JP6706838B2 - Spin wave circuit and address encoder and address decoder - Google Patents

Description

The present invention relates to a spin wave circuit using phase interference of spin waves, and an address encoder and an address decoder using the spin wave circuit.

Spin waves are a phenomenon in which the precession motion of the magnetic properties (spins) of electrons inside a magnetic body propagates, and it is known that spin waves called magnons flow as spin currents in insulators. Moreover, since the spin current does not accompany the movement of electric charges, there is no heat generation or energy loss due to Joule heat, and it is expected to be applied to electronic devices.

In the meantime, electronic devices are required to increase the data storage capacity as well as the calculation speed and the communication speed with the explosive increase in the amount of information in recent years. Miniaturization is rapidly developing. However, in order to improve the processing speed, firstly, there is a problem of heat generation due to performance improvement due to miniaturization approaching a physical limit, and secondly, slowing down of development speed of data communication speed (Latency) between CPU and memory. Had the problem of. For example, in a group of sensors (so-called artificial skin) that can detect the same level of sensation as humans, the number of transistors will be enormous and the control unit will be large and communication will be required at the same time if access is possible with conventional electronic devices. Cause delays. In addition, a high-resolution three-dimensional display in the medical field or entertainment field can be viewed by a plurality of people at the same time by enlarging the viewing angle (ensuring about 45 degrees). After all, the number of transistors becomes huge. Therefore, communication delay and heat generation in the wiring cannot be ignored, and there is concern that the wiring may be burnt out or unstable operation may occur due to heat generation.

In such a situation where a large number of devices are indispensable, due to the rapid increase in the degree of integration, a random access system using CMOS is a bottleneck for the entire application in terms of both speed and miniaturization. I have no choice but to say that

Some address decoders change the decoding method to the element according to the address to be accessed and facilitate a series of element reading even by using a simple DMA (Direct Memory Access) function (see Patent Document 1). ..

On the other hand, as a circuit using an annular transmission line, what is called a rat race circuit has been proposed (see Non-Patent Documents 1 and 2). This technique has a configuration in which a 1/4 wavelength transmission line and a 3/4 wavelength transmission line are radially connected to an annular transmission line, and is a circuit for branching or demultiplexing a high-frequency signal.

JP, 2002-215565, A

Xu He-Xiu, Wang Guang-Ming and Lu Ke, “Microstrip Rat-Race Couplers”, Microwave Magazine, IEEE,12,4, 117-129 (2011). S. Rodriguez, A. Fajardo and CIPaez, “Characterization of the branch-line and rat-race ideal hybrids through their merit parameters”, Circuits and Systems (LASCAS), 2011 IEEE Second Latin American Symposium on, 1-4, ( 2011/23-25 Feb. 2011).

The technique disclosed in the above-mentioned Patent Document 1 realizes the function of the address decoder by arranging a plurality of CMOS logic gates in a matrix. However, recently, due to the rapid increase in the number of access destinations (memory, pixels, sensors, etc.), the number of address decoders (that is, the occupied area) increases, and it is difficult to reduce the size of the entire chip. Was. In addition, since the wiring length becomes long, the possibility of signal transmission delay cannot be ignored, and there is a concern that there is a limit to the speedup, such as a clock shift.

On the other hand, the rat race circuit is a circuit for branching or shunting a high-frequency signal as it is and is used exclusively for transmission/reception in an antenna, and since the propagating wavelength is as long as several cm, it is made into a chip. It has been considered impossible to do in principle. Therefore, it was not suitable for application to electronic devices.

The present invention has been made in consideration of the above points, and an object thereof is to propose a circuit that enables miniaturization while solving the problems of heat generation and energy loss by utilizing spin waves. And to provide an address encoder and an address decoder.

As a result of earnest research, the present inventors have found that spin waves propagating in a magnetic oxide cause only phase interference of signals having the same phase in an annular waveguide, and by utilizing this property, data conversion is performed. The conclusion was reached that the present invention was completed.

That is, the present invention related to a spin wave circuit is a spin wave circuit that utilizes phase interference of spin waves, and the spin wave waveguide is connected to the spin wave interference portion in which the spin wave waveguide is formed in an annular shape, and the spin wave waveguide. At least one input section formed by a linear spin wave waveguide, and at least one output section formed by a linear spin wave waveguide connected to the spin wave waveguide at an appropriate interval from the input section And a reference spin wave introduction part formed by a linear spin wave waveguide connected to the spin wave interference part and having an appropriate distance from the input part and the output part, and a reference spin with a predetermined phase. A wave is introduced from the reference spin wave introduction part, and when the spin wave input from the input part has the same phase as the reference spin wave, phase interference is caused in the spin wave interference part, and the phase interference is caused. A spin wave is output from the output.

According to the above configuration, the spin wave interference unit causes phase interference with the reference spin wave having a predetermined fixed phase only when the spin waves input from the input unit have the same phase. The data can be converted by detecting a spin wave having a specific phase. Therefore, it can function as an encoder that encodes the input data, and can function as a decoder that converts the encoded data into the decoded data. By changing the phase of the reference spin wave introduced from the reference spin wave introducing unit, it is possible in principle to convert various input data input from all the input units.

In the invention related to the spin wave circuit, the input section and the reference spin wave introducing section circumscribe each of the annular spin wave interference sections, and the input or introduced spin waves are respectively the annular spin wave interference section. Is formed by a spin wave waveguide extending outward so as to propagate in a predetermined direction in the circumferential direction, the output unit is circumscribed to the annular spin wave interference unit, and from the input unit A configuration may be employed in which the input spin wave is formed by a spin waveguide that extends in a direction in which the input spin wave propagates in a predetermined direction in the annular spin wave interference portion.

In the case of the above configuration, the spin waves propagated from the input section and the reference spin wave introduction section and input or introduced into the spin wave interference section propagate in a predetermined circumferential direction in the ring of the spin wave interference section. It will be. On the other hand, since the output section is provided so as to extend in the propagation direction, the spin wave propagating in the spin wave interference section is demultiplexed and can be easily propagated to the output section.

The invention relating to the spin wave circuit may be configured such that the spin wave interference section, the input section, the output section, and the reference spin wave introducing section are all integrally formed by a magnetic garnet.

The magnetic garnet, yttrium iron garnet _{(YIG: Y 3 Fe 5 O} 12) is a magnetic oxide insulating. Spin waves, which are called magnons in insulators, enable extremely long transmission when the precession motion of the magnetic properties of electrons propagates. Therefore, transmission from the input unit to the output unit via the spin wave interference unit becomes possible. Also, spin waves can be excited by applying microwaves and magnetic fields to the magnetic garnet, and by forming each part integrally with the same magnetic garnet, the spin waves excited by the above method can be used as they are. You can

The present invention according to an address encoder uses any one of the inventions related to the spin wave circuit, wherein the input unit is an input unit for inputting a plurality of spin waves of different phases corresponding to the number of input data. Yes, the output unit is a single output unit, the reference spin wave introduction unit comprises a spin wave phase modulation means, by sequentially introducing a plurality of phase-modulated reference spin waves to the spin wave interference unit. It is characterized by becoming.

According to the above configuration, the phase of the reference spin wave is modulated with respect to a plurality of input data, and the phase interference is sequentially performed in the spin wave interference unit, whereby the spin wave that causes the phase interference from the input spin wave is specified. However, the coding can be performed depending on whether or not the spin wave of the particular phase is output. Therefore, even if a plurality of spin waves are input at the same time, only the input of the spin waves of a specific phase is detected, and the function as an address encoder can be achieved.

Further, the present invention relating to an address encoder uses the reference spin wave introducing unit according to any one of the present invention relating to the spin wave circuit as a reference spin wave output unit, wherein the input unit corresponds to the number of input data. Is an input unit for inputting spin waves of different phases, the output unit is a single output unit, and the output unit has a position between the spin waves output from the reference spin wave output unit. The reference spin wave output section outputs all the input spin waves by changing the intensity of the spin waves input from the input section, and outputs the output spin waves. It is characterized in that a phase difference is detected between a spin wave having a high intensity detected in the section and a plurality of spin waves detected in the reference spin wave output section.

According to the above configuration, the plurality of spin waves having different phases input from the input unit are output from the output unit and the reference spin wave output unit without phase interference in the spin wave interference unit, and any one of the input units By increasing the intensity of the spin wave input from, the input of the spin wave can be detected at the output unit. The output unit can detect that a spin wave having a small intensity is not input by inputting it by detecting a spin wave having a predetermined intensity or more. At this time, the reference spin wave output unit outputs all the spin waves and detects the phase difference between the spin waves having high intensity detected by the output unit, so that the coding by the spin waves with the specific phase is performed. It will be possible. Even in the above configuration, even if the spin waves are simultaneously input from the plurality of input units, only the spin waves of a specific phase can be output, so that the address encoder can function.

Further, another invention related to the address decoder uses any one of the inventions related to the spin wave circuit, wherein the input unit is a single input unit, and the output unit corresponds to the number of decoded data. A plurality of corresponding output units, in which the spin wave of the fixed phase is input from the reference spin wave introducing unit, and the spin wave of the same phase as the reference spin wave is input from the input unit with an arbitrary phase difference. It is characterized by being a thing.

According to the above configuration, the spin waves having the same phase with respect to the fixed phase of the reference spin wave are input at an arbitrary phase difference, whereby the spin wave interference unit causes phase interference at the same phase. At this time, the timing at which the spin wave input with the phase difference interferes with the reference spin wave due to the same phase is different from the detected output part among the plurality of output parts because it differs depending on the phase difference. There is an output section, and decoding can be performed depending on the state of detection by the output section. The encoded data is the phase difference between spin waves of the same phase, and the decoded data is the presence or absence of phase interference for each output unit.

The plurality of output sections in both the inventions related to the address decoder may be formed at equal intervals to each other.

In the above configuration, when a plurality of output sections are formed, the output state of the spin waves that have been phase-interfered with each other differs depending on the extension position of the output section, so by providing this output section stepwise at equal intervals, The spin wave having the phase interference can be output by any of the output units.

According to the present invention, since the spin wave transmitted in the circuit does not accompany the movement of charges, the problems of heat generation and energy loss can be solved. Further, the wavelength of the spin wave is as short as several nm to several hundreds nm, and the device size can be made small to several nm to several hundreds nm. Further, spin waves having different phases do not interfere with each other, and spin waves having different wavelengths do not interfere with each other, so that signals can be transmitted simultaneously in time. Then, since phase interference in the same phase is used, multiplexing becomes possible, and as a result, information that can be accessed at one time increases, and the problem of signal transmission delay can be solved. The address encoder and address decoder based on such a principle are small in size and eliminate transmission delay.

It is explanatory drawing which shows the 1st Embodiment of this invention. It is explanatory drawing which shows the 2nd Embodiment of this invention. It is explanatory drawing which shows the 2nd Embodiment of this invention. It is explanatory drawing which shows the outline of the address decoder used for experiment. It is a graph which shows the relationship between time and the intensity of spin waves from an experimental result.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a first embodiment of the invention relating to a spin wave circuit, which is to function as an address decoder. In the present embodiment, as shown in FIG. 1, one spin wave interference unit 1, an input unit 2 and an output unit 3 (3a... 3f) extending from this spin wave interference unit 1, and And a reference spin wave introduction section 4 extending from the spin wave interference section 1. These are all magnetic garnet (yttrium iron garnet _{(YIG: Y 3 Fe 5 O} 12)) is formed by, is provided as a waveguide spin waves can propagate. The regions other than these are non-magnetic materials. The figure is a plan view and shows only the shape of the surface portion of the spin wave waveguide. Therefore, it is formed with a predetermined wall thickness in the height direction (direction perpendicular to the paper surface in the figure). Here, the widths of the respective parts are illustrated as being in the same state, but this is for convenience of description or for convenience of manufacturing an experimental circuit described later, and the width of the input part 2 is larger than that of the output part 3. May be formed wide, and the spin wave interference portion 1 may be formed wide.

The spin wave interference section 1 is composed of an annular spin wave waveguide, and the input section 2 is circumscribed by the ring of the spin wave interference section 1 and linearly extends outward to be connected. ing. That is, the input section 2 is provided tangentially from the outer circumference of the spin wave interference section 1. Therefore, when the spin wave is input (propagated) from the input unit 2, the spin wave propagates in the circumferential direction (counterclockwise in the figure) along the annular shape of the spin wave interferometer 1.

A reference spin wave introducing section 4 for inputting a reference spin wave is formed at a position close to the input section 2. Like the input unit 2, the reference spin wave introducing unit 4 also extends outward while being circumscribed by the ring of the spin wave interference unit 1. Therefore, like the spin wave input from the input unit 2, the reference spin wave introduced into the spin wave interference unit 1 also propagates in the circumferential direction (counterclockwise in the figure) along the ring.

Here, the two spin waves propagated to the spin wave interference unit 1 (the spin wave input from the input unit 2 and the spin wave introduced from the reference spin wave introducing unit 4) have the same wavelength and the same phase, Providing a phase difference between the two causes phase interference only in the same phase. That is, they do not interfere when the wavelengths or phases are different. Therefore, when the wavelength and the phase of the spin waves input from the input unit 2 and the reference spin wave introducing unit 4 are made constant, the occurrence state of the phase interference is determined only by the phase difference.

On the other hand, the output section 3 (3a to 3f) is formed in a straight line extending in the tangential direction with respect to the annular waveguide forming the spin wave interference section 1, and the spin propagating through the spin wave interference section 1 is formed. It is output by demultiplexing the wave. In order to facilitate this demultiplexing, the extending direction of the output unit 3 is provided in a tangential direction (rightward oblique direction in the drawing) toward the traveling direction of the spin wave propagating in the spin wave interference unit 1. Further, the plurality of output units 3a to 3f are provided at appropriate intervals, and when a predetermined phase difference is provided between the spin wave input from the input unit 2 and the reference spin wave, the positions are in the same phase. This is to output a spin wave with phase interference.

With the above configuration, when the phase of the reference spin wave is fixed and the spin wave having the same phase as this has a phase difference and is input from the input unit 2, phase interference occurs at a position where the reference spin wave has the same phase. And the spin wave amplified by the phase interference is detected by any of the output units 3. By assigning "0" or "1" depending on the presence or absence of detection of the spin wave amplified in the order of the plurality of output units 3a to 3f, it can be used as output data. That is, the input side is the phase difference of the input spin waves, and the output data corresponding to the number of the output units 3 can be formed by changing the phase difference. This allows it to function as an address decoder. That is, the encoded data is divided by the phase difference, and the decoded data can be obtained according to the detection result of the output unit 3.

Since the spin wave introduced from the reference spin wave introduction unit 4 is introduced into the spin wave interference unit in a predetermined phase, if the spin waves input from the input unit 2 have the same phase, It causes phase interference. Therefore, it is assumed that the reference spin wave is modulated and introduced by providing the phase modulator 5, and the reference spin waves of different phases are sequentially introduced to be introduced between the reference spin wave and the spin wave input from the input unit 2. By inducing a state where phase interference may occur, it is possible to decode from encoded data of another type.

Next, an embodiment of a spin wave circuit that can function as an address encoder will be described. The outline is shown in FIG. As shown in this figure, the basic configuration is similar to that of the embodiment that functions as an address decoder, but the input unit 2 is a plurality of 2a to 2f, and the output unit 3 is single. Further, the reference spin wave introduction unit in the address decoder is used as the output side and is used as the reference spin wave output unit 6. The address decoder having such a configuration inputs/outputs in the opposite direction to the case of being configured as the address encoder described above, receives spin waves of different phases from the plurality of input units 2a to 2f, and outputs a single output. The part 3 detects the input spin wave. At this time, the input sections 2a to 2f are input with spin waves of a specific phase, and by inputting with different intensities, the output section can regard the spin waves with high intensity as inputs.

Here, since a plurality of input units 2 (six in the figure) are provided, when the spin waves input from the input units 2a to 2f are all in the same phase, the spin wave interfering unit 1 performs mutual input. Will cause phase interference. Therefore, in the case of the present embodiment, spin waves having mutually different phases are input from the respective input units 2a to 2f. In this case, although not shown, a phase modulator is provided on the upstream side of each of the input units 2a to 2f to modulate the spin wave input from each of the input units 2a to 2f into a specific phase, The input may be configured to be input to the spin wave interference unit 1.

The reference spin wave output unit 4 outputs all the input spin waves, and the spin waves with high intensity detected at the output unit are referred to in order to detect the phase difference. Although not shown, the output section is provided with a detection section for detecting the phase difference. In this way, when a plurality of spin waves of different phases are input, the output of the input spin wave of a specific phase is detected to convert each phase into a value of "1" or "0". You can

Next, a second embodiment of a spin wave circuit that can function as an address encoder will be described. The outline is shown in FIG. As shown in this figure, the basic configuration is similar to that of the embodiment that functions as an address decoder, but the input unit 2 is a plurality of 2a to 2f, and the output unit 3 is single. The state of connection between the spin wave interference unit 1 and the input unit 2 and the output unit 3 is the same as that described above.

In the present embodiment as well, since there are a plurality of input units 2, spin waves having mutually different phases are input from the respective input units 2a to 2f. Therefore, also in the present embodiment, a phase modulator is provided on the upstream side of each of the input units 2a to 2f to modulate the spin wave input from each of the input units 2a to 2f to a specific phase, and It may be configured so that it is input to the wave interference unit 1.

On the other hand, the reference spin wave introduced from the reference spin wave introducing unit 4 is previously modulated by the phase modulator 5, and is modulated into a spin wave having at least the same phase as the phase of the spin wave input from each of the input units 2a to 2f. After that, the spin wave interference unit 1 is introduced. Note that the reference spin wave input from the reference spin wave introducing unit 4 has a constant phase difference from the spin waves input from the input units 2a to 2f, and a single spin wave having any type of phase is used. The one output section 3 is configured to output the phase interference.

With the above configuration, the input data is a spin wave having a specific phase (that is, a spin wave input from a specific input section), and the output data is phase-modulated in the modulation order of the reference spin wave that is sequentially modulated and introduced. The data is aligned with "1" and "0" depending on whether or not a spin wave is detected. Thus, since the different inputs are coded, it can function as an address encoder. It should be noted that although the number of input units 2 is six in the case illustrated in FIG. 3, a large number of input units 2 can be formed by making the intervals close.

We experimented whether the spin wave circuit described above functions as an address decoder. The outline of the spin wave circuit used as an experimental example is shown in FIG. In the experimental example, the number of output units is three (o1, o2, o3). The structure of each waveguide is formed by etching a magnetic garnet (yttrium iron garnet) into the illustrated shape. In the drawings showing the examples, p1 indicates a reference spin wave introducing unit, p2 indicates an input unit, and o1 to o3 are first to third output units. The film thickness of all the waveguides is 0.1 μm, and the dimensions of the respective constituent parts in the plan view shown in the figure are as shown in the table below.

Using the experimental circuit having the above-described configuration, a spin wave having a fixed phase is introduced from the reference spin wave introduction part p1, and the spin wave input from the input part p2 has a phase difference of 0 with respect to the reference spin wave. The output values at the output parts o1, o2, and o3 were measured in the case of °, 135°, and 225°. The spin wave was excited by arranging an antenna connected to the oscillator orthogonal to the waveguide on the input side and applying a microwave. A phase modulator was used to change the phase of the spin wave input from the input section. Further, in order to detect the spin wave on the output side, an antenna was arranged orthogonal to the waveguide on the output side, and this was connected to an oscilloscope for detection. The result is shown in FIG. In each of FIG. 5, the horizontal axis represents time (Phase) and the vertical axis represents the intensity of the spin wave, and (a) shows (b) when the phase difference of the input spin wave is 0°. ) Indicates a case of 135°, and (c) indicates a case of 225°.

As is clear from the above experimental results, when the phase difference is 0°, the intensity of the spin wave at the third output portion o3 increases as compared with the values at the first and second output portions o1 and o2. ing. Further, when the phase difference is 135°, only the value at the second output portion o2 increases, and when the phase difference is 225°, only the value at the first output portion o1 increases.

Then, in the figure, the broken line indicates the intensity of the spin wave that should be the threshold value. If this value is used as a threshold value and converted into digital signals of "1" and "0", the truth as shown in Table 2 below is obtained. It becomes a value.

From the above results, it was found that the intensity of the spin wave detected at the output section was adjusted by the phase difference of the input spin wave. According to the above experimental example, it was also found that it could function as a 3-output address decoder.

The above experiment confirmed whether it can function as an address decoder, but it is clear from the above experiment results that the phase interference in the spin wave interference part occurs only in the case of the same phase. Even in the case of configuring the address decoder, even if a plurality of spin waves having different phases are simultaneously input, phase interference does not occur unless the spin waves have the same phase. Therefore, by changing the phase of the spin wave introduced from the reference spin wave introducing unit while inputting a plurality of spin waves, it is possible to output the spin wave of a specific phase and also function as an address encoder. found.

As described above, the present invention enables encoding and decoding by causing phase interference of spin waves, and can be used as an address encoder or address decoder. For example, in the case of so-called artificial skin that senses the sensation of a human hand, when applied to the entire human skin, 100×10 ²³ cells are evenly distributed over an area of 2 m ² of the entire human skin. Assuming that, the total number of skins will exceed 10 ¹⁰ . If one transistor is made to correspond to one cell and it is attempted to monitor all of them at the same time, the total number of transistors becomes enormous, and as a result, downsizing of the control unit becomes difficult and delay is increased. Therefore, when the spin wave circuit of the present invention is used, it is possible to simultaneously perform input/output with a single circuit by increasing the number of input units or output units, and therefore it is possible to reduce the size of the circuit and delay Can also be suppressed.

In addition, when using a high-resolution 3D display, which is drawing attention in the medical field and entertainment field, with a viewing angle of about 45 degrees so that it can be viewed by multiple people at the same time, the pixel size is about 500 nm, which is 1 x 1 m. only to be realized the ^second display, the number of pixels exceeds 10 ^12, which also number of transistors becomes enormous. As a result, delay in access to the pixel by the transistor and heat generation in the wiring cannot be ignored, and this may lead to burnout of the wiring or unstable operation due to heat generation of the device. Therefore, when the spin wave circuit of the present invention is used, it is possible to suppress the occurrence of unstable operation due to access delay and heat generation.

1 spin wave interference part 2 (2a-2f), p2 input part 3 (3a-3f), o1, o2, o3 output part 4, p1 reference spin wave introduction part 5 phase modulator 6 reference spin wave output part

Claims (7)

A spin wave circuit utilizing phase interference of spin waves,
A spin wave interference part in which the spin wave waveguide is formed in an annular shape,
At least one input section formed by a linear spin wave waveguide connected to the spin wave waveguide;
At least one output part formed by a linear spin wave waveguide connected to the spin wave waveguide at a suitable distance from the input part;
A reference spin wave introducing portion formed by a linear spin wave waveguide connected to the spin wave interference portion, having an appropriate distance from the input portion and the output portion,
A reference spin wave having a predetermined phase is introduced from the reference spin wave introduction unit, and phase interference is caused in the spin wave interference unit when the spin wave input from the input unit has the same phase as the reference spin wave. A spin wave circuit, wherein the spin wave having the phase interference is output from the output section .
The input unit and the reference spin wave introduction unit are circumscribed to the annular spin wave interference unit, respectively, and the input or introduced spin waves propagate in a predetermined direction in the circumferential direction of the annular spin wave interference unit. Is formed by a spin wave waveguide extending outward so that the output section is circumscribed to the annular spin wave interference section, and the spin wave input from the input section is the annular shape. The spin wave circuit according to claim 1, wherein the spin wave interference portion is formed by a spin waveguide extending in a direction of propagating in a predetermined direction. The spin wave circuit according to claim 1, wherein the spin wave interference unit, the input unit, the output unit, and the reference spin wave introducing unit are all integrally formed of magnetic garnet. An address encoder using the spin wave circuit according to any one of claims 1 to 3, wherein the input unit is an input unit for inputting a plurality of spin waves having different phases corresponding to the number of input data, The output section is a single output section, the reference spin wave introducing section is provided with spin wave phase modulation means, and a plurality of phase-modulated reference spin waves are sequentially introduced into the spin wave interference section. Characteristic address encoder. It is an address encoder which uses the reference spin wave introductory part in the spin wave circuit in any one of Claims 1 thru|or 3 as a reference spin wave output part, Comprising: The said input part has the number of different phases equivalent to the number of input data. An input unit for inputting a spin wave of the reference spin wave, the output unit is a single output unit, and the output unit detects a phase difference from the spin wave output from the reference spin wave output unit. The reference spin wave output section outputs a whole of the input spin waves by changing the intensity of the spin waves input from the input section and inputting the detected spin waves. An address encoder characterized by detecting a phase difference between a high intensity spin wave and a plurality of spin waves detected in a reference spin wave output section. An address decoder using the spin wave circuit according to claim 1, wherein the input unit is a single input unit, and the output unit is a plurality of output units corresponding to the number of decoded data. In addition, a spin wave having a fixed phase is input from the reference spin wave introducing unit, and a spin wave having the same phase as the reference spin wave is input from the input unit with an arbitrary phase difference. Address decoder. 7. The address decoder according to claim 6, wherein the plurality of output units are formed at equal intervals.

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