Electron spin wave multiplexing device

An electron spin wave multiplexing device comprising:

• a receiving unit that includes a first solid-state device having a semiconductor quantum well structure, and receives a multiplexed electron spin wave by synthesizing multiple electron spin waves;
• a modulation unit that includes a second solid-state device having a semiconductor quantum well structure and connected to the receiving unit, and modulates the multiplexed electron spin wave from the receiving unit;
• and
• a recording unit that includes a third solid-state device having a semiconductor quantum well structure and connected to the modulation unit, receives the multiplexed electron spin wave passed through the modulation unit, and includes multiple recording magnetic materials that record information contained in the multiplexed electron spin wave in a nonvolatile manner, wherein
• the modulation unit is a modulation unit that has a function of controlling at least one of an amplitude, a phase, and a polarization degree of freedom of the multiple electron spin waves by utilizing a persistent spin helix state in crystal orientation dependence of an effective magnetic field due to a spin-orbit interaction generated in a semiconductor quantum well structure.