US 12,347,506 B2
Photonic spin register, information writing method, and information read-out method
Satoru Nakatsuji, Tokyo (JP); Junji Yumoto, Tokyo (JP); Ryo Shimano, Tokyo (JP); Masamitsu Hayashi, Tokyo (JP); Mitsuru Takenaka, Tokyo (JP); and Yusuke Horinouchi, Tokyo (JP)
Assigned to The University of Tokyo, Tokyo (JP)
Filed by The University of Tokyo, Tokyo (JP)
Filed on Jul. 19, 2023, as Appl. No. 18/223,970.
Application 18/223,970 is a continuation in part of application No. PCT/JP2022/002068, filed on Jan. 20, 2022.
Claims priority of provisional application 63/139,368, filed on Jan. 20, 2021.
Prior Publication US 2023/0368854 A1, Nov. 16, 2023
Int. Cl. H10B 61/00 (2023.01); G11C 11/16 (2006.01); G11C 13/04 (2006.01); G11C 19/08 (2006.01); H01F 10/32 (2006.01); H10N 50/10 (2023.01); H10N 50/80 (2023.01)
CPC G11C 19/0841 (2013.01) [G11C 11/161 (2013.01); G11C 11/1673 (2013.01); G11C 11/1675 (2013.01); G11C 13/047 (2013.01); H10B 61/00 (2023.02); H01F 10/3254 (2013.01); H01F 10/3268 (2013.01); H10N 50/10 (2023.02); H10N 50/80 (2023.02)] 21 Claims
OG exemplary drawing
 
1. A photonic spin register, comprising:
a shift register unit including a magnetic material layer having a shape extending in one direction; and
a write unit configured to write spin information into a magnetic domain in the magnetic material layer by transferring information included in an optical signal that is a pulse amplitude-modulated and serial input signal, to a spin state of the magnetic domain in the magnetic material layer by means of a photocurrent corresponding to the optical signal or by irradiation with the optical signal, wherein
when a shift current flows through the shift register unit in the one direction, a domain wall is configured to move in the magnetic material layer, thereby allowing the spin information to move and be buffered in the magnetic material layer.