Journal
PHYSICAL REVIEW B
Volume 82, Issue 19, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.82.195305
Keywords
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Funding
- Ministry of Education, Culture, Sports, Science and Technology of Japan [20940011, 19019004, 19048008, 19048015, 21244053, 22740196]
- Japan Science and Technology Agency
- JSPS
- Funding Program for World-Leading Innovative RD on Science and Technology (FIRST Program)
- Grants-in-Aid for Scientific Research [22740196, 19019004] Funding Source: KAKEN
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We propose purely electric manipulation of spin qubits by means of the spin-orbit interaction (SOI) without magnetic field or magnets in a double quantum dot. All the unitary transformations can be constructed by the time-dependent Dzyaloshinsky-Moriya interaction between the two spins, which arises from the Rashba SOI modulated by electric field. As a few demonstrations, we study both analytically and numerically the three operations, i.e., (A) the spin initialization, (B) the two-spin rotation in the opposite directions, and (C) the two-spin rotation in the same direction. The effects of the relaxation and the feasibility of this proposal are also discussed.
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