An ultra-fast C-NOT gate based on electric dipole  coupling between nitrogen-vacancy color centers

doi:10.52396/JUST-2020-0039

Journal of University of Science and Technology of China ›› 2021, Vol. 51 ›› Issue (3): 185-192.DOI: 10.52396/JUST-2020-0039

• Research Articles:Physics • Previous Articles Next Articles

An ultra-fast C-NOT gate based on electric dipole coupling between nitrogen-vacancy color centers

Shi Shunyang^1,2,3,4, Ji Wentao^1,2,3,4, Wang Ya^1,2,3,4*, Du Jiangfeng^1,2,3,4*

1. Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China;
2. Hefei National Laboratory for Physical Sciences at the Microscale, Hefei 230026, China;
3. CAS Key Laboratory of Microscale Magnetic Resonance, University of Science and Technology of China, Hefei 230026, China;
4. Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China

Received:2021-01-12 Revised:2021-03-05 Online:2021-03-31 Published:2021-11-16
Contact: *E-mail: ywustc@ustc.edu.cn; djf@ustc.edu.cn

Abstract

Abstract: Our research proposes a new scheme to build a controlled-NOT(C-NOT) gate between two adjacent nitrogen-vacancy (NV) color centers in diamond, using electric dipole coupling between adjacent NVs and selective resonant laser excitation.The electric dipole coupling between two NVs causes the state dependent energy shift.This allows to apply resonant laser excitation to realize the C-phase gate.Combined with a single qubit operation, C-NOT gate can be implemented quickly.Between two adjacent 10 nm NVs, the C-NOT gate can operate up to 120 ns faster than the traditional magnetic dipole coupling method by 2 magnitudes.In order to reduce the effect of a spontaneous emission,we propose to use a non-resonant cavity to suppress the spontaneous emission.The simulation results show that the C-phase gate fidelity can reach 98.88%.Finally, the scheme is extended to a one-dimensional NV spin chain.

Key words: nitrogen-vacancy color center, quantum computing, C-NOT gate, 1D-spin chain

CLC Number:

O413

SHI Shunyang, JI Wentao, WANG Ya, DU Jiangfeng. An ultra-fast C-NOT gate based on electric dipole coupling between nitrogen-vacancy color centers[J]. Journal of University of Science and Technology of China, 2021, 51(3): 185-192.

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An ultra-fast C-NOT gate based on electric dipole coupling between nitrogen-vacancy color centers

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