Experimental implementation of high-fidelity unconventional geometric quantum gates using an NMR interferometer

Journal Article · Tue Aug 15 04:00:00 EDT 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.74.020302· OSTI ID:20853004

Jiangfeng, Du ^[1]; Ping, Zou ^[1]; Wang, Z D ^[2]

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1. Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China)
2. Department of Physics and Center of Theoretical and Computational Physics, University of Hong Kong, Pokfulam Road, Hong Kong (China)

Following a key idea of unconventional geometric quantum computation developed earlier [S. L. Zhu and Z. D. Wang, Phys. Rev. Lett. 91, 187902 (2003)], here we propose a more general scheme in such an intriguing way: {gamma}{sub d}={alpha}{sub g}+{eta}{gamma}{sub g}, where {gamma}{sub d} and {gamma}{sub g} are respectively the dynamic and geometric phases accumulated in the quantum gate operation, with {eta} as a constant and {alpha}{sub g} being dependent only on the geometric feature of the operation. More interestingly, we demonstrate an experiment to implement a universal set of such kind of generalized unconventional geometric quantum gates with high fidelity in an NMR system.

• OSTI ID: 20853004
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 2 Vol. 74; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
GATING CIRCUITS
IMPLEMENTATION
INTERFEROMETERS
NUCLEAR MAGNETIC RESONANCE
OPERATION
QUANTUM COMPUTERS
QUANTUM MECHANICS