Nonadiabatic geometric quantum computation

Journal Article · Mon Oct 15 00:00:00 EDT 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.76.044303· OSTI ID:21020847

Wang, Z S; Chunfeng, Wu; Xunli, Feng; Lai, C H; Oh, C H ^[1]; Kwek, L C ^[1]; Vedral, V ^[2]

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1. Department of Physics, National University of Singapore, 2 Science Drive 3, 117542 (Singapore)
2. School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT (United Kingdom)

A different way to realize nonadiabatic geometric quantum computation is proposed by varying parameters in the Hamiltonian for nuclear-magnetic resonance, where the dynamical and geometric phases are implemented separately without the usual operational process. Therefore the phase accumulated in the geometric gate is a pure geometric phase for any input state. In comparison with the conventional geometric gates by rotating operations, our approach simplifies experimental implementations making them robust to certain experimental errors. In contrast to the unconventional geometric gates, our approach distinguishes the total and geometric phases and offers a wide choice of the relations between the dynamical and geometric phases.

• OSTI ID: 21020847
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 4 Vol. 76; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMPARATIVE EVALUATIONS
HAMILTONIANS
NUCLEAR MAGNETIC RESONANCE
QUANTUM COMPUTERS
QUANTUM MECHANICS