Unconventional geometric quantum phase gates with a cavity QED system

Journal Article · Sun Oct 31 23:00:00 EST 2004 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.70.052320· OSTI ID:20646196

Shibiao, Zheng ^[1]

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1. Department of Electronic Science and Applied Physics, Fuzhou University, Fuzhou 350002 (China)

We propose a scheme for realizing two-qubit quantum phase gates via an unconventional geometric phase shift with atoms in a cavity. In the scheme the atoms interact simultaneously with a highly detuned cavity mode and a classical field. The atoms undergo no transitions during the gate operation, while the cavity mode is displaced along a circle in the phase space, aquiring a geometric phase conditional upon the atomic state. Under certain conditions, the atoms are disentangled with the cavity mode and thus the gate is insensitive to both the atomic spontaneous emission and the cavity decay.

• OSTI ID: 20646196
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 70; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
CORRELATIONS
DECAY
EMISSION
ENERGY LEVELS
INFORMATION THEORY
OPERATION
OPTICS
PHASE SHIFT
PHASE SPACE
QUANTUM ELECTRODYNAMICS
QUANTUM MECHANICS