Quantum-information processing and multiatom-entanglement engineering with a thermal cavity

Journal Article · Sun Dec 01 00:00:00 EST 2002 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.66.060303· OSTI ID:20632388

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 with atoms in a thermal cavity. The photon-number-dependent parts in the evolution operator are canceled with the assistant of a strong classical field. Thus the scheme is insensitive to the thermal field. In the scheme the detuning between the atoms and the cavity is equal to the atom-cavity coupling strength and thus the gates operate at a high speed, which is also important in view of decoherence. The scheme can be generalized to generate multiatom-entangled states with a thermal cavity.

• OSTI ID: 20632388
• Journal Information: Physical Review. A, Vol. 66, Issue 6; Other Information: DOI: 10.1103/PhysRevA.66.060303; (c) 2002 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
CORRELATIONS
COUPLING
DATA PROCESSING
ENERGY LEVELS
EVOLUTION
INFORMATION THEORY
PHOTONS
QUANTUM ELECTRODYNAMICS
QUANTUM MECHANICS
VELOCITY