Possible realization of entanglement, logical gates, and quantum-information transfer with superconducting-quantum-interference-device qubits in cavity QED

Journal Article · Tue Apr 01 00:00:00 EST 2003 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.67.042311· OSTI ID:20633956

Yang, C -P; Chu, S -I; Siyuan, Han ^[1]

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1. Department of Chemistry, University of Kansas, Lawrence, Kansas 66045 (United States)

We present a scheme to achieve maximally entangled states, controlled phase-shift gate, and SWAP gate for two superconducting-quantum-interference-device (SQUID) qubits, by placing SQUIDs in a microwave cavity. We also show how to transfer quantum information from one SQUID qubit to another. In this scheme, no transfer of quantum information between the SQUIDs and the cavity is required, the cavity field is only virtually excited and thus the requirement on the quality factor of the cavity is greatly relaxed.

• OSTI ID: 20633956
• Journal Information: Physical Review. A, Vol. 67, Issue 4; Other Information: DOI: 10.1103/PhysRevA.67.042311; (c) 2003 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
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
GATING CIRCUITS
INFORMATION THEORY
OPTICS
PHASE SHIFT
QUALITY FACTOR
QUANTUM ELECTRODYNAMICS
QUANTUM MECHANICS
SQUID DEVICES