Generation of N-qubit W states with rf SQUID qubits by adiabatic passage

Journal Article · Fri Dec 15 00:00:00 EST 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.74.064303· OSTI ID:20976577

Deng, Z J ^[1]; Gao, K L; Feng, M ^[1]

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1. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, and Centre for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 430071 (China)

A simple scheme is presented to generate N-qubit W states with rf superconducting quantum interference devices (SQUIDs) in cavity QED through adiabatic passage. Because of the achievable strong coupling for rf SQUID qubits embedded in cavity QED, we can get the desired state with high success probability. Furthermore, the scheme is insensitive to the position inaccuracy of the rf SQUID. Numerical simulation shows that, by using present experimental techniques, we can achieve our scheme with very high success probability, and the fidelity could eventually be unity with the help of dissipation.

• OSTI ID: 20976577
• Journal Information: Physical Review. A, Vol. 74, Issue 6; Other Information: DOI: 10.1103/PhysRevA.74.064303; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ADIABATIC PROCESSES
NUMERICAL ANALYSIS
PROBABILITY
QUANTUM COMPUTERS
QUANTUM ELECTRODYNAMICS
QUANTUM MECHANICS
QUBITS
SIMULATION
SQUID DEVICES
STRONG-COUPLING MODEL