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

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

2006-12-19

arxiv.org/abs/quant-ph/0612161v1

Physics

Quantum Physics

to appear in Phys. Rev. A

Scientific paper

A simple scheme is presented to generate n-qubit W state with rf-superconducting quantum interference devices (rf-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 position inaccuracy of the rf-SQUIDs. The numerical simulation shows that, by using present experimental techniques, we can achieve our scheme with very high success probability, and the fidelity could be eventually unity with the help of dissipation.

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