Decoherence control in microwave cavities

Details Decoherence control in microwave cavities Decoherence control in microwave cavities

2002-11-18

arxiv.org/abs/quant-ph/0211101v1

Phys. Rev. A 67, 052101 (2003)

Physics

Quantum Physics

13 pages, RevTeX, 8 figures

Scientific paper

10.1103/PhysRevA.67.052101

We present a scheme able to protect the quantum states of a cavity mode against the decohering effects of photon loss. The scheme preserves quantum states with a definite parity, and improves previous proposals for decoherence control in cavities. It is implemented by sending single atoms, one by one, through the cavity. The atomic state gets first correlated to the photon number parity. The wrong parity results in an atom in the upper state. The atom in this state is then used to inject a photon in the mode via adiabatic transfer, correcting the field parity. By solving numerically the exact master equation of the system, we show that the protection of simple quantum states could be experimentally demonstrated using presently available experimental apparatus.

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