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arXiv · 1202.5382

Quantum information processing and multiatom entanglement engineering with a thermal cavity

Shi-Biao Zheng
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Abstract

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.

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Shi-Biao Zheng. 2012-02-24. Quantum information processing and multiatom entanglement engineering with a thermal cavity. https://doi.org/10.1103/physreva.66.060303

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