Quantum state transfer and logic gates with two 3-level atoms in cavity QED

Chui-Ping Yang and Shih-I Chu

Physica A: Statistical Mechanics and its Applications, 2004, vol. 339, issue 3, 347-353

Abstract: We present a new way to implement quantum controlled phase-shift gate, quantum exchange gate (SWAP gate), and quantum state transfer with two 3-level atoms in cavity QED. The method does not involve real excitation of a cavity photon during the operation, thus decoherence induced due to the cavity-photon decay is minimized. In addition, it is remarkable that for all present purposes, no auxiliary atoms or any measurement is needed. Therefore, the operation is significantly simplified.

Keywords: Quantum state transfer; Quantum logic gates; Decoherence (search for similar items in EconPapers)
Date: 2004
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:339:y:2004:i:3:p:347-353

DOI: 10.1016/j.physa.2004.03.062

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