Quantum controlled phase gate and cluster states generation via two superconducting quantum interference devices in a cavity

Z.-Y. Xue (), G. Zhang, P. Dong, Y.-M. Yi and Z.-L. Cao ()

The European Physical Journal B: Condensed Matter and Complex Systems, 2006, vol. 52, issue 3, 333-336

Abstract: A scheme for implementing 2-qubit quantum controlled phase gate (QCPG) is proposed with two superconducting quantum interference devices (SQUIDs) in a cavity. The gate operations are realized within the two lower flux states of the SQUIDs by using a quantized cavity field and classical microwave pulses. Our scheme is achieved without any type of measurement, does not use the cavity mode as the data bus and only requires a very short resonant interaction of the SQUID-cavity system. As an application of the QCPG operation, we also propose a scheme for generating the cluster states of many SQUIDs. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006

Keywords: 03.67.Lx Quantum computation, 03.65.Ud Entanglement and quantum nonlocality, 42.50.Dv Nonclassical states of the electromagnetic field, including entangled photon states; quantum state engineering and measurements, (search for similar items in EconPapers)
Date: 2006
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DOI: 10.1140/epjb/e2006-00297-3

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