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.
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Xue, ZY., Zhang, G., Dong, P. et al. Quantum controlled phase gate and cluster states generation via two superconducting quantum interference devices in a cavity. Eur. Phys. J. B 52, 333–336 (2006). https://doi.org/10.1140/epjb/e2006-00297-3
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DOI: https://doi.org/10.1140/epjb/e2006-00297-3