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中文摘要：
利用两个超导量子干涉仪与腔场的相互作用,提出一种实现标准两比特量子相位门的方案。利用构造的两比特相位门,还提出了一种制备N比特团簇态的方案。在此方案中,量子信息被编码在两个超导量子干涉仪的相对稳定的基态上。在两个超导量子干涉仪与单模腔场的相互作用过程中,由于超导量子干涉比特的激发态被绝热地消去,激发态所引起的消相干得到了有效的抑制。此外,还讨论方案的实验可行性。
英文摘要：
We propose a model to implement the standard two-qubit quantum phase gate via a large detuned interaction of two superconducting quantum interference devices（SQUIDs） with a single-mode vacuum cavity-field.With the constructed phase gate,a scheme for generating an N-qubit cluster state is also presented.In our protocol,the quantum information is encoded in the ground states of two rf SQUIDs.During the interaction between the rf SQUIDs and the single-mode vacuum cavity-field,the effect of decoherence caused from the upper levels of the SQUID system is negligible due to fact that the excited states of the rf SQUIDs are adiabatically eliminated under large detuning condition.The experimental feasibility of the schemes is also discussed.
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Entanglement Swapping for Cluster-Class States and Its Applications in Quantum Information Processin
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