Quantum information transfer and entanglement with SQUID qubits in cavity QED: a dark-state scheme with tolerance for nonuniform device parameter.
Quantum information transfer and entanglement with SQUID qubits in cavity QED: a dark-state scheme with tolerance for nonuniform device parameter.
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DOI：
10.1103/physrevlett.92.117902
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发表时间：
2004-03
影响因子：
8.6
通讯作者：
Chuiping Yang;S. Chu;Siyuan Han
中科院分区：
文献类型：
--
作者：
Chuiping Yang;S. Chu;Siyuan Han
研究了在微波腔中通过暗态实现SQUID量子比特的量子信息传输和纠缠的实验可行性。给出了实际的系统参数。我们的结果表明，用两个SQUID量子比特可以高保真地实现QIT和纠缠。该方案对器件参数的不一致性具有较好的容错性。我们还证明了在微波腔中利用SQUID量子比特可以达到强耦合极限。因此，腔-SQUID系统为非经典微波源的产生和量子通信提供了一种新的途径。
We investigate the experimental feasibility of realizing quantum information transfer (QIT) and entanglement with SQUID qubits in a microwave cavity via dark states. Realistic system parameters are presented. Our results show that QIT and entanglement with two-SQUID qubits can be achieved with a high fidelity. The present scheme is tolerant to device parameter nonuniformity. We also show that the strong coupling limit can be achieved with SQUID qubits in a microwave cavity. Thus, cavity-SQUID systems provide a new way for production of nonclassical microwave source and quantum communication.