Arbitrary control of multiple-qubit systems in the symmetric Dicke subspace
Arbitrary control of multiple-qubit systems in the symmetric Dicke subspace
复制标题
对称迪克子空间中多量子位系统的任意控制
DOI：
10.1103/physreva.77.033852
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发表时间：
2008-03
影响因子：
2.9
通讯作者：
郑仕标
中科院分区：
文献类型：
--
作者：
郑仕标
讨论了在对称迪凯子空间中任意控制多量子比特量子态的一般物理机制。量子比特-量子比特耦合导致对称迪凯子空间中的能量间隔不相等。这允许一个操纵一个预先选定的过渡与外部驱动源，与其他过渡保持非谐振。在对称迪凯子空间中，通过调节驱动源，可以从初始基态产生任意纠缠态。我们在腔QED中说明了这一思想，但它应该适用于其他相关系统。
We discuss a general physical mechanism for arbitrary control of the quantum states of multiple qubits in the symmetric Dicke subspace. The qubit-qubit coupling leads to unequal energy spacing in the symmetric Dicke subspace. This allows one to manipulate a prechosen transition with an external driving source, with other transitions remaining off-resonant. Any entangled state in the symmetric Dicke subspace can be created from the initial ground state by tuning the driving source. We illustrate the idea in cavity QED, but it should be applicable to other related systems.