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arXiv quant-ph/0510020quant-ph
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二维耦合系统的非相干控制与纠缠

Incoherent control and entanglement for two-dimensional coupled systems

R. Romano, D. D'Alessandro

摘要:

我们调查的可访问性和可控性的量子系统S耦合到一个量子探针P,都描述了二维希尔伯特空间,假设外部控制只影响P.在这种情况下,可访问性和可控性属性描述在何种程度上是可能的驱动系统S的状态,通过作用于P和使用两个系统之间的相互作用。我们给这些属性的必要和充分条件,我们讨论了S和P之间的相互作用的纠缠能力的关系。特别是,我们表明,可控性可以表示在SWAP算子,作用于复合系统,和它的平方根。

英文摘要:

We investigate accessibility and controllability of a quantum system S coupled to a quantum probe P, both described by two-dimensional Hilbert spaces, under the hypothesis that the external control affects only P. In this context accessibility and controllability properties describe to what extent it is possible to drive the state of the system S by acting on P and using the interaction between the two systems. We give necessary and sufficient conditions for these properties and we discuss the relation with the entangling capability of the interaction between S and P. In particular, we show that controllability can be expressed in terms of the SWAP operator, acting on the composite system, and its square root.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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