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arXiv · 1610.02477

Remote Creation of Quantum Coherence

Teng Ma·Ming-Jing Zhao·Shao-Ming Fei·Gui-Lu Long
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Abstract

We study remote creation of coherence (RCC) for a quantum system, A, with the help of quantum operations on another system, B, and one-way classical communication.We show that all the nonincoherent quantum states are useful for RCC and all the incoherent-quantum states are not. The necessary and sufficient conditions of RCC for the quantum operations on system B are presented for pure states. The upper bound of average RCC is derived, giving a relation among the entanglement (concurrence), the RCC of the given quantum state, and the RCC of the corresponding maximally entangled state. Moreover, for two-qubit systems we find a simple factorization law for the average remote-created coherence.

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Teng Ma, Ming-Jing Zhao, Shao-Ming Fei, Gui-Lu Long. 2016-10-08. Remote Creation of Quantum Coherence. https://doi.org/10.1103/physreva.94.042312

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