Remote Creation of Quantum Coherence
Quantum Physics
2016-10-11 v1
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.
Cite
@article{arxiv.1610.02477,
title = {Remote Creation of Quantum Coherence},
author = {Teng Ma and Ming-Jing Zhao and Shao-Ming Fei and Gui-Lu Long},
journal= {arXiv preprint arXiv:1610.02477},
year = {2016}
}
Comments
6 pages, 1 figure