Remote Creation of Quantum Coherence

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.

6 pages, 1 figure

References in corpus (5)

• Measuring Quantum Coherence with Entanglement
• Observable measure of quantum coherence in finite dimensional systems
• Using entanglement against noise in quantum metrology
• Frozen Quantum Coherence
• A computable measure of nonclassicality for light

Cited by in corpus (2)

• Enhancing coherence of a state by stochastic strictly incoherent operations
• Preservation of quantum coherence under Lorentz boost for narrow uncertainty wave packets