Coherence of assistance and regularized coherence of assistance
arXiv:1712.09768 · doi:10.1103/PhysRevA.96.062332
Abstract
We study the relation between the coherence of assistance and the regularized coherence of assistance introduced by Chitambar et al. [E. Chitambar et al., Phys. Rev. Lett. 116, 070402 (2016)]. The necessary and sufficient conditions that these two quantities coincide are provided. Detailed examples are analyzed and the optimal pure state decompositions such that the coherence of assistance equals the regularized coherence of assistance are derived. Moreover, we present the protocol for obtaining the maximal relative entropy coherence, assisted by another party under local measurement and one-way communication in one copy setting.
References in corpus (12)
- Quantum-enhanced measurements: beating the standard quantum limit
- Quantifying Coherence
- Quantum Coherence as a Resource
- Operational Resource Theory of Coherence
- Intrinsic randomness as a measure of quantum coherence
- A computable measure of nonclassicality for light
- Trace-distance measure of coherence
- The Fidelity and Trace Norm Distances for Quantifying Coherence
- Assisted distillation of quantum coherence
- Non-classicality of the molecular vibrations assisting exciton energy transfer at room temperature
- Chemical compass model for avian magnetoreception as a quantum coherent device
- Experimentally Obtaining Maximal Coherence Via Assisted Distillation Pro cess