2014/11/30 by Jose Trevison, Masahiro Hotta · 21 citations
Computer Science · Physics and Astronomy · #Computer science #Ising model #LOCC #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum channel #Quantum discord #Quantum entanglement #Quantum information science #Quantum mechanics #Quantum teleportation #Statistical physics #quant-ph
paper · pdf · doi:10.1088/1751-8113/48/17/175302
published in Journal of Physics A Mathematical and Theoretical 48(17), 175302 (Institute of Physics) · 12 pages, 5 figures
arxiv created 2015/03/17 · openalex publication_date 2015/04/07 · arxiv updated 2015/04/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In general, it is important to identify what is the informational resource for quantum tasks. Quantum energy teleportation (QET) is a quantum task, which attains energy transfer in an operational sense by local operations and classical communication, and is expected to play a role in future development of nano-scale smart grids. We consider QET protocols in a three-element Ising spin system with non-periodic boundary conditions coupled to a thermal bath. The open chain is the minimal model of QET between two edge spins that allows the measurement and operation steps of the QET protocol to be optimized without restriction. It is possible to analyze how two-body correlations of the system, such as mutual information, entanglement and quantum discord, can be resources of this QET at each temperature. In particular, we stress that quantum discord is not the QET resource in some cases, even if arbitrary measurements and operations are available.