1301.0485 (Masahiro Hotta)

Ground-State Entanglement Bound for Quantum Energy Teleportation of
General Spin-Chain Models    [PDF]

Masahiro Hotta

In protocols of quantum energy teleportation (QET), ground-state entanglement of many-body systems plays a crucial role. For a general class of spin-chain systems, we show analytically that the entanglement entropy is lower bounded by a positive quadratic function of the teleported energy between the regions of a QET protocol. This supports a general conjecture that ground-state entanglement is an evident physical resource for energy transportation in the context of QET

View original: http://arxiv.org/abs/1301.0485