Ground-State Entanglement gives birth to Quantum Energy Teleportation

TL;DR

This paper demonstrates how ground-state entanglement enables quantum energy teleportation through local operations, allowing energy transfer without heat generation or violating physical laws.

Contribution

It introduces protocols leveraging ground-state entanglement for energy teleportation, highlighting the role of negative-energy-density regions and ensuring no heat is produced during transfer.

Findings

Energy can be teleported without heat generation.

Protocols operate within physical laws including causality.

Ground-state entanglement enables energy transfer in qubit chains.

Abstract

Ground-state entanglement induces emergence of negative-energy-density regions in quantum systems by squeezing zero-point oscillation, keeping total energy of the systems nonnegative. By use of the negativity of quantum energy density, protocols of quantum energy teleportation are proposed that transport energy to distant sites by local operations and classical communication. The energy is teleported without breaking any physical laws including causality and local energy conservation. Because intermediate subsystems of the energy transfer channel are not excited during the protocol execution, the protocol attains energy transportation without heat generation in the channel. We discuss the protocol focusing around qubit chains. In addition, we address a related problem of breaking ground-state entanglement by measurements.