Quantum Energy Teleportation without Limit of Distance

TL;DR

This paper demonstrates that quantum energy teleportation (QET) can surpass the traditional distance limit by employing squeezed states, challenging previous assumptions about the maximum teleportable energy over distance.

Contribution

It proves the inverse relationship between teleportation energy and distance using vacuum states and introduces a method to overcome this limit with squeezed states.

Findings

Energy teleportation bound inversely proportional to distance with vacuum states

Squeezed states enable surpassing the distance limit in QET

Potential for experimental verification using quantum Hall edge currents

Abstract

Quantum energy teleportation (QET) is, from an operational viewpoint of distant protocol users, the transportation of energy via local operations and classical communication. QET has various links to fundamental research fields, including black hole physics, the quantum theory of Maxwell's demon, and condensed-matter entanglement. There are promising signs that QET will be experimentally verified using the chiral boson fields of quantum Hall edge currents. In this Letter, we prove that, using the vacuum state of a quantum field, the upper bound of the amount of energy teleported by QET is inversely proportional to the transfer distance. This distance bound can be overcome by using squeezed states with local-vacuum regions.