A review of applications of Quantum Energy Teleportation: from experimental tests to thermodynamics and spacetime engineering

TL;DR

This paper reviews the principles, experimental demonstrations, and diverse applications of Quantum Energy Teleportation (QET), highlighting its potential in quantum thermodynamics, state engineering, and experimental quantum hardware implementations.

Contribution

It provides a comprehensive overview of QET's thermodynamic foundations, experimental tests, and innovative applications in quantum state engineering and thermodynamics.

Findings

First experimental demonstration using Nuclear Magnetic Resonance

Implementation on superconducting quantum hardware

Application as an algorithmic cooling technique

Abstract

Quantum energy teleportation (QET) exploits the existence of correlations to enable remote energy transfer without the need for physical energy carriers between emitter and receiver. This paper presents a review of the thermodynamic foundations of QET and reviews its first experimental demonstration (performed using Nuclear Magnetic Resonance), along with its implementation on publicly available superconducting quantum hardware. Additionally, we review an application of QET in the field of quantum thermodynamics as an efficient algorithmic cooling technique to cool down individual parts of interacting systems. Finally, we will review how QET can be employed to optimally generate exotic quantum states characterized by negative average stress-energy densities, offering a new operational approach to engineering such states which are promising in the context of semiclassical gravity.