Quantum Energy Teleportation across Multi-Qubit Systems using W-State Entanglement

TL;DR

This paper demonstrates the first multi-qubit quantum energy teleportation protocol using W-state entanglement, enabling energy transfer among multiple parties on quantum hardware, advancing quantum network capabilities.

Contribution

It introduces a novel multi-qubit QET protocol with experimental validation on superconducting hardware, expanding beyond previous two-qubit implementations.

Findings

Successful multi-qubit energy teleportation on IBM hardware

Energy redistribution among multiple entangled nodes confirmed

Protocol scalable to larger multi-qubit systems

Abstract

Quantum-energy teleportation (QET) has so far only been realised on a two-qubit platform. Real-world communication, however, typically involves multiple parties. Here we design and experimentally demonstrate the first multi-qubit QET protocol using a robust W-state multipartite entanglement. Three-, four- and five-qubit circuits were executed both on noiseless simulators and on IBM superconducting hardware. In every case a single sender injects an energy E0 that is then deterministically and decrementally harvested by several remote receivers, confirming that energy introduced at one node can be redistributed among many entangled subsystems at light-speed-limited classical latency. Our results open a practical route toward energy-aware quantum networks.