• DOI:10.1088/2058-9565/ac8ecd
• Corpus ID: 248085902

From Counterportation to Local Wormholes

@article{Salih2022FromCT,
  title={From Counterportation to Local Wormholes},
  author={Hatim Salih},
  journal={Quantum Science and Technology},
  year={2022}
}

• Hatim Salih
• Published 17 July 2018
• Computer Science
• Quantum Science and Technology

We propose an experimental realisation of the protocol for the counterfactual disembodied transport of an unknown qubit---or what we call counterportation---where sender and receiver, remarkably, exchange no particles. We employ cavity quantum electrodynamics, estimating resources for beating the classical fidelity limit---except, unlike teleportation, no pre-shared entanglement nor classical communication are required. Our approach is multiple orders of magnitude more efficient in terms of physical resources than previously proposed implementation, paving the way for a demonstration using existing imperfect devices. Surprisingly, while such communication is intuitively explained in terms of ``interaction-free'' measurement and the Zeno effect, we show that neither is necessary, with far-reaching implications in support of an underlying physical reality. We go on to characterise an explanatory framework for counterportation starting from constructor theory: local wormholes. Conversely, a counterportation experiment demonstrating the traversability of space, by means of what is essentially a 2-qubit exchange-free quantum computer, can point to the existence in the lab of such traversable wormholes.