Deterministic Teleportation and Universal Computation Without Particle Exchange

Hatim Salih, Jonte R. Hance, Will McCutcheon, Terry Rudolph, John Rarity

Research output: Contribution to journalArticle (Academic Journal)

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Teleportation is a cornerstone of quantum technologies, and has played a key role in the development of quantum information theory. Pushing the limits of teleportation is therefore of particular importance. Here, we apply a different aspect of quantum weirdness to teleportation---namely exchange-free computation at a distance. The controlled-phase universal gate we propose, where no particles are exchanged between control and target, allows complete Bell detection among two remote parties, and is experimentally feasible. Our teleportation-with-a-twist, which we extend to telecloning, then requires no pre-shared entanglement between sender and receiver, nor classical communication, with the teleported state gradually appearing at its destination.
Original languageEnglish
Number of pages7
Publication statusSubmitted - 11 Sep 2020


  • quant-ph


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