Exchange-free computation on an unknown qubit at a distance

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

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

We present a way of directly manipulating an arbitrary qubit, without the exchange of any particles. This includes as an application the exchange-free preparation of an arbitrary quantum state at Alice by a remote classical Bob. As a result, we are able to propose a protocol that allows one party to directly enact, by means of a suitable program, any computation exchange-free on a remote second party's unknown qubit. Further, we show how to use this for the exchange-free control of a universal two-qubit gate, thus opening the possibility of directly enacting any desired algorithm remotely on a programmable quantum circuit.

Original languageEnglish
Article number013004
JournalNew Journal of Physics
Volume23
Issue number1
Early online date19 Jan 2021
DOIs
Publication statusPublished - Jan 2021

Keywords

  • Counterfactual communication
  • Quantum algorithms
  • Quantum computation
  • Quantum information

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint

Dive into the research topics of 'Exchange-free computation on an unknown qubit at a distance'. Together they form a unique fingerprint.

Cite this