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Exchange-free computation on an unknown qubit at a distance

Lookup NU author(s): Dr Jonte HanceORCiD

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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.

Publication metadata

Author(s): Salih H, Hance JR, McCutcheon W, Rudolph T, Rarity J

Publication type: Article

Publication status: Published

Journal: New Journal of Physics

Year: 2021

Volume: 23

Print publication date: 19/01/2021

Acceptance date: 15/12/2020

Date deposited: 08/04/2024

ISSN (electronic): 1367-2630

Publisher: Institute of Physics Publishing Ltd.

URL: https://doi.org/10.1088/1367-2630/abd3c4

DOI: 10.1088/1367-2630/abd3c4

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