Exchange-Free Computation on an Unknown Qubit at a Distance

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

doi:10.1088/1367-2630/abd3c4

Exchange-Free Computation on an Unknown Qubit at a Distance

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

^*Corresponding author for this work

Research output: Contribution to journal › Article (Academic Journal) › peer-review

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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.

Original language	English
Article number	013004
Number of pages	10
Journal	New Journal of Physics
Volume	23
Issue number	1
DOIs	https://doi.org/10.1088/1367-2630/abd3c4
Publication status	Published - 19 Jan 2021

Bibliographical note

Funding Information:
We thank Claudio Marinelli for helping to bring this collaboration together. This work was supported by the Engineering and Physical Sciences Research Council (Grants EP/P510269/1, EP/T001011/1, EP/R513386/1, EP/M013472/1 and EP/L024020/1).

Publisher Copyright:
© 2021 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft

Keywords

quant-ph

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10.1088/1367-2630/abd3c4

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Quantum Optics for Integrated Photonic Technologies
Rarity, J. G.
16/06/14 → 15/06/19
Project: Research

Cite this

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title = "Exchange-Free Computation on an Unknown Qubit at a Distance",

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.",

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AU - Salih, Hatim

AU - Hance, Jonte R.

AU - McCutcheon, Will

AU - Rudolph, Terry

AU - Rarity, John

N1 - Funding Information: We thank Claudio Marinelli for helping to bring this collaboration together. This work was supported by the Engineering and Physical Sciences Research Council (Grants EP/P510269/1, EP/T001011/1, EP/R513386/1, EP/M013472/1 and EP/L024020/1). Publisher Copyright: © 2021 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft

PY - 2021/1/19

Y1 - 2021/1/19

N2 - 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.

AB - 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.

KW - quant-ph

U2 - 10.1088/1367-2630/abd3c4

DO - 10.1088/1367-2630/abd3c4

M3 - Article (Academic Journal)

VL - 23

JO - New Journal of Physics

JF - New Journal of Physics

SN - 1367-2630

IS - 1

M1 - 013004

ER -

Exchange-Free Computation on an Unknown Qubit at a Distance

Abstract

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Keywords

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Quantum Optics for Integrated Photonic Technologies

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