The University of Southampton
University of Southampton Institutional Repository

Multiphoton quantum interference in a multiport integrated photonic device

Multiphoton quantum interference in a multiport integrated photonic device
Multiphoton quantum interference in a multiport integrated photonic device
Increasing the complexity of quantum photonic devices is essential for many optical information processing applications to reach a regime beyond what can be classically simulated, and integrated photonics has emerged as a leading platform for achieving this. Here we demonstrate three-photon quantum operation of an integrated device containing three coupled interferometers, eight spatial modes and many classical and nonclassical interferences. This represents a critical advance over previous complexities and the first on-chip nonclassical interference with more than two photonic inputs. We introduce a new scheme to verify quantum behaviour, using classically characterised device elements and hierarchies of photon correlation functions. We accurately predict the device’s quantum behaviour and show operation inconsistent with both classical and bi-separable quantum models. Such methods for verifying multiphoton quantum behaviour are vital for achieving increased circuit complexity. Our experiment paves the way for the next generation of integrated photonic quantum simulation and computing devices
Metcalf, Benjamin J.
9e0aa2db-b894-43b8-add4-4d31ec09f3af
Thomas-Peter, Nicholas
768fa7c7-6937-49d6-a150-ab1859bb77cb
Spring, Justin B.
daf7635a-8c7f-441a-a1bf-52d04b584806
Kundys, Dmytro
c6bf92f9-9b7f-4541-a140-56dc800bfc7a
Broome, Matthew A.
24309d87-61e3-41c3-9658-867eb53f05ab
Humphreys, Peter C.
9c48abe6-ed60-4d1b-b33a-6a774e9921de
Jin, Xian-Min
ae468859-d37c-41d5-ab8c-5389aa4d533e
Barbieri, Marco
ed77e1c5-6b04-4b0d-a145-6bfe989556b2
Kolthammer, W.Steven
7f364924-236b-4bc2-88b4-3c2a091cff8f
Gates, James C.
b71e31a1-8caa-477e-8556-b64f6cae0dc2
Smith, Brian J.
954d05af-a64d-404b-b03e-770e9cff1ac7
Langford, Nathan K.
083085ed-1d96-4e99-a1d7-93ae584091c7
Smith, Peter G.R.
8979668a-8b7a-4838-9a74-1a7cfc6665f6
Walmsley, Ian A.
c71caeff-d937-48f7-9cb3-16e210bc4947
Metcalf, Benjamin J.
9e0aa2db-b894-43b8-add4-4d31ec09f3af
Thomas-Peter, Nicholas
768fa7c7-6937-49d6-a150-ab1859bb77cb
Spring, Justin B.
daf7635a-8c7f-441a-a1bf-52d04b584806
Kundys, Dmytro
c6bf92f9-9b7f-4541-a140-56dc800bfc7a
Broome, Matthew A.
24309d87-61e3-41c3-9658-867eb53f05ab
Humphreys, Peter C.
9c48abe6-ed60-4d1b-b33a-6a774e9921de
Jin, Xian-Min
ae468859-d37c-41d5-ab8c-5389aa4d533e
Barbieri, Marco
ed77e1c5-6b04-4b0d-a145-6bfe989556b2
Kolthammer, W.Steven
7f364924-236b-4bc2-88b4-3c2a091cff8f
Gates, James C.
b71e31a1-8caa-477e-8556-b64f6cae0dc2
Smith, Brian J.
954d05af-a64d-404b-b03e-770e9cff1ac7
Langford, Nathan K.
083085ed-1d96-4e99-a1d7-93ae584091c7
Smith, Peter G.R.
8979668a-8b7a-4838-9a74-1a7cfc6665f6
Walmsley, Ian A.
c71caeff-d937-48f7-9cb3-16e210bc4947

Metcalf, Benjamin J., Thomas-Peter, Nicholas, Spring, Justin B., Kundys, Dmytro, Broome, Matthew A., Humphreys, Peter C., Jin, Xian-Min, Barbieri, Marco, Kolthammer, W.Steven, Gates, James C., Smith, Brian J., Langford, Nathan K., Smith, Peter G.R. and Walmsley, Ian A. (2013) Multiphoton quantum interference in a multiport integrated photonic device. Nature Communications, 4. (doi:10.1038/ncomms2349).

Record type: Article

Abstract

Increasing the complexity of quantum photonic devices is essential for many optical information processing applications to reach a regime beyond what can be classically simulated, and integrated photonics has emerged as a leading platform for achieving this. Here we demonstrate three-photon quantum operation of an integrated device containing three coupled interferometers, eight spatial modes and many classical and nonclassical interferences. This represents a critical advance over previous complexities and the first on-chip nonclassical interference with more than two photonic inputs. We introduce a new scheme to verify quantum behaviour, using classically characterised device elements and hierarchies of photon correlation functions. We accurately predict the device’s quantum behaviour and show operation inconsistent with both classical and bi-separable quantum models. Such methods for verifying multiphoton quantum behaviour are vital for achieving increased circuit complexity. Our experiment paves the way for the next generation of integrated photonic quantum simulation and computing devices

Full text not available from this repository.

More information

Published date: 15 January 2013
Organisations: Optoelectronics Research Centre, Electronics & Computer Science

Identifiers

Local EPrints ID: 347644
URI: https://eprints.soton.ac.uk/id/eprint/347644
PURE UUID: 4b34ed83-9190-4252-903c-6e0704ffe11a
ORCID for James C. Gates: ORCID iD orcid.org/0000-0001-8671-5987
ORCID for Peter G.R. Smith: ORCID iD orcid.org/0000-0003-0319-718X

Catalogue record

Date deposited: 30 Jan 2013 11:10
Last modified: 03 Dec 2019 02:01

Export record

Altmetrics

Contributors

Author: Benjamin J. Metcalf
Author: Nicholas Thomas-Peter
Author: Justin B. Spring
Author: Dmytro Kundys
Author: Matthew A. Broome
Author: Peter C. Humphreys
Author: Xian-Min Jin
Author: Marco Barbieri
Author: W.Steven Kolthammer
Author: James C. Gates ORCID iD
Author: Brian J. Smith
Author: Nathan K. Langford
Author: Ian A. Walmsley

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×