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Multimode quantum interference of photons in multiport integrated devices

Multimode quantum interference of photons in multiport integrated devices
Multimode quantum interference of photons in multiport integrated devices
Photonics is a leading approach in realizing future quantum technologies and recently, optical waveguide circuits on silicon chips have demonstrated high levels of miniaturization and performance. Multimode interference (MMI) devices promise a straightforward implementation of compact and robust multiport circuits. Here, we show quantum interference in a 2×2 MMI coupler with visibility of V=95.6±0.9%. We further demonstrate the operation of a 4×4 port MMI device with photon pairs, which exhibits complex quantum interference behaviour. We have developed a new technique to fully characterize such multiport devices, which removes the need for phase-sensitive measurements and may find applications for a wide range of photonic devices. Our results show that MMI devices can operate in the quantum regime with high fidelity and promise substantial simplification and concatenation of photonic quantum circuits
224
Peruzzo, Alberto
01b3682e-f137-40ca-8a9b-1dacf59ab0a6
Laing, Anthony
785153da-477d-4605-b117-f56836ce9056
Politi, Alberto
cf75c0a8-d34d-4cbe-b9d5-e408c0edeeec
Rudolph, Terry
b8b80ef7-fa90-44aa-86be-dc9ecbc4f612
O'Brien, Jeremy L.
03208a26-089b-4212-b691-87f26cff783c
Peruzzo, Alberto
01b3682e-f137-40ca-8a9b-1dacf59ab0a6
Laing, Anthony
785153da-477d-4605-b117-f56836ce9056
Politi, Alberto
cf75c0a8-d34d-4cbe-b9d5-e408c0edeeec
Rudolph, Terry
b8b80ef7-fa90-44aa-86be-dc9ecbc4f612
O'Brien, Jeremy L.
03208a26-089b-4212-b691-87f26cff783c

Peruzzo, Alberto, Laing, Anthony, Politi, Alberto, Rudolph, Terry and O'Brien, Jeremy L. (2011) Multimode quantum interference of photons in multiport integrated devices. Nature Communications, 2, 224. (doi:10.1038/ncomms1228).

Record type: Article

Abstract

Photonics is a leading approach in realizing future quantum technologies and recently, optical waveguide circuits on silicon chips have demonstrated high levels of miniaturization and performance. Multimode interference (MMI) devices promise a straightforward implementation of compact and robust multiport circuits. Here, we show quantum interference in a 2×2 MMI coupler with visibility of V=95.6±0.9%. We further demonstrate the operation of a 4×4 port MMI device with photon pairs, which exhibits complex quantum interference behaviour. We have developed a new technique to fully characterize such multiport devices, which removes the need for phase-sensitive measurements and may find applications for a wide range of photonic devices. Our results show that MMI devices can operate in the quantum regime with high fidelity and promise substantial simplification and concatenation of photonic quantum circuits

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Accepted/In Press date: 3 February 2011
Published date: 1 March 2011
Organisations: Quantum, Light & Matter Group

Identifiers

Local EPrints ID: 377117
URI: http://eprints.soton.ac.uk/id/eprint/377117
PURE UUID: 269b523a-af7a-47d4-b0f6-f046fe111436
ORCID for Alberto Politi: ORCID iD orcid.org/0000-0002-3668-9474

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Date deposited: 22 May 2015 13:17
Last modified: 17 Dec 2019 01:36

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Contributors

Author: Alberto Peruzzo
Author: Anthony Laing
Author: Alberto Politi ORCID iD
Author: Terry Rudolph
Author: Jeremy L. O'Brien

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