Silica-on-silicon waveguide quantum circuits
Silica-on-silicon waveguide quantum circuits
Quantum technologies based on photons will likely require an integrated optics architecture for improved performance, miniaturization, and scalability. We demonstrate high-fidelity silica-on-silicon integrated optical realizations of key quantum photonic circuits, including two-photon quantum interference with a visibility of 94.8 ± 0.5%; a controlled-NOT gate with an average logical basis fidelity of 94.3 ± 0.2%; and a path-entangled state of two photons with fidelity of >92%. These results show that it is possible to directly “write” sophisticated photonic quantum circuits onto a silicon chip, which will be of benefit to future quantum technologies based on photons, including information processing, communication, metrology, and lithography, as well as the fundamental science of quantum optics.
646-649
Politi, Alberto
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Cryan, Martin
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Rarity, John
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Yu, Siyuan
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O'Brien, Jeremy
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27 March 2008
Politi, Alberto
cf75c0a8-d34d-4cbe-b9d5-e408c0edeeec
Cryan, Martin
aaa0436c-5fe7-4e78-930a-3579c45cec24
Rarity, John
e52b9260-c19f-4481-9bc8-e1086f29a6b6
Yu, Siyuan
10fdb73d-5561-49ad-bf80-d347f0227753
O'Brien, Jeremy
850b6d73-858f-4140-a054-547ae011e435
Politi, Alberto, Cryan, Martin, Rarity, John, Yu, Siyuan and O'Brien, Jeremy
(2008)
Silica-on-silicon waveguide quantum circuits.
Science, 320 (5876), .
(doi:10.1126/science.1155441).
Abstract
Quantum technologies based on photons will likely require an integrated optics architecture for improved performance, miniaturization, and scalability. We demonstrate high-fidelity silica-on-silicon integrated optical realizations of key quantum photonic circuits, including two-photon quantum interference with a visibility of 94.8 ± 0.5%; a controlled-NOT gate with an average logical basis fidelity of 94.3 ± 0.2%; and a path-entangled state of two photons with fidelity of >92%. These results show that it is possible to directly “write” sophisticated photonic quantum circuits onto a silicon chip, which will be of benefit to future quantum technologies based on photons, including information processing, communication, metrology, and lithography, as well as the fundamental science of quantum optics.
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Published date: 27 March 2008
Organisations:
Quantum, Light & Matter Group
Identifiers
Local EPrints ID: 358542
URI: http://eprints.soton.ac.uk/id/eprint/358542
ISSN: 0036-8075
PURE UUID: c6ac6e21-e1b3-47ff-b476-76d56eaface2
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Date deposited: 11 Oct 2013 13:06
Last modified: 15 Mar 2024 03:49
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Author:
Martin Cryan
Author:
John Rarity
Author:
Siyuan Yu
Author:
Jeremy O'Brien
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