Journal article
Using an imperfect photonic network to implement random unitaries
- Abstract:
- We numerically investigate the implementation of Haar-random unitarity transformations and Fourier transformations in photonic devices consisting of beam splitters and phase shifters, which are used for integrated photonics implementations of boson sampling. The distribution of reflectivities required to implement an arbitrary unitary transformation is skewed towards low values, and this skew becomes stronger the larger the number of modes. A realistic implementation using Mach-Zehnder interferometers is incapable of achieving the low values required and thus has limited fidelity. We show that numerical optimisation and adding extra beam splitters to the network can help to restore fidelity.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 4.0MB, Terms of use)
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- Publisher copy:
- 10.1364/OE.25.028236
Authors
- Publisher:
- Optical Society of America
- Journal:
- Optics Express More from this journal
- Volume:
- 25
- Issue:
- 23
- Pages:
- 28236-28245
- Publication date:
- 2017-10-31
- Acceptance date:
- 2017-07-18
- DOI:
- ISSN:
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1094-4087
- Pubs id:
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pubs:724408
- UUID:
-
uuid:4da08144-4d61-446e-92a2-b845b78056e0
- Local pid:
-
pubs:724408
- Source identifiers:
-
724408
- Deposit date:
-
2017-08-29
Terms of use
- Copyright holder:
- Burgwal et al
- Copyright date:
- 2017
- Notes:
- Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
- Licence:
- CC Attribution (CC BY)
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