Quantum state comparison amplifier with feedforward state correction

L. Mazzarella, Ross J. Donaldson, Robert John Collins, Ugo Zanforlin, G. Tatsi, Gerald Stuart Buller, J. Jeffers

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Quantum mechanics imposes stringent constraints on the amplification of a quantum signal. Deterministic amplification of an unknown quantum state always implies the addition of a minimal amount of noise. Linear and noiseless amplification is allowed in principle provided that it only works probabilistically. Here we present a probabilistic amplifier that combines two quantum state comparison amplifiers (SCAMP) together with a feed-forward state correction strategy. Our system outperforms the unambiguous state discrimination (USD) measure-and-resend based amplifier in terms of the success probability-fidelity product and requires a more complex experimental setting.

Original languageEnglish
Title of host publicationQuantum Technologies 2018
EditorsJürgen Stuhler, Andrew J. Shields, Miles J. Padgett
PublisherSPIE
ISBN (Electronic)9781510618756
ISBN (Print)9781510618749
DOIs
Publication statusPublished - 21 May 2018
EventQuantum Technologies 2018 - Strasbourg, France
Duration: 23 Apr 201825 Apr 2018
https://spie.org/EPE/conferencedetails/quantum-technologies?SSO=1

Publication series

NameProceedings of SPIE
PublisherSPIE
Volume10674
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceQuantum Technologies 2018
CountryFrance
CityStrasbourg
Period23/04/1825/04/18
Internet address

Fingerprint

Quantum State
Feedforward
Amplification
amplifiers
Quantum theory
Fidelity
Quantum Mechanics
Discrimination
discrimination
quantum mechanics
Imply
Unknown
products

Keywords

  • coherent states
  • optical amplifier
  • probabilistic amplifier
  • Quantum amplifier
  • quantum technologies
  • state amplification
  • state comparison

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Mazzarella, L., Donaldson, R. J., Collins, R. J., Zanforlin, U., Tatsi, G., Buller, G. S., & Jeffers, J. (2018). Quantum state comparison amplifier with feedforward state correction. In J. Stuhler, A. J. Shields, & M. J. Padgett (Eds.), Quantum Technologies 2018 [106741D] (Proceedings of SPIE; Vol. 10674). SPIE. https://doi.org/10.1117/12.2307818
Mazzarella, L. ; Donaldson, Ross J. ; Collins, Robert John ; Zanforlin, Ugo ; Tatsi, G. ; Buller, Gerald Stuart ; Jeffers, J. / Quantum state comparison amplifier with feedforward state correction. Quantum Technologies 2018. editor / Jürgen Stuhler ; Andrew J. Shields ; Miles J. Padgett. SPIE, 2018. (Proceedings of SPIE).
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Mazzarella, L, Donaldson, RJ, Collins, RJ, Zanforlin, U, Tatsi, G, Buller, GS & Jeffers, J 2018, Quantum state comparison amplifier with feedforward state correction. in J Stuhler, AJ Shields & MJ Padgett (eds), Quantum Technologies 2018., 106741D, Proceedings of SPIE, vol. 10674, SPIE, Quantum Technologies 2018, Strasbourg, France, 23/04/18. https://doi.org/10.1117/12.2307818

Quantum state comparison amplifier with feedforward state correction. / Mazzarella, L.; Donaldson, Ross J.; Collins, Robert John; Zanforlin, Ugo; Tatsi, G.; Buller, Gerald Stuart; Jeffers, J.

Quantum Technologies 2018. ed. / Jürgen Stuhler; Andrew J. Shields; Miles J. Padgett. SPIE, 2018. 106741D (Proceedings of SPIE; Vol. 10674).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Mazzarella L, Donaldson RJ, Collins RJ, Zanforlin U, Tatsi G, Buller GS et al. Quantum state comparison amplifier with feedforward state correction. In Stuhler J, Shields AJ, Padgett MJ, editors, Quantum Technologies 2018. SPIE. 2018. 106741D. (Proceedings of SPIE). https://doi.org/10.1117/12.2307818