On-chip implementation of the probabilistic quantum optical state comparison amplifier

Canning, David W. and Donaldson, Ross J. and Mukherjee, Sebabrata and Collins, Robert J. and Mazzarella, Luca and Zanforlin, Ugo and Jeffers, John and Thomson, Robert R. and Buller, Gerald S. (2019) On-chip implementation of the probabilistic quantum optical state comparison amplifier. Optics Express, 27 (22). pp. 31713-31726. ISSN 1094-4087 (https://doi.org/10.1364/OE.27.031713)

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Abstract

Propagation losses in transmission media limit the transmission distance of optical signals. In the case where the signal is made up of quantum optical states, conventional deterministic optical amplification schemes cannot be used to increase the transmission distance as the copying of an arbitrary and unknown quantum state is forbidden. One strategy that can offset propagation loss is the use of probabilistic, or non-deterministic, amplification schemes - an example of which is the state comparison amplifier. Here we report a state comparison amplifier implemented in a compact, fiber-coupled femtosecond laser-written waveguide chip as opposed to the large, bulk-optical components of previous designs. This pathfinder on-chip implementation of the quantum amplifier has resulted in several performance improvements: the polarization integrity of the written waveguides has resulted in improved visibility of the amplifier interferometers; the potential of substantially-reduced losses throughout the amplifier configuration; and a more compact and environmentally-stable amplifier which is scalable to more complex networks.

ORCID iDs

Canning, David W., Donaldson, Ross J., Mukherjee, Sebabrata, Collins, Robert J., Mazzarella, Luca ORCID logoORCID: https://orcid.org/0000-0001-9173-3477, Zanforlin, Ugo, Jeffers, John ORCID logoORCID: https://orcid.org/0000-0002-8573-1675, Thomson, Robert R. and Buller, Gerald S.;
  • Item type:Article
    ID code:70198
    Dates:
    Date
    Event
    28 October 2019
    Published
    17 October 2019
    Published Online
    26 September 2019
    Accepted
    24 July 2019
    Submitted
    Subjects:Science > Physics
    Science > Physics > Optics. Light
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:21 Oct 2019 12:03
    Last modified:11 Nov 2024 12:28
    URI:https://strathprints.strath.ac.uk/id/eprint/70198
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