Generation and Detection of Continuous Variable Quantum Vortex States via Compact Photonic Devices

Generation and Detection of Continuous Variable Quantum Vortex States via Compact Photonic Devices

A quantum photonic circuit with the ability to produce continuous variable quantum vortex states is proposed. This device produces two single-mode squeezed states which go through a Mach-Zehnder interferometer where photons are subtracted by means of weakly coupled directional couplers towards ancil...

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Main Authors: David Barral, Daniel Balado, Jesús Liñares
Format: Article
Language:English
Published: MDPI AG 2017-01-01
Series:Photonics
Subjects:
quantum information processing
continuous variables
integrated optics
Online Access:http://www.mdpi.com/2304-6732/4/1/2
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spelling doaj-bbac809ba82d45f78d520714aa0fe2532020-11-24T22:43:22ZengMDPI AGPhotonics2304-67322017-01-0141210.3390/photonics4010002photonics4010002Generation and Detection of Continuous Variable Quantum Vortex States via Compact Photonic DevicesDavid Barral0Daniel Balado1Jesús Liñares2Optics Area, Department of Applied Physics, Faculty of Physics and Faculty of Optics and Optometry, University of Santiago de Compostela, Campus Vida s/n (Campus Universitario Sur), Santiago de Compostela, Galicia E-15782, SpainOptics Area, Department of Applied Physics, Faculty of Physics and Faculty of Optics and Optometry, University of Santiago de Compostela, Campus Vida s/n (Campus Universitario Sur), Santiago de Compostela, Galicia E-15782, SpainOptics Area, Department of Applied Physics, Faculty of Physics and Faculty of Optics and Optometry, University of Santiago de Compostela, Campus Vida s/n (Campus Universitario Sur), Santiago de Compostela, Galicia E-15782, SpainA quantum photonic circuit with the ability to produce continuous variable quantum vortex states is proposed. This device produces two single-mode squeezed states which go through a Mach-Zehnder interferometer where photons are subtracted by means of weakly coupled directional couplers towards ancillary waveguides. The detection of a number of photons in these modes heralds the production of a quantum vortex. Likewise, a measurement system of the order and handedness of quantum vortices is introduced and the performance of both devices is analyzed in a realistic scenario by means of the Wigner function. These devices open the possibility of using the quantum vortices as carriers of quantum information.http://www.mdpi.com/2304-6732/4/1/2quantum information processingcontinuous variablesintegrated optics
collection DOAJ
language English
format Article
sources DOAJ
author David Barral
Daniel Balado
Jesús Liñares
spellingShingle David Barral
Daniel Balado
Jesús Liñares
Generation and Detection of Continuous Variable Quantum Vortex States via Compact Photonic Devices
Photonics
quantum information processing
continuous variables
integrated optics
author_facet David Barral
Daniel Balado
Jesús Liñares
author_sort David Barral
title Generation and Detection of Continuous Variable Quantum Vortex States via Compact Photonic Devices
title_short Generation and Detection of Continuous Variable Quantum Vortex States via Compact Photonic Devices
title_full Generation and Detection of Continuous Variable Quantum Vortex States via Compact Photonic Devices
title_fullStr Generation and Detection of Continuous Variable Quantum Vortex States via Compact Photonic Devices
title_full_unstemmed Generation and Detection of Continuous Variable Quantum Vortex States via Compact Photonic Devices
title_sort generation and detection of continuous variable quantum vortex states via compact photonic devices
publisher MDPI AG
series Photonics
issn 2304-6732
publishDate 2017-01-01
description A quantum photonic circuit with the ability to produce continuous variable quantum vortex states is proposed. This device produces two single-mode squeezed states which go through a Mach-Zehnder interferometer where photons are subtracted by means of weakly coupled directional couplers towards ancillary waveguides. The detection of a number of photons in these modes heralds the production of a quantum vortex. Likewise, a measurement system of the order and handedness of quantum vortices is introduced and the performance of both devices is analyzed in a realistic scenario by means of the Wigner function. These devices open the possibility of using the quantum vortices as carriers of quantum information.
topic quantum information processing
continuous variables
integrated optics
url http://www.mdpi.com/2304-6732/4/1/2
work_keys_str_mv AT davidbarral generationanddetectionofcontinuousvariablequantumvortexstatesviacompactphotonicdevices
AT danielbalado generationanddetectionofcontinuousvariablequantumvortexstatesviacompactphotonicdevices
AT jesuslinares generationanddetectionofcontinuousvariablequantumvortexstatesviacompactphotonicdevices
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