Ultra-broadband shortwave polarization modulators for high-speed free-space quantum cryptography

Arnan Mitchell, M Austin, Paul Edwards, Le Nguyen Binh, Lam Anh Bui, Sana Mansoori, Wenn Jing Lai

    Research output: A Conference proceeding or a Chapter in BookConference contribution

    Abstract

    Free-space quantum key exchanges between ground stations and low earth orbiting satellites will be characterized by high link losses, typically of the order of 30 dB or higher. These losses, together with the need to transmit weak Poissonian laser pulses containing on average substantially less than 0.1 photons per transmitted bit to preserve security, will result in exceedingly low channel efficiencies, typically of the order of 10-5. In order to achieve even a relatively modest secure key bit rate of 100 kbps, it will therefore often be necessary to key the transmitter at rates in excess of 10 Gbps. In this paper we outline several different methods of achieving such fast polarization keying including the use of dual drive Mach-Zehnder intensity modulators on lithium niobate in a hybrid fibre-guided modulator structures. We then propose a total integrated polarization keying structure in LiNbO3. We describe the fabrication and testing of such ultra-broadband polarization keyers suitable for use in high loss, short-wave free-space quantum key distribution systems employing silicon photon counters. We also indicate how these devices may be incorporated into quantum key satellite courier payloads and ground station terminals
    Original languageEnglish
    Title of host publicationProceedings of SPIE Volume 5161: Quantum Communications and Quantum Imaging
    EditorsRonald E Meyers, Yanhua Shih
    Place of PublicationUSA
    PublisherURSI Commission F Triennium Open Symposium
    Pages66-75
    Number of pages10
    ISBN (Print)9780819450340
    DOIs
    Publication statusPublished - 2004
    EventSPIE, Quantum Communications and Quantum Imaging - San Diego, California, United States
    Duration: 6 Aug 20038 Aug 2003

    Conference

    ConferenceSPIE, Quantum Communications and Quantum Imaging
    CountryUnited States
    CityCalifornia
    Period6/08/038/08/03

    Fingerprint

    quantum cryptography
    modulators
    keying
    ground stations
    Courier satellite
    high speed
    payload stations
    broadband
    polarization
    photons
    lithium niobates
    transmitters
    counters
    fabrication
    fibers
    silicon
    pulses
    lasers

    Cite this

    Mitchell, A., Austin, M., Edwards, P., Binh, L. N., Bui, L. A., Mansoori, S., & Lai, W. J. (2004). Ultra-broadband shortwave polarization modulators for high-speed free-space quantum cryptography. In R. E. Meyers, & Y. Shih (Eds.), Proceedings of SPIE Volume 5161: Quantum Communications and Quantum Imaging (pp. 66-75). USA: URSI Commission F Triennium Open Symposium. https://doi.org/10.1117/12.505577
    Mitchell, Arnan ; Austin, M ; Edwards, Paul ; Binh, Le Nguyen ; Bui, Lam Anh ; Mansoori, Sana ; Lai, Wenn Jing. / Ultra-broadband shortwave polarization modulators for high-speed free-space quantum cryptography. Proceedings of SPIE Volume 5161: Quantum Communications and Quantum Imaging. editor / Ronald E Meyers ; Yanhua Shih. USA : URSI Commission F Triennium Open Symposium, 2004. pp. 66-75
    @inproceedings{d28aff29b50141ca97ec014c677f51cc,
    title = "Ultra-broadband shortwave polarization modulators for high-speed free-space quantum cryptography",
    abstract = "Free-space quantum key exchanges between ground stations and low earth orbiting satellites will be characterized by high link losses, typically of the order of 30 dB or higher. These losses, together with the need to transmit weak Poissonian laser pulses containing on average substantially less than 0.1 photons per transmitted bit to preserve security, will result in exceedingly low channel efficiencies, typically of the order of 10-5. In order to achieve even a relatively modest secure key bit rate of 100 kbps, it will therefore often be necessary to key the transmitter at rates in excess of 10 Gbps. In this paper we outline several different methods of achieving such fast polarization keying including the use of dual drive Mach-Zehnder intensity modulators on lithium niobate in a hybrid fibre-guided modulator structures. We then propose a total integrated polarization keying structure in LiNbO3. We describe the fabrication and testing of such ultra-broadband polarization keyers suitable for use in high loss, short-wave free-space quantum key distribution systems employing silicon photon counters. We also indicate how these devices may be incorporated into quantum key satellite courier payloads and ground station terminals",
    author = "Arnan Mitchell and M Austin and Paul Edwards and Binh, {Le Nguyen} and Bui, {Lam Anh} and Sana Mansoori and Lai, {Wenn Jing}",
    year = "2004",
    doi = "10.1117/12.505577",
    language = "English",
    isbn = "9780819450340",
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    Mitchell, A, Austin, M, Edwards, P, Binh, LN, Bui, LA, Mansoori, S & Lai, WJ 2004, Ultra-broadband shortwave polarization modulators for high-speed free-space quantum cryptography. in RE Meyers & Y Shih (eds), Proceedings of SPIE Volume 5161: Quantum Communications and Quantum Imaging. URSI Commission F Triennium Open Symposium, USA, pp. 66-75, SPIE, Quantum Communications and Quantum Imaging, California, United States, 6/08/03. https://doi.org/10.1117/12.505577

    Ultra-broadband shortwave polarization modulators for high-speed free-space quantum cryptography. / Mitchell, Arnan; Austin, M; Edwards, Paul; Binh, Le Nguyen; Bui, Lam Anh; Mansoori, Sana; Lai, Wenn Jing.

    Proceedings of SPIE Volume 5161: Quantum Communications and Quantum Imaging. ed. / Ronald E Meyers; Yanhua Shih. USA : URSI Commission F Triennium Open Symposium, 2004. p. 66-75.

    Research output: A Conference proceeding or a Chapter in BookConference contribution

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    AU - Mansoori, Sana

    AU - Lai, Wenn Jing

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    N2 - Free-space quantum key exchanges between ground stations and low earth orbiting satellites will be characterized by high link losses, typically of the order of 30 dB or higher. These losses, together with the need to transmit weak Poissonian laser pulses containing on average substantially less than 0.1 photons per transmitted bit to preserve security, will result in exceedingly low channel efficiencies, typically of the order of 10-5. In order to achieve even a relatively modest secure key bit rate of 100 kbps, it will therefore often be necessary to key the transmitter at rates in excess of 10 Gbps. In this paper we outline several different methods of achieving such fast polarization keying including the use of dual drive Mach-Zehnder intensity modulators on lithium niobate in a hybrid fibre-guided modulator structures. We then propose a total integrated polarization keying structure in LiNbO3. We describe the fabrication and testing of such ultra-broadband polarization keyers suitable for use in high loss, short-wave free-space quantum key distribution systems employing silicon photon counters. We also indicate how these devices may be incorporated into quantum key satellite courier payloads and ground station terminals

    AB - Free-space quantum key exchanges between ground stations and low earth orbiting satellites will be characterized by high link losses, typically of the order of 30 dB or higher. These losses, together with the need to transmit weak Poissonian laser pulses containing on average substantially less than 0.1 photons per transmitted bit to preserve security, will result in exceedingly low channel efficiencies, typically of the order of 10-5. In order to achieve even a relatively modest secure key bit rate of 100 kbps, it will therefore often be necessary to key the transmitter at rates in excess of 10 Gbps. In this paper we outline several different methods of achieving such fast polarization keying including the use of dual drive Mach-Zehnder intensity modulators on lithium niobate in a hybrid fibre-guided modulator structures. We then propose a total integrated polarization keying structure in LiNbO3. We describe the fabrication and testing of such ultra-broadband polarization keyers suitable for use in high loss, short-wave free-space quantum key distribution systems employing silicon photon counters. We also indicate how these devices may be incorporated into quantum key satellite courier payloads and ground station terminals

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    Mitchell A, Austin M, Edwards P, Binh LN, Bui LA, Mansoori S et al. Ultra-broadband shortwave polarization modulators for high-speed free-space quantum cryptography. In Meyers RE, Shih Y, editors, Proceedings of SPIE Volume 5161: Quantum Communications and Quantum Imaging. USA: URSI Commission F Triennium Open Symposium. 2004. p. 66-75 https://doi.org/10.1117/12.505577