Dr. Alfonso Tello Castillo Profile

Dr. Alfonso Tello Castillo

at Heriot-Watt Univ

SPIE Involvement:

Author

Publications (8)

Proceedings Article | 30 November 2023 Paper

Investigation on the electromagnetic radiated emissions of a single-photon avalanche diode

John Pantoja, Alfonso Tello, Dimitris Anagnostou, James Kirrane, Mark Stonehouse, Alex Koehler-Sidki, Michele Natrella, Ross Donaldson

Proceedings Volume 12795, 1279509 (2023) https://doi.org/10.1117/12.2689901

KEYWORDS: Single photon avalanche diodes, Quantum receivers, Quantum key distribution, Electromagnetism, Quantum detection, Pulse signals, Antennas, Electromagnetic radiation

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Proceedings Article | 6 June 2023 Presentation + Paper

Multimode fiber influence on single-photon avalanche diode timing jitter

Alexandra Lee, Ross Donaldson, Craig Whitehill, Alfonso Tello Castillo

Proceedings Volume 12570, 1257007 (2023) https://doi.org/10.1117/12.2664836

KEYWORDS: Single photon avalanche diodes, Multimode fibers, Quantum key distribution, Single mode fibers, Tolerancing, Dispersion

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Proceedings Article | 11 January 2023 Presentation + Paper

Multiprotocol quantum key distribution receiver for free space

Alfonso Tello Castillo, Ugo Zanforlin, Gerald Buller, Ross Donaldson

Proceedings Volume 12335, 123350B (2023) https://doi.org/10.1117/12.2646456

KEYWORDS: Quantum key distribution, Receivers, Interferometers, Visibility, Polarization, Design and modelling, Free space, Signal to noise ratio, Technology, Double positive medium

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Proceedings Article | 11 January 2023 Presentation + Paper

An investigation of jamming in free-space quantum key distribution

Cameron Simmons, Yoann Noblet, Alfonso Tello Castillo, Ross Donaldson

Proceedings Volume 12335, 123350C (2023) https://doi.org/10.1117/12.2644866

KEYWORDS: Satellites, Quantum key distribution, Receivers, Photons, Signal detection, Satellite communications, Telescopes, Telecommunications, Reflectivity, Quantum communications

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Proceedings Article | 4 October 2022 Presentation + Paper

Time bin quantum key distribution protocols for free space communications

Alfonso Tello Castillo, Elizabeth Eso, Ross Donaldson

Proceedings Volume 12238, 122380E (2022) https://doi.org/10.1117/12.2632286

KEYWORDS: Quantum key distribution, Relays, Interferometers, Satellites, Visibility, Polarization, Lenses, Turbulence

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Proceedings Article | 6 October 2021 Presentation + Paper

Towards free-space quantum key distribution with a 2D single-photon sensor

Alfonso Tello Castillo, Ross Donaldson

Proceedings Volume 11881, 1188109 (2021) https://doi.org/10.1117/12.2601232

KEYWORDS: Quantum key distribution, Receivers, Sensors, Photons, Transmitters, Visibility, Signal to noise ratio, Interferometers, Interferometry, Detector arrays

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Proceedings Article | 20 September 2020 Presentation + Paper

Link loss analysis for a satellite quantum communication down-link

Chunmei Zhang, Alfonso Tello, Ugo Zanforlin, Gerald Buller, Ross Donaldson

Proceedings Volume 11540, 1154007 (2020) https://doi.org/10.1117/12.2573489

KEYWORDS: Quantum communications, Satellites, Satellite communications, Signal attenuation, Telecommunications, Optical fibers, Telescopes, Error analysis, Singular optics, Computer programming

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Proceedings Article | 20 September 2020 Presentation + Paper

Prospects of time-bin quantum key distribution in turbulent free-space channels

Alfonso Tello Castillo, Catarina Novo, Ross Donaldson

Proceedings Volume 11540, 1154006 (2020) https://doi.org/10.1117/12.2573479

KEYWORDS: Quantum key distribution, Quantum communications, Transmitters, Error analysis, Free space optics, Polarization, Turbulence, Interferometers, Optical fibers, Receivers

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Showing 5 of 8 publications

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