Prof. Kentaro Kato Profile

Prof. Kentaro Kato

at Tamagawa Univ

SPIE Involvement:

Author

Publications (20)

Proceedings Article | 3 October 2023 Presentation + Paper

Presentation + Paper

Quantum-enhanced secure-link architecture with quantum stream cipher Y-00 and post-quantum cryptography: basic structure and experiment

Kentaro Kato, Fumio Futami, Ken Tanizawa

Proceedings Volume 12692, 126920C (2023) https://doi.org/10.1117/12.2677258

KEYWORDS: Quantum signals, Data communications, Quantum optical communication, Quantum experiments, Quantum networks, Quantum cryptography, Quantum receivers, Quantum numbers, Optical networks, Quantum optics experiments, Quantum signal detection, Quantum random number generation

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Proceedings Article | 15 March 2023 Presentation + Paper

Presentation + Paper

Field-installed fiber transmission of Y-00 quantum noise stream cipher with quantum deliberate signal randomization

Fumio Futami, Ken Tanizawa, Kentaro Kato

Proceedings Volume 12429, 124291J (2023) https://doi.org/10.1117/12.2645899

KEYWORDS: Quantum signals, Quantum encryption, Phase shift keying, Quantum noise, Quantum numbers, Quantum stream ciphers, Quantum security, Quantum data, Quantum receivers, Optical transmission

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Proceedings Article | 18 September 2018 Paper

Paper

Experimental investigation of security parameter of Y-00 quantum stream cipher transceiver with randomization technique: part II

Fumio Futami, Ken Tanizawa, Kentaro Kato, Osamu Hirota

Proceedings Volume 10771, 1077114 (2018) https://doi.org/10.1117/12.2320820

KEYWORDS: Transceivers, Signal detection, Interference (communication), Binary data, Signal to noise ratio, Computer security, Quantum communications, Modulation, Sensors, Signal generators

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Proceedings Article | 30 August 2017 Paper

Paper

Experimental investigation of security parameters of Y-00 quantum stream cipher transceiver with randomization technique: part I

Fumio Futami, Ken Tanizawa, Kentaro Kato, Osamu Hirota

Proceedings Volume 10409, 104090I (2017) https://doi.org/10.1117/12.2273462

KEYWORDS: Internet

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Proceedings Article | 30 August 2017 Presentation + Paper

Presentation + Paper

A unified analysis of optical signal modulation formats for quantum enigma cipher

Kentaro Kato

Proceedings Volume 10409, 104090K (2017) https://doi.org/10.1117/12.2272534

KEYWORDS: Quantum cryptography, Modulation, Signal detection, Signal analyzers, Optical communications, Symmetric-key encryption, Telecommunications, Fiber optic communications

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Proceedings Article | 13 September 2016 Presentation + Paper

Presentation + Paper

Quantum enigma cipher as a generalization of the quantum stream cipher

Kentaro Kato

Proceedings Volume 9980, 998005 (2016) https://doi.org/10.1117/12.2237570

KEYWORDS: Optical communications, Computer security, Detection theory, Signal detection, Receivers, Modulation, Quantum physics, Quadrature amplitude modulation, Telecommunications, Optical fiber cables

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Proceedings Article | 13 September 2016 Paper

Paper

A novel transceiver of the Y-00 quantum stream cipher with the randomization technique for optical communication with higher security performance

Fumio Futami, Kentaro Kato, Osamu Hirota

Proceedings Volume 9980, 99800O (2016) https://doi.org/10.1117/12.2237852

KEYWORDS: Quantum communications, Optical communications, Transceivers, Modulation, Receivers, Binary data, Signal detection, Signal generators, Signal attenuation, Fiber optic communications

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Proceedings Article | 1 September 2015 Paper

Paper

Quasi-Bell entangled coherent states and its quantum discrimination problem in the presence of thermal noise

Kentaro Kato

Proceedings Volume 9615, 96150N (2015) https://doi.org/10.1117/12.2188103

KEYWORDS: Probability theory, Binary data, Thermal effects, Quantum communications, Phase shift keying, Quantum information, Entangled states, Superposition, Thermography, Computer simulations

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Proceedings Article | 8 October 2014 Paper

Paper

Enhancement of quantum noise effect by classical error control codes in the intensity shift keying Y-00 quantum stream cipher

Kentaro Kato

Proceedings Volume 9225, 922508 (2014) https://doi.org/10.1117/12.2060631

KEYWORDS: Signal detection, Receivers, Quantum communications, Binary data, Error control coding, Phase shift keying, Data modeling, Stereolithography, Quantum cryptography, Interference (communication)

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Proceedings Article | 26 September 2013 Paper

Paper

Effect of decoherence in quantum reading with phase shift keying signal of entangled coherent states

Kentaro Kato, Osamu Hirota

Proceedings Volume 8875, 88750P (2013) https://doi.org/10.1117/12.2023151

KEYWORDS: Phase shift keying, Binary data, Signal attenuation, Quantum communications, Quantum information, Computer programming, Error analysis, Solids, Receivers, Modulators

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Proceedings Article | 25 October 2012 Paper

Paper

Incompleteness and limit of security theory of quantum key distribution

Osamu Hirota, Dan Murakami, Kentaro Kato, Fumio Futami

Proceedings Volume 8518, 851807 (2012) https://doi.org/10.1117/12.929185

KEYWORDS: Quantum key distribution, Information security, Current controlled current source, Probability theory, Quantum communications, Failure analysis

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Proceedings Article | 7 September 2011 Paper

Paper

Randomization techniques for the intensity modulation-based quantum stream cipher and progress of experiment

Kentaro Kato, Osamu Hirota

Proceedings Volume 8163, 81630A (2011) https://doi.org/10.1117/12.893156

KEYWORDS: Modulation, Information security, Quantum communications, Computer security, Current controlled current source, Receivers, Quantum cryptography, Quantum information, Cryptography, Fiber optic communications

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Proceedings Article | 26 August 2009 Paper

Paper

Error performance of intensity modulation-based quantum stream cipher by Yuen 2000 protocol with nonlinear pseudorandom number generator

Kentaro Kato

Proceedings Volume 7465, 74650A (2009) https://doi.org/10.1117/12.825798

KEYWORDS: Modulation, Probability theory, Quantum physics, Quantum communications, Current controlled current source, Detection theory, Complex systems

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Proceedings Article | 5 September 2008 Paper

Paper

A quantum stream cipher by Yuen 2000 protocol with nonlinear random number generator

Kentaro Kato, Osamu Hirota

Proceedings Volume 7092, 70920H (2008) https://doi.org/10.1117/12.794584

KEYWORDS: Quantum communications, Nonlinear optics, Data transmission, Complex systems, Optical networks, Computer security

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Proceedings Article | 25 September 2007 Paper

Paper

Quantum stream cipher: Part V. On the optimal modulation scheme and the implementation of deliberate signal randomization

Kentaro Kato, Osamu Hirota

Proceedings Volume 6710, 67100T (2007) https://doi.org/10.1117/12.733296

KEYWORDS: Phase shift keying, Modulation, Quadrature amplitude modulation, Signal detection, Quantum information, Binary data, Signal attenuation, Numerical simulations, Receivers, Quantum cryptography

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Proceedings Article | 29 August 2006 Paper

Paper

Quantum stream cipher Part IV: Effects of the deliberate signal randomization and the deliberate error randomization

Kentaro Kato, Osamu Hirota

Proceedings Volume 6305, 630508 (2006) https://doi.org/10.1117/12.680013

KEYWORDS: Binary data, Signal detection, Information security, Receivers, Modulators, Quantum information, Quantum cryptography, Modulation, Quantum physics, Interference (communication)

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Proceedings Article | 19 August 2005 Paper

Paper

Quantum quadrature amplitude modulation system and its applicability to coherent-state quantum cryptography

Kentaro Kato, Osamu Hirota

Proceedings Volume 5893, 589303 (2005) https://doi.org/10.1117/12.618719

KEYWORDS: Quadrature amplitude modulation, Receivers, Quantum cryptography, Binary data, Phase shift keying, Quantum physics, Signal attenuation, Photons, Detection theory, Signal detection

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Proceedings Article | 1 June 2005 Paper

Paper

A quantum symmetric key cipher (Y-00) and key generation (Quantum stream cipher-Part II)

Osamu Hirota, Kentaro Kato, Masaki Sohma, Masaru Fuse

Proceedings Volume 5833, (2005) https://doi.org/10.1117/12.620487

KEYWORDS: Information security, Computer security, Probability theory, Quantum cryptography, Quantum communications, Cryptography, Quantum information, Quantum physics, Modulation, Binary data

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Proceedings Article | 19 October 2004 Paper

Paper

Quantum stream cipher based on optical communications

Osamu Hirota, Kentaro Kato, Masaki Sohma, Tsuyoshi Usuda, Katsuyoshi Harasawa

Proceedings Volume 5551, (2004) https://doi.org/10.1117/12.561778

KEYWORDS: Information security, Modulation, Cryptography, Quantum cryptography, Quantum communications, Receivers, Quantum information, Computer security, Quantum physics, Optical communications

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Proceedings Article | 3 February 2004 Paper

Paper

Quantum key distribution with unconditional security for all optical fiber network

Osamu Hirota, Kentaro Kato, Masaki Shoma, Tsuyoshi Usuda

Proceedings Volume 5161, (2004) https://doi.org/10.1117/12.504978

KEYWORDS: Information security, Quantum information, Telecommunications, Quantum communications, Modulation, Quantum physics, Network security, Receivers, Computer security, Quantum key distribution

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Showing 5 of 20 publications

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