GB2529228B - An interference system and an interference method - Google Patents

An interference system and an interference method

Info

Publication number
GB2529228B
GB2529228B GB1414446.3A GB201414446A GB2529228B GB 2529228 B GB2529228 B GB 2529228B GB 201414446 A GB201414446 A GB 201414446A GB 2529228 B GB2529228 B GB 2529228B
Authority
GB
United Kingdom
Prior art keywords
interference
interference method
interference system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
GB1414446.3A
Other versions
GB2529228A (en
GB201414446D0 (en
Inventor
Yuan Zhiliang
Lucamarini Marco
Dynes James
Matthias Frohlich Bernd
James Shields Andrew
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Europe Ltd
Original Assignee
Toshiba Research Europe Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Research Europe Ltd filed Critical Toshiba Research Europe Ltd
Priority to GB1414446.3A priority Critical patent/GB2529228B/en
Publication of GB201414446D0 publication Critical patent/GB201414446D0/en
Priority to US14/824,380 priority patent/US9696133B2/en
Priority to JP2015159844A priority patent/JP6100846B2/en
Publication of GB2529228A publication Critical patent/GB2529228A/en
Application granted granted Critical
Publication of GB2529228B publication Critical patent/GB2529228B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/70—Photonic quantum communication
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/58—Random or pseudo-random number generators
    • G06F7/588—Random number generators, i.e. based on natural stochastic processes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/10084—Frequency control by seeding
    • H01S3/10092—Coherent seed, e.g. injection locking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/508—Pulse generation, e.g. generation of solitons
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
    • H04L9/0852—Quantum cryptography
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
    • H01S5/4006—Injection locking

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Computer Security & Cryptography (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
GB1414446.3A 2014-08-14 2014-08-14 An interference system and an interference method Active GB2529228B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1414446.3A GB2529228B (en) 2014-08-14 2014-08-14 An interference system and an interference method
US14/824,380 US9696133B2 (en) 2014-08-14 2015-08-12 Interference system and an interference method
JP2015159844A JP6100846B2 (en) 2014-08-14 2015-08-13 Interference system and interference method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1414446.3A GB2529228B (en) 2014-08-14 2014-08-14 An interference system and an interference method

Publications (3)

Publication Number Publication Date
GB201414446D0 GB201414446D0 (en) 2014-10-01
GB2529228A GB2529228A (en) 2016-02-17
GB2529228B true GB2529228B (en) 2017-08-02

Family

ID=51662432

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1414446.3A Active GB2529228B (en) 2014-08-14 2014-08-14 An interference system and an interference method

Country Status (1)

Country Link
GB (1) GB2529228B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11309970B2 (en) 2020-07-17 2022-04-19 Kabushiki Kaisha Toshiba Optical transmitter and a method for generating light pulses with variable intensity and variable phase without an optical modulator

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2540589B (en) * 2015-07-22 2018-08-08 Toshiba Res Europe Limited An interference system and a method of fabricating an interference system
US9696133B2 (en) 2014-08-14 2017-07-04 Kabushiki Kaisha Toshiba Interference system and an interference method
CN107317636B (en) * 2016-12-26 2018-10-02 科大国盾量子技术股份有限公司 A kind of light source and code device for quantum communication system
EP3679682B1 (en) * 2017-09-05 2021-09-22 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Device and method for generating a key
WO2019149383A1 (en) * 2018-02-05 2019-08-08 Telefonaktiebolaget Lm Ericsson (Publ) Quantum key distribution apparatus, system and method
CN108429616B (en) * 2018-02-11 2020-10-30 陈柱 Self-owned post quantum password distribution system
GB2578790B (en) 2018-11-09 2023-02-15 Toshiba Kk A reference Laser, plurality of first optical components, and a plurality of second optical components integrated laterally on a semiconductor substrate
GB2582311B (en) * 2019-03-18 2021-10-20 Toshiba Kk A quantum random number generator
CN110426863B (en) * 2019-07-01 2021-04-23 中国科学技术大学 Quantum random switch
US11079542B2 (en) * 2019-10-21 2021-08-03 Honeywell International Inc. Integrated photonics source and detector of entangled photons
US11199661B2 (en) 2019-10-21 2021-12-14 Honeywell International Inc. Integrated photonics vertical coupler
US11320720B2 (en) 2019-10-21 2022-05-03 Honeywell International Inc. Integrated photonics mode splitter and converter
GB2601171B (en) * 2020-11-20 2023-05-24 Toshiba Kk System and method to generate biased random bit streams and quantum communication system and method
GB2607106B (en) * 2021-05-28 2024-04-17 Toshiba Kk An emitter, communication system and method
GB2607105B (en) * 2021-05-28 2023-05-31 Toshiba Kk An optical emitter, communication system and method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060056469A1 (en) * 2002-09-25 2006-03-16 Dieter Huhse Method and device for generating an optical laser pulse
US20130036145A1 (en) * 2011-08-04 2013-02-07 Valerio Pruneri Ultrafast quantum random number generation process and system therefore

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060056469A1 (en) * 2002-09-25 2006-03-16 Dieter Huhse Method and device for generating an optical laser pulse
US20130036145A1 (en) * 2011-08-04 2013-02-07 Valerio Pruneri Ultrafast quantum random number generation process and system therefore

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
Kobayashi T et al, "Evaluation of the phase correlation between the optical pulses for transmission in quantum key distribution", Proc of Advances in Photonics of Quantum Computing, Memory, and Communication VII, 1 Feb 2014, p899707 *
Tang Z et al, "Experimental Demonstration of Polarization Encoding Measurement-Device-Independent Quantum Key Distribution", arXiv:1306.6134v2 [quant-ph], 24 July 2013 *
Yuan, Z, L et al, "Robust random number generation using steady-state emission of gain-switched laser diodes", arXiv:1407.0933v1 [quant-ph], 3 Jul 2014. *
Yun-Cai Wang & An-Bang Wang, "Generation of low jitter single mode ultrashort optical pulse at arbitrary repetition rate", Microwave and Optical Technology Letters, Feb 2007, pp447-450 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11309970B2 (en) 2020-07-17 2022-04-19 Kabushiki Kaisha Toshiba Optical transmitter and a method for generating light pulses with variable intensity and variable phase without an optical modulator

Also Published As

Publication number Publication date
GB2529228A (en) 2016-02-17
GB201414446D0 (en) 2014-10-01

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