GB2540589B - An interference system and a method of fabricating an interference system - Google Patents

An interference system and a method of fabricating an interference system

Info

Publication number
GB2540589B
GB2540589B GB1512928.1A GB201512928A GB2540589B GB 2540589 B GB2540589 B GB 2540589B GB 201512928 A GB201512928 A GB 201512928A GB 2540589 B GB2540589 B GB 2540589B
Authority
GB
United Kingdom
Prior art keywords
interference system
fabricating
interference
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
GB1512928.1A
Other versions
GB201512928D0 (en
GB2540589A (en
Inventor
James Sheilds Andrew
Krystyna Skiba-Szymanska Joanna
Matthias Frohlich Bernd
Yuan Zhiliang
Lucamarini Marco
Dynes James
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 GB1512928.1A priority Critical patent/GB2540589B/en
Priority to US14/824,380 priority patent/US9696133B2/en
Priority to JP2015159844A priority patent/JP6100846B2/en
Publication of GB201512928D0 publication Critical patent/GB201512928D0/en
Publication of GB2540589A publication Critical patent/GB2540589A/en
Application granted granted Critical
Publication of GB2540589B publication Critical patent/GB2540589B/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
    • H04B10/50—Transmitters
    • H04B10/508—Pulse generation, e.g. generation of solitons
    • 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
    • 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
    • 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)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
GB1512928.1A 2014-08-14 2015-07-22 An interference system and a method of fabricating an interference system Active GB2540589B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1512928.1A GB2540589B (en) 2015-07-22 2015-07-22 An interference system and a method of fabricating an interference system
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
GB1512928.1A GB2540589B (en) 2015-07-22 2015-07-22 An interference system and a method of fabricating an interference system

Publications (3)

Publication Number Publication Date
GB201512928D0 GB201512928D0 (en) 2015-09-02
GB2540589A GB2540589A (en) 2017-01-25
GB2540589B true GB2540589B (en) 2018-08-08

Family

ID=54064780

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1512928.1A Active GB2540589B (en) 2014-08-14 2015-07-22 An interference system and a method of fabricating an interference system

Country Status (1)

Country Link
GB (1) GB2540589B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
ES2861512B2 (en) * 2020-04-03 2022-12-30 Univ Vigo Quantum Random Number Generator
GB2617351A (en) 2022-04-05 2023-10-11 Wave Photonics Ltd Method and apparatus for generating a quantum cryptographic key
GB2621320A (en) * 2022-08-02 2024-02-14 Toshiba Kk Optical transmitter for a Quantum Key Distribution system
CN116125724B (en) * 2023-04-14 2023-06-16 合肥硅臻芯片技术有限公司 Quantum light pulse generating device and method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997030527A1 (en) * 1996-02-16 1997-08-21 British Telecommunications Public Limited Company Optical pulse source
US20130036145A1 (en) * 2011-08-04 2013-02-07 Valerio Pruneri Ultrafast quantum random number generation process and system therefore
GB2505902A (en) * 2012-09-13 2014-03-19 Univ Southampton Destructively interfering the output of a modulated slave laser with a signal derived from a master laser to achieve carrier suppression
GB2529228A (en) * 2014-08-14 2016-02-17 Toshiba Res Europ Ltd An interference system and an interference method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997030527A1 (en) * 1996-02-16 1997-08-21 British Telecommunications Public Limited Company Optical pulse source
US20130036145A1 (en) * 2011-08-04 2013-02-07 Valerio Pruneri Ultrafast quantum random number generation process and system therefore
GB2505902A (en) * 2012-09-13 2014-03-19 Univ Southampton Destructively interfering the output of a modulated slave laser with a signal derived from a master laser to achieve carrier suppression
GB2529228A (en) * 2014-08-14 2016-02-17 Toshiba Res Europ Ltd An interference system and an interference method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Electronics Letters; Volume 32, Issue 1; 4th January 1996 (IET); D-S Seo, D Y Kim, H-F Liu; "Timing jitter reduction of gain-switched DFB laser by external injection-seeding"; Pages 44-45 *

Also Published As

Publication number Publication date
GB201512928D0 (en) 2015-09-02
GB2540589A (en) 2017-01-25

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