Title:
LIGHT SOURCE DEVICE AND OPTICAL TOMOGRAPHY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/215479
Kind Code:
A1
Abstract:
A quantum entanglement photon pair source (4A) is provided with a Sagnac interferometer (40). The Sagnac interferometer (40) includes a beam splitter (401) and a QPM element (406). The beam splitter (401) divides pumping light supplied from the outside of the Sagnac interferometer (40) into first pumping light and second pumping light. The QPM element (406) in which a ridge-type waveguide (WG) is disposed generates a first quantum entanglement photon pair set in a frequency entanglement state from the first pumping light, and generates a second quantum entanglement photon pair set in a frequency entanglement state from the second pumping light. The beam splitter (401) generates quantum interference through integration of the first quantum entanglement photon pair and the second quantum entanglement photon pair, and emits a signal photon and an idler photon in different directions.
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Inventors:
TAKEUCHI SHIGEKI (JP)
OKAMOTO RYO (JP)
CAO BO (JP)
OKAMOTO RYO (JP)
CAO BO (JP)
Application Number:
PCT/JP2021/016201
Publication Date:
October 28, 2021
Filing Date:
April 21, 2021
Export Citation:
Assignee:
UNIV KYOTO (JP)
International Classes:
G01N21/17; G02F3/00; G02F1/21; G02F1/39
Domestic Patent References:
| WO2009025195A1 | 2009-02-26 | |||
| WO2010140661A1 | 2010-12-09 |
Foreign References:
| US20180231869A1 | 2018-08-16 | |||
| US20100309469A1 | 2010-12-09 | |||
| JP2011075889A | 2011-04-14 | |||
| JP2005266334A | 2005-09-29 | |||
| JP2007114464A | 2007-05-10 | |||
| JP2011013348A | 2011-01-20 | |||
| JP2005258232A | 2005-09-22 |
Other References:
ARAHIRA SHIN, NAOTO NAMEKATA, TADASHI KISHIMOTO, HIROKI YAEGASHI, AND SHUICHIRO INOUE: "Generation of polarization entangled photon pairs at telecommunication wavelength using cascaded X (2) processes in a periodically poled LiNb03 ridge waveguide", OPTICS EXPRESS, 15 August 2011 (2011-08-15), pages 16032 - 16043, XP055868197, Retrieved from the Internet [retrieved on 20211201]
CAO BO; OKAMOTO RYO; HISAMITSU MAMORU; TOKUDA KATSUHIKO; TAKEUCHI SHIGEKI: "Highly Efficient Ultra-Broadband Entangled Photon-Pair Generation using a Chirped PPSLT Ridge Waveguide", 2019 CONFERENCE ON LASERS AND ELECTRO-OPTICS EUROPE & EUROPEAN QUANTUM ELECTRONICS CONFERENCE (CLEO/EUROPE-EQEC), IEEE, 23 June 2019 (2019-06-23), pages 1 - 1, XP033633020, DOI: 10.1109/CLEOE-EQEC.2019.8873117
STUART TERENCE E, SLATER JOSHUA A, BUSSIERES FELIX, TITTEL WOLFGANG: "A Flexible Source of Non-Degenerate Entangled Photons Based on a Two-Crystal Sagnac Interferometer", PHYSICAL REVIEW A, 8 July 2013 (2013-07-08), XP055868200, Retrieved from the Internet [retrieved on 20211201], DOI: 10.1103/PhysRevA.88.012301
KWIAT, PAUL G. ET AL.: "Ultrabright source of polarization-entangled photons", PHYSICAL REVIEW A, vol. 60, no. 2, August 1999 (1999-08-01), pages R773 - R776, XP002298246, DOI: 10.1103/PhysRevA.60.R773
TAKEUCHI, SHIGEKI: "Quantum Metrology using Photons -Present and Future-", SUMMARIES OF THE 73RD ANNUAL CONFERENCE OF THE PHYSICAL SOCIETY OF JAPAN, 25 March 2018 (2018-03-25), pages 1213 - 1214
KIM T, FIORENTINO M, WONG F N C: "Phase-stable source of polarization-entangled photons using a polarization Sagnac interferometer", PHYSICAL REVIEW A (ATOMIC, MOLECULAR, AND OPTICAL PHYSICS), AMERICAN PHYSICAL SOCIETY, USA, vol. 73, 1 January 2006 (2006-01-01), USA , pages 012316 - 1, XP003017629, ISSN: 1050-2947, DOI: 10.1103/PhysRevA.73.012316
ARAHIRA SHIN, TADASHI KISHIMOTO, AND HITOSHI MURAI: "1.5-um band polarization entangled photon-pair source with variable Bell states", OPTICS EXPRESS, 23 April 2012 (2012-04-23), pages 9862 - 9875, XP055868207, [retrieved on 20211201]
TANAKA AKIRA, OKAMOTO RYO, LIM HWAN HONG, SUBASHCHANDRAN SHANTHI, OKANO MASAYUKI, ZHANG LABAO, KANG LIN, CHEN JIAN, WU PEIHENG, HI: "Noncollinear parametric fluorescence by chirped quasi-phase matching for monocycle temporal entanglement", OPTICS EXPRESS, vol. 20, no. 23, 5 November 2012 (2012-11-05), pages 25228 - 25238, XP055868209, DOI: 10.1364/OE.20.025228
UENO WAKANA, FUMIHIRO KANEDA,1 HIROFUMI SUZUKI,1 SHIGEHIRO NAGANO,1 ATSUSHI SYOUJI,1 RYOSUKE SHIMIZU,2 KOJI SUIZU,3 AND KEIICHI ED: "Entangled photon generation in two-period quasi-phase- matched parametric down-conversion", OPTICS EXPRESS, 27 February 2012 (2012-02-27), pages 5508 - 5517, XP055868211, Retrieved from the Internet [retrieved on 20211201]
CAO BO; OKAMOTO RYO; HISAMITSU MAMORU; TOKUDA KATSUHIKO; TAKEUCHI SHIGEKI: "Highly Efficient Ultra-Broadband Entangled Photon-Pair Generation using a Chirped PPSLT Ridge Waveguide", 2019 CONFERENCE ON LASERS AND ELECTRO-OPTICS EUROPE & EUROPEAN QUANTUM ELECTRONICS CONFERENCE (CLEO/EUROPE-EQEC), IEEE, 23 June 2019 (2019-06-23), pages 1 - 1, XP033633020, DOI: 10.1109/CLEOE-EQEC.2019.8873117
STUART TERENCE E, SLATER JOSHUA A, BUSSIERES FELIX, TITTEL WOLFGANG: "A Flexible Source of Non-Degenerate Entangled Photons Based on a Two-Crystal Sagnac Interferometer", PHYSICAL REVIEW A, 8 July 2013 (2013-07-08), XP055868200, Retrieved from the Internet
KWIAT, PAUL G. ET AL.: "Ultrabright source of polarization-entangled photons", PHYSICAL REVIEW A, vol. 60, no. 2, August 1999 (1999-08-01), pages R773 - R776, XP002298246, DOI: 10.1103/PhysRevA.60.R773
TAKEUCHI, SHIGEKI: "Quantum Metrology using Photons -Present and Future-", SUMMARIES OF THE 73RD ANNUAL CONFERENCE OF THE PHYSICAL SOCIETY OF JAPAN, 25 March 2018 (2018-03-25), pages 1213 - 1214
KIM T, FIORENTINO M, WONG F N C: "Phase-stable source of polarization-entangled photons using a polarization Sagnac interferometer", PHYSICAL REVIEW A (ATOMIC, MOLECULAR, AND OPTICAL PHYSICS), AMERICAN PHYSICAL SOCIETY, USA, vol. 73, 1 January 2006 (2006-01-01), USA , pages 012316 - 1, XP003017629, ISSN: 1050-2947, DOI: 10.1103/PhysRevA.73.012316
ARAHIRA SHIN, TADASHI KISHIMOTO, AND HITOSHI MURAI: "1.5-um band polarization entangled photon-pair source with variable Bell states", OPTICS EXPRESS, 23 April 2012 (2012-04-23), pages 9862 - 9875, XP055868207, [retrieved on 20211201]
TANAKA AKIRA, OKAMOTO RYO, LIM HWAN HONG, SUBASHCHANDRAN SHANTHI, OKANO MASAYUKI, ZHANG LABAO, KANG LIN, CHEN JIAN, WU PEIHENG, HI: "Noncollinear parametric fluorescence by chirped quasi-phase matching for monocycle temporal entanglement", OPTICS EXPRESS, vol. 20, no. 23, 5 November 2012 (2012-11-05), pages 25228 - 25238, XP055868209, DOI: 10.1364/OE.20.025228
UENO WAKANA, FUMIHIRO KANEDA,1 HIROFUMI SUZUKI,1 SHIGEHIRO NAGANO,1 ATSUSHI SYOUJI,1 RYOSUKE SHIMIZU,2 KOJI SUIZU,3 AND KEIICHI ED: "Entangled photon generation in two-period quasi-phase- matched parametric down-conversion", OPTICS EXPRESS, 27 February 2012 (2012-02-27), pages 5508 - 5517, XP055868211, Retrieved from the Internet
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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