研究業績

受賞

  • 2008年4月 第24会応用物理学会講演奨励賞
    笹倉弘理, 足立智, 鍜治怜奈, 武藤俊一
    「核磁場の双安定現象を利用したInAlAs量子ドットの判別」
  • 2015年9月 第76回 応用物理学会秋季学術講演会 Poster Award
    笹倉弘理
    「First-order single photon interference in unblanced Mach-Zehender interferometer naturally formed by QDinF」

投稿論文発表(Paper) [2000-2015]

2015年

  1.     Hirotaka Sasakura, Shunichi Muto, and Hidekazu Kumano : “Single photon interference between bidirectionally extracted photons originating from semiconductor quantum dots”, Applied Physics Express 8, 112002-1/4 (2015).

2014年

  1.     Reina Kaji, Takahito Hozumi, Yuta Hachiyama, Takuma Tomii, Hirotaka Sasakura, Masafumi Jo and Satoru Adachi, : “Dispersions of hole and electron g-factors in single InAs quantum rings evaluated using optically induced nuclear spin polarization”, Applied Physics Express 7, 065002-1/3 (2014).
  2.     Ryotaro Inoue, Hideaki Takayanagi, Tatsushi Akazaki, Kazunori Tanaka, Hirotaka Sasakura and Ikuo Suemune : “Carrier flow and nonequilibrium superconductivity in superconductor-based LEDs”, Applied Physics Express 7, 073101-1/4 (2014).

2013年

  1.     Hirotaka Sasakura, Liu Xiaming, Satoru Odashima, Hidekazu Kumano, Shunichi Muto, : “Fiber-based bidirectional single photon emitter based on semiconductor quantum dot”, Applied Physics Express 6, 065203-1/3 (2013).
  2.     Suemune I, Nakajima H, Liu X, Odashima S, Asano T, Iijima H, Huh JH, Idutsu Y, Sasakura H, Kumano H. : “Metal-coated semiconductor nanostructures and simulation of photon extraction and coupling to optical fibers for solid-state single-photon source”, Nanotechnology 24, 455205/1-9 (2013).
  3.     Nahid A. Jahan, Claus Hermannstadter, Jae-Hoon Huh, Hirotaka Sasakura, Thomas J. Rotter, Pankaj Ahirwar, Ganesh Balakrishnan, Kouichi Akahane, Masahide Sasaki, Hidekazu Kumano, and Ikuo Suemune : “Temperature dependent carrier dynamics in telecommunication band InAs quantum dots and dashes grown on InP substrates”, Journal of Applied Physics 113, 033506-1.6 (2013).
  4.     Nahid A. Jahan, Claus Hermannstadter, Hirotaka Sasakura, Thomas J. Rotter, Pankaj Ahirwar, Ganesh Balakrishnan, Hidekazu Kumano and Ikuo Suemune : “Carrier dynamics and photoluminescence quenching mechanism of strained InGaSb/AlGaSb quantum wells”, Journal of Applied Physics 113, 053505-1/6 (2013).

2012年

  1.     R. Kaji, S. Adachi, H. Sasakura, and S. Muto: “Direct observation of nuclear field fluctuations in single quantum dots”, Physical Review B 85, 155315/1-6 (2012).
  2.     H. Sasakura, C. Hermannstadter, S. N. Dorenbos, N. Akopian, M. P. van Kouwen, J. Motohisa, Y. Kobayashi, H. Kumano, K. Kondo, K. Tomioka, T. Fukui, I. Suemune, ans V. Zwiller: “Longitudinal and transverse exciton-spin relaxation in a single InAsP quantum dot embedded inside a standing InP nanowire using photoluminescence spectroscopy”, Physical Review B 85, 075324/1-7 (2012).
  3.     C. Hermannstadter, N. A. Jahan, J-H. Huh, H. Sasakura, K. Akahane, M. Sasaki, and I. Suemune: “Inter-dot coupling and excitation transfer mechanisms of telecommunication band InAs quantum dots at elevated temperatures”, New Journal of Physics 14, 023037/1-19 (2012).
  4.     I. Suemune, H. Sasakura, Y. Hayashi, K. Tanaka, Y. Asano, R. Inoue, H. Takayanagi, E. Hanamura, J-H. Huh, C. Hermannstadter, S. Odashima, H. Kumano, “Cooper-pair Radiative Recombination in Semiconductor Heterostructures: Impact on Quantum Optics and Optoelectronics”, Japanese Journal of Applied Physics 51, 010114/1-10 (2012).

2011年

  1.     H. Sasakura, S. Kuramitsu, Y. Hayashi, K. Tanaka, T. Akazaki, E. Hanamura, R. Inoue, H. Takayanagi, Y. Asano, C. Hermannstadter, H. Kumano, and I. Suemune: “Enhanced photon generation in a Nb/n-InGaAs/p-InP superconductor/semiconductor-diode light emitting device”, Physical Review Letters 107, 157403-1-5 (2011).
  2.     S. Ohno, S. Adachi, R. Kaji, S. Muto, and H. Sasakura: “Optical anisotropy and photoluminescence polarization in single InAlAs quantum dots”, Applied Physics Letters 98, 161912/1-3 (2011).
  3.     H. Kumano, K. Matsuda, S. Ekuni, H. Sasakura, and I. Suemune: “Characterization of two-photon polarization mixed states generated from entangled-classical hybrid photon source”, Opt. Express, 19, 14249-14259 (2011).
  4.     J-H Huh, C. Hermannstadter, H. Sato, S. Ito, Y. Idutsu, H. Sasakura, K. Tanaka, T. Akazaki, and I. Suemune: Precise slit-width control of niobium apertures for superconducting LEDs”, Nanotechnology 22, 045302/1-7 (2011).
  5.     J-H Huh, C. Hermannstadter, K. Akahane, H. Sasakura, N-A Jahan, M. Sasaki, and I. Suemune: “Fabrication of Metal Embedded Nano-Cones for Single Quantum Dot Emission”, Japanese Journal of Applied Physics 50, 06GG02/1-5 (2011).

2010年

  1.     S. N. Dorenbos, H. Sasakura, M. P. van Kouwen, N. Akopian, S. Adachi, N. Namekata, M. Jo, J. Motohisa, Y. Kobayashi, K. Tomioka, T. Fukui, S. Inoue, H. Kumano, C. M. Natarajan, R. H. Hadfield, T. Zijlstra, T. M. Klapwijk, V. Zwiller, and I. Suemune: “Position controlled nanowires for infrared single photon emission”, Appl. Phys. Lett., 97, 171106 (2010).
  2.     H. Kumano, H. Nakajima, S. Ekuni, Y. Idutsu, H. Sasakura, and I. Suemune: “Quantum-dot-based photon emission and media conversion for quantum information applications”, Adv. Math. Phys. 2010, Article ID 391607-1-14 (2010).
  3.     S. Ekuni, H. Nakajima, H. Sasakura, I. Suemune, and H. Kumano: “First-order photon interference of a single photon from a single quantum dot”, Physica E, 42, 2536-2539 (2010).
  4.     I. Suemune, Y. Hayashi, S. Kuramitsu, K. Tanaka, T. Akazaki, H. Sasakura, R. Inoue, H. Takayanagi, Y. Asano, E. Hanamura, S. Odashima, and H. Kumano: “A Cooper-Pair Light-Emitting Diode: Temperature Dependence of Both Quantum Efficiency and Radiative Recombination Lifetime”, Appl. Phys. Express 3, 054001 (2010).

2009年

  1.     H. Sasakura, H. Kumano, I. Suemune, J. Motohisa, Y. Kobayashi, M. van Kouwen, K. Tomioka, T. Fukui, N. Akopian, and V. Zwiller: “Exciton Coherence in Clean Single InP/InAsP/InP Nanowire Quantum Dots Emitting in Infra-red Measured by Fourier Spectroscopy” J. Phys. 193, 012132-1-4 (2009).
  2.     H. Sasakura, S. Adachi, R. Kaji, K. Yamada, and S. Muto: “Zero effective electron g-factor of QD realized by optically induced nuclear field”, phys. stat. sol (b) 246, 784-787 (2009).
  3.     H. Kumano, S. Ekuni, H. Kobayashi, H. Sasakura, I. Suemune, S. Adachi, and S. Muto: “Spin-flip quenching in trion state mediated by optical phonons in a single quantum dot”, phys. stat. sol (b) 246, 775-778 (2009).

2008年

  1.     H. Sasakura, R. Kaji, S. Adachi, and S. Muto: “Discrimination of quantum dots using an optically created nuclear field”, Applied Physics Letters 92, 041915/1-3 (2008).
  2.     H. Sasakura, S. Adachi, S. Muto, S. Hirose, H. Z. Song, M. Takatsu: “Nuclear and excitonic spin polarization formed using cross-linearly polarized pulse pair via half-localized state in a single self-assembled quantum dot”, Journal of Applied Physics 103, 103530-1/5 (2008).
  3.     R. Kaji, S. Adachi, H. Sasakura, and S. Muto: “Hysteretic response of the electron-nuclear spin system in single InAlAs quantum dots: Dependences on excitation power and polarization”, Physical Review B 77, 115345/1-5 (2008).
  4.     R. Kaji, K. Yamada, H. Sasakura, and S. Adachi: “Optical evaluation of electron and hole g factors in single quantum dots”, physica status solidi (b) 245, 2662-2666 (2008).
  5.     H. Kumano, H. Kobayashi, S. Ekuni, Y. Hayashi, M. Jo, H. Sasakura, S. Adachi, S. Muto, and I. Suemune: “Excitonic spin-state preservation mediated by optical-phonon resonant excitation in a single quantum dot”, Phys. Rev. B 78, 081306-1-4 (R) (2008).
  6.     H. Kumano, H. Kobayashi, Y. Hayashi, M. Jo, I. Suemune, H. Sasakura, S. Adachi, and S. Muto: “Single photon emission with high degree of circular polarization from a single quantum dot under zero magnetic field”, Physica E 40 1824-1827 (2008).

2007年

  1.     H. Sasakura, S. Kayamori, S. Adachi, and S. Muto: “Effect of indium-flush method on the control of photoluminescence energy of highly uniform self-assembled InAs quantum dots by slow molecular beam epitaxy growth”, Journal of Applied physics 102, 013515-1/4 (2007).
  2.     S. Adachi, N. Yatsu, R. Kaji, S. Muto, H. Sasakura: “Decoherence of exciton complexes in single InAlAs quantum dots measured by Fourier spectroscopy “, Applied Physics Letters 91, 161910-1/3 (2007).
  3.     R. Kaji, S. Adachi, H. Sasakura, and S. Muto: “Precise measurements of electron and hole g-factors of single quantum dots by using nuclear field”, Applied Physics Letters 91, 261904/1-3 (2007).
  4.     R. Kaji, S. Adachi, H. Sasakura, S. Muto, H. Kumano, and I. Suemune: “Detailed measurements of nuclear spin polarizations in a single InAlAs quantum dot through Overhauser shift of photoluminescence”, Journal of Superconductivity and Novel Magnetism 20, 447-451 (2007).
  5.     H. Z. Song, M. Takatsu, H. Sasakura, S. Muto, N. Yokoyama: “Characterization of exciton states in coupled InAlAs/AlGaAs quantum dot pairs”, Physics Letters A 368, 92-96 (2007).

2006年

  1.     H. Z. Song, T. Usuki, Y. Nakata, N. Yokoyama, H. Sasakura, S. Muto: “Formation of InAs/GaAs quantum dots from a subcritical InAs wetting layer: A reflection high-energy electron diffraction and theoretical study”, Physical Review B 73, 115327-1/8 (2006).
  2.     H. Kumano, S. Kimura, M. Endo, H. Sasakura, S. Adachi, S. Muto, and I. Suemune: “Deterministic single-photon and polarization-correlated photon pair generations from a single InAlAs quantum dot”, J. Nanoelectron. Optoelectron. 1, 39-51 (2006).
  3.     H. Kumano, S. Kimura, M. Endo, I. Suemune, H. Sasakura, S. Adachi, S. Muto, H. Z. Song, S. Hirose, and T. Usuki: “Triggered single-photon emission and cross-correlation properties in InAlAs quantum dot”, Physica E 32, 144-147 (2006).
  4.     H. Z. Song, T. Usuki, Y. Nakata, N. Yokoyama, H. Sasakura, S. Muto: “Mechanism of Quantum Dot Formation by Postgrowth Annealing of Wetting Layer”, Japanese Journal of Applied Physics 45, 3564-3567 (2006).

2005年

  1.     T. Yokoi, S. Adachi, H. Sasakura, S. Muto, H. Z. Song, T. Usuki, S. Hirose: “Polarization-dependent shift in excitonic Zeeman splitting of self-assembled InAlAs quantum dots”, Physical Review B 71 R041307-1/4 (2005).
  2.     T. Watanuki, S. Adachi, H. Sasakura, S. Muto: “Long spin relaxation in self-assembled InAlAs quantum dots observed by heterodyne four-wave mixing”, Applied Physics Letters 86, 063114/1-3 (2005).
  3.     S. Muto, S. Adachi, T. Yokoi, H. Sasakura, I. Suemune: “Photon-spin qubit-conversion based on Overhauser shift of Zeeman energies in quantum dots”, Applied Physics Letters 87, 112506-1/3 (2005).
  4.     T. Yokoi, S. Adachi, H. Sasakura, S. Muto, H. Z. Song, T. Usuki, S. Hirose: “Observation of Overhauser shift in a self-assembled InAlAs quantum dot”, Physica E 29, 510-514 (2005).
  5.     S. Kimura, H. Kumano, M. Endo, I, Suemune, T. Yokoi, H. Sasakura, S. Adachi, S. Muto, H. Z. Song, S. Hirose, and T. Usuki: “Photon antibunching observed from an InAlAs single quantum dot” Jpn. J. Appl. Phys. 44, L793-L796 (2005).

2004年

  1.     H. Sasakura, S. Adachi, S. Muto, H. Z. Song, T. Miyazawa, T. Usuki: “Spin depolarization via tunneling effects in asymmetric double quantum dot structure”, Japanese Journal of Applied Physics 43, 2110-2113 (2004)
  2.     H. Sasakura, S. Adachi, S. Muto, T. Usuki, M. Takatsu: “Coulomb interaction in asymmetric triple-coupled quantum dots:, Semiconductor Science and Technology 19/4, S409-S411 (2004).
  3.     H. Sasakura, S. Adachi, S. Muto, H. Z. Song, T. Miyazawa, Y. Nakata: “Carrier tunneling in asymmetric coupled quantum dots”, Physica E 21/2-4, 511-515 (2004).

2003年

  1.     H. Sasakura, S. Adachi, S. Muto: “Quantum gates based on Electron spins of triple quantum dot”, Japanese Journal of Applied Physics 42, 6308-6313 (2003).
  2.     S. Adachi, H. Sasakura, S. Muto, K. Hazu, T. Sota, S. F. Chichibu, T. Mukai: “Exciton-exciton correlation effects on FWM in GaN”, physica status solidi (b) 240/2, 348-351 (2003).
  3.     O. Ikeuchi, S. Adachi, H. Sasakura, S. Muto: “Observation of population transfer to dark exciton states by using spin-diffracted four-wave mixing”, Journal of Applied Physics 93, 9634-9638 (2003).

2002年-2000年

  1.     S. Muto, H. Sasakura, S. Adachi, Y. Kajiwara, K. Shiramine: “Quantum gates using tunneling electron spin in a quantum-dot chain”, Physica E 13, 616-619 (2002).
  2.     H. Sasakura, S. Muto, T. Ohshima: “Quantum gates using spin states of triple quantum dot”, Physica E 10/1-3, 458-462 (2001).
  3.     S. Itoh, S. Muto, Y. Ebiko, H. Sasakura, K. Shiramine: “Exchange Interaction of Optically Created Electrons in Coupled Quantum Dots”, Japanese Journal of Applied Physics 38, L917-919 (1999).

国際会議論文(Proceeding)

  1.     H. Nakajima, S. Ekuni, H. Kumano, Y. Idutsu, S. Miyamura, D. Kato, S. Ida, H. Sasakura, and I. Suemune: “Strongly suppressed multi-photon generation from a single quantum dot in a metal-embedded structure”, physica status solidi (c) 8, 337 (2011)
  2.     H. Sasakura, S. Adachi, R. Kaji, and S. Muto: “Formation of nanoscale magnetic field by nuclear spin polarization in individual quantum dots”, physica status solidi (c) 6, 837-840 (2009). Also back cover of proceeding book
  3.     S. Adachi, H. Sasakura, N. Yatsu, R. Kaji, K. Yamada, S. Muto, H. Kumano, I. Suemune: “Fourier spectroscopy of decoherence of exciton and exciton complexes in single InAlAs quantum dots”, physica status solidi (c) 5, 351-355 (2008)
  4.     R. Kaji, H. Sasakura, S. Adachi, and S. Muto: “Excitation power dependence of optically pumped nuclear spin polarizations in single InAlAs QDs”, physica status solidi (c) 5, 298-301 (2008)
  5.     H. Kobayashi, H. Kumano, M. Endo, M. Jo, I. Suemune, H. Sasakura, S. Adachi, and S. Muto: “Highly circular-polarized single photon generation from a single quantum dot at zero magnetic field”, Microelectronics Journal 39, 327-300 (2008)
  6.     T. Mukumoto, R. Kaji, H. Sasakura, S. Adachi, H. Kumano, S. Muto, and I. Suemune: “Overhauser shift in photoluminescence of excitons with fine structure from a single self-assembled InAlAs quantum dot”, physica status solidi (c) 3, 4372-4375 (2006)
  7.     S. Abe, H. Sasakura, S. Adachi, S. Muto: “Stimulated Raman adiabatic passage for the photon-assisted tunneling in a double quantum dot”, physica status solidi (c) 3, 4295-4298 (2006)
  8.     H. Nishida, S. Kayamori, H. Sasakura, S. Adachi, S. Muto, I. Suemune: “Time-resolved photoluminescence in annealed self-assembled InAs quantum dots”, physica status solidi (c) 3, 4299-4302 (2006)

総説・解説(Japanese)

  1.     量子ドットを用いた量子計算, 武藤俊一, 足立智, 笹倉弘理, 電子情報通信学会誌 91巻11号 , 931-939 (2008).
  2.     核スピンを光で見る・操作する-半導体量子ドットの動的核偏極, 笹倉弘理, 鍜治怜奈, 足立智, 武藤俊一, 日本物理学会誌 第65巻 第4号, 247-251 (2010).
  3.     量子情報通信のための単一光子・量子もつれ光子対光源, 末宗幾夫, 熊野英和, 笹倉弘理, 光学第40巻9号 472-477 (2011).