• 2016年~

    Tomoaki Kimura, Kodai Shiba, Chih-Chieh Chen, Masaru Sogabe, Katsuyoshi Sakamoto, Tomah Sogabe:”Quantum circuit architectures via quantum observable Markov decision process planning”Journal of Physics Communications, Vol. 6, No.7, 075006, DOI 10.1088/2399-6528/ac7d39 (2022/7/14)

  • Tomah Sogabe, Kodai Shiba, Katsuyoshi Sakamoto:‟Hydrodynamic and Energy Transport Model-Based Hot-Carrier Effect in GaAs pin Solar Cell” Electronic Materials, Vol.3, Issue2, DOI 10.3390/electronicmat3020016 (2022/5/11)


  • Kodai Shiba, Ryo Sugiyama, Koichi Yamaguchi, Tomah Sogabe:”Quantum Dot Phase Transition Simulation with Hybrid Quantum Annealing via Metropolis-Adjusted Stochastic Gradient Langevin Dynamics” Advances in Condensed Matter Physics, Volume 2022, Article ID 9711407(2022/4/11)

  • Tomoaki Kimura, Kodai Shiba, Chih-Chieh Chen , Masaru Sogabe, Katsuyoshi Sakamoto, Tomah Sogabe:‟Variational Quantum Circuit-Based Reinforcement Learning for POMDP and Experimental Implementation” Mathematical Problems in Engineering Volume21 Article ID 3511029 (2021/12/23)

  • Kodai Shiba, Chih-Chieh Chen, Masaru Sogabe, Katsuyoshi Sakamoto, Tomah Sogabe: ‟Quantum-Inspired Classification Algorithm from DBSCAN–Deutsch–Jozsa Support Vectors and Ising Prediction Model”,  Applied Sciences Volume11 Issue23 app112311386 (2021/12/1)

  • M. Tanaka, K. Banda, T. Sogabe and K. Yamaguchi, “InAs/GaAsSb In-Plane Ultrahigh-Density Quantum Dot Lasers”, Applied Physics Express 14, 124002 (2021)

  • Chih-Chieh Chen, Masaya Watabe, Kodai Shiba, Masaru Sogabe, Katsuyoshi Sakamoto, Tomah Sogabe:“On the Expressibility and Overfitting of Quantum Circuit Learning”, ACM Transactions on Quantum ComputingVolume 2Issue 2July 2021 Article No. 8 (2021)

  • T.Sogabe, C-Y. Hung, R.Tamaki, S.Tomic, K.Yamaguchi, N. Ekins-Daukes and Y. Okada, “Experimental demonstration of energy-transfer ratchet intermediate-band solar cell”, Communications  Physics  4, 38 (2021). nature).   (pdf file is available and is for academic use only)

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    Editor’s Highlightに選出:Editor’s Highlights – Communications Physics (

  • M. Watabe, K. Shiba, C-C. Chen, M. Sogabe, K. Sakamoto and T. Sogabe*, “Quantum Circuit Learning with Error Backpropagation Algorithm and Experimental Implementation”, Quantum Reports, Vol.3 (2) pp.333-349(2021), DOI: 10.3390/quantum3020021.

  • R. Suzuki, K. Terada, K. Sakamoto, T. Sogabe and K. Yamaguchi ,“ Low Sunlight Concentration Properties of InAs Ultrahigh-Density Quantum-Dot Solar Cells”, Jpn. J. Appl. Phys., 58, (2019) pp.071004 1-7.

  • R. Sugiyama, S. Tatsugi, T. Sogabe and K. Yamaguchi, “Optical Transition and Carrier Relaxation in a Type-II InAs/GaAsSb Quantum Dot Layer”, Japanese Journal of Applied Physics, Vol.58(1) pp.012004 1-5(2019), DOI: 10.7567/1347-4065/aae8ea.

  • A. Makaino, K. Sakamoto, T. Sogabe, S. Kobayashi and K. Yamaguchi, “Self-Formation of InAs Quantum Dots on SiOx/Semiconductor Substrates by Molecular Beam Deposition”, Applied Physics Express, Vol.11 (8) pp.085501 1-4(2018), DOI: 10.7567/APEX.11.085501.

  • Bernice Mae Yu Jeco, T.Sogabe, N. Ahsan, and Y. Okada, “Temperature Dependence of Luminescence Coupling Effect in InGaP/GaAs/Ge Triple Junction Solar Cells”  J. of Photonics for Energy, 8(2), 022602 (2018)

  • S. Oikawa, A. Makaino, T. Sogabe and K. Yamaguchi, “Growth process and Photoluminescence Properties of In-Plane Ultrahigh-Density InAs Quantum Dots on InAsSb/GaAs(001)”, Physica. Status Solidi B, Vol.255 (4) pp.1700307 1-5(2017). 

  • BMFY. Jeco, T. Sogabe, R. Tamaki, N. Ahsan, Y. Okada, “Impact of optically nonuniform luminescence coupling effect to the limiting cell conversion efficiency in InGaP/GaAs/Ge triple junction solar cell”, Journal of Photonics for Energy, Vol.7 (3) Article No. 035501 (2017), DOI:10.1117/1.JPE.7.035501.

  • E. López, A. Datas, I. Ramiro, P.G. Linares, E. Antolín, I. Artacho, A. Martí, A. Luque, Y. Shoji, T. Sogabe, A. Ogura, Y. Okada, “Demonstration of the operation principles of Intermediate Band Solar Cells at room temperature” , Sol. Energ. Mat. Sol. Solar Energy Materials and Solar Cells,149, 15, (2016),

  • T. Sogabe, Q. Shen, Y. Yamaguchi, “Recent progress on quantum dot solar cells: A review”, J. Photon. Energy. 6(4) 040901 (2016)

  • Chao-Yu Hung, Tomah Sogabe, Naoya Miyashita, and Yoshitaka Okada, ”Growth of ErAs nanodots by molecular beam epitaxy for application to tunneling junctions in multijunction solar cells”, Japanese Journal of Applied Phyisics, 55, 021201,(2016)

  • 2011年〜2016年

    G. Linares, E. López, I. Ramiro, A. Datas, E. Antolín, Y. Shoji, T. Sogabe, Y. Okada, A. Martí, and A. Luque,”Voltage limitation analysis in strain-balanced InAs/GaAsN quantum dot solar cells applied to the intermediate band concept”, Sol. Energ. Mat. Sol., 132, 178 (5 pages)(2015)

  • Datas, E. López, I. Ramiro, E. Antolín, A. Martí, A. Luque, R. Tamaki, Y. Shoji, T. Sogabe, and Y. Okada,” Intermediate Band Solar Cell with Extreme Broadband Spectrum Quantum Efficiency”, Phys. Rev. Lett. 114, 157701(4 pages) (2015) [selected as “Editorial Suggestion paper in Phys. Rev. Lett.]

  • López, A.Datas, I.Ramiro, P.G. Linares, E. Antolín, I. Artacho, A.Martí and A. Luque,Y. Shoji, T. Sogabe, A. Ogura and Y. Okada,” Demonstration of the operation principles of Intermediate Band Solar Cells at room temperature”, Sol. Energ. Mat. Sol., 149,15(4 pages) (2015)

  • C-Y. Hung, Sogabe, N.Miyashita, Y.Okada,”Growth of ErAs nanodots by molecular beam epitaxy for application to tunneling junctions in multijunction solar cells”, Jpn. J. Appl. Phys. 55 021201(7 pages) (2015)

  • Sogabe, A.Ogura, M.Ohba,Y. Okada, “Self-consistent electrical parameter extraction from bias dependent spectral response measurements of III-V multi-junction solar cells”, Prog. Photovolt: Res. Appl., 23, 37(12 pages)(2015)

  • Sogabe, Y.Shoji, P.Mulder, J.Schermer, E.Tamayo,Y.Okada, “Enhancement of current collection in epitaxial lift-off InAs/GaAs quantum dot thin film solar cell and concentrated photovoltaic study”, Appl. Phys. Lett. 105, 113904(4 pages) (2014)

  • Sogabe, Y.Shoji, M.Ohba, K.Yoshida, R.Tamaki, H-F. Hong, C-H. Wu, C-T. Kuo, S. Tomić, Y.Okada, ” Intermediate-band dynamics of quantum dots solar cell in concentrator photovoltaic modules “, Sci. Rep. (Nature Publishing Group), 4, 4792(7 pages) (2014)

  • Ogura, T.Sogabe, M.Ohba,Y.Okada, “Extraction of electrical parameters in multi-junction solar cells from voltage dependent spectral response without light bias”, Jpn J. Appl.Phys. 53, 066601 (5 pages)(2014)

  • Sogabe, A.Ogura, Y.Okada, “Analysis of bias voltage dependent spectral response in Ga0.51In0.49P/Ga0.99In0.01As/Ge triple junction solar cell”, J.Appl.Phys. 115, 7, 074503(7 pages) (2014)

  • Tomić, T.Sogabe*,Y.Okada, “In-plane coupling effect on absorption coefficients of InAs/GaAs quantum dots arrays for intermediate band solar cell”, Prog. Photovolt: Res. Appl., 23,546(13 pages)(2014) (Co-corresponding author)

  • Sogabe, T.Kaizu, Y.Okada,S.Tomić, “Theoretical analysis of GaAs/AlGaAs quantum dots in quantum wire array for intermediate band solar cell”, J. Renewable Sustainable Energy, 6, 011206(11 pages) (2014)

  • Sogabe, A.Ogura, C-Y. Hung, V. Evstropov, M.Mintairov, M.Shvarts,Y.Okada, “Experimental characterization and self-consistent modeling of luminescence coupling effect in III-V multijunction solar cells”, Appl. Phys. Lett. 103, 263907(4 pages) (2013)

  • Okada, N. J. Ekins-Daukes, T. Kita, R. Tamaki, M. Yoshida, A. Pusch, O. Hess, C. C. Phillips, D. J. Farrell1, K. Yoshida1, N. Ahsan, Y. Shoji, T. Sogabe and J.-F. Guillemoles, “Intermediate band solar cells: Recent progress and future directions”, Appl. Phys. Rev. 2, 021302 (2015) [Selected as the cover of the issue]

  • Y. Okada, K. Yoshida, Y. Shoji, T. Sogabe,  “Recent progress on quantum dot intermediate band solar cells”, (review paper ) IEICE Electronics Express, 10, 1 (2013)

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