T. Yamamoto, H. Yamane, N. Yokoshi, and H. Oka
"Optical Imaging of a Single Molecule with Subnanometer Resolution by Photoinduced Force Microscopy"
ACS Nano18, pp. 1724–1732(2024)
K. Kuroda, T. Ikeguchi, and H. Oka
"Fiber-cavity ring-down temperature sensor using a transmissive configuration combined with the heterodyne detection technique"
Applied Optics63, pp. 676-680(2024)
K. Kuroda, T. Matsumoto, and H. Oka
"Time-and Wavelength-Division Multiplexed Heterodyne Detection Applied to FBG Interrogation"
IEEE Photonics Technology Letters36, pp. 317-320(2024)
Hidemasa Yamane, Nobuhiko Yokoshi, Hajime Ishihara, and Hisaki Oka
"Enantioselective optical trapping of single chiral molecules in the superchiral field vicinity of metal nanostructures"
Optics Express31, pp. 13708-13723 (2023)
Hisaki Oka
"Two-photon absorption dynamics by a rectangular entangled-photon pulse with time delay"
Journal of Physics B56, 065501 (2023)
Hidemasa Yamane, Nobuhiko Yokoshi, Hisaki Oka, Yasuhiro Sugawara, and Hajime Ishihara
"Near-field circular dichroism of single molecules"
Optics Express 31, pp. 3415-3426 (2023)
Hisaki Oka
"Functional separation of energy transfer and photon absorption of excitons formed in circular nanoantennae"
Physica Status Solidi B 259, pp.2200206-1-11 (2022)
Hisaki Oka
"Enhanced and Selective Two-Photon Excitation of Molecular Vibronic States Using Entangled Photons"
H. Miyasaka, K. Matsuda, J. Abe, and T. Kawai (Eds), Photosynergetic Responses in Molecules and Molecular Aggregates (Springer, Singapore, 2020) pp.43-55
Hisaki Oka "Entangled two-photon absorption spectroscopy for optically-forbidden transition detection" Journal of Chemical Physics152, 044106 (2020)
Yasuo Ohdaira, Yuki Ikeda, Hisaki Oka, and Kazunari Shinbo "Optically reversible deformation of azobenzene particles prepared by a colloidal method" Journal of Applied Physics 125,103104 (2019)
Hisaki Oka "Direct excitation of molecular vibrational motion by intense
broadband THz pulses" Journal of Physics B: Atomic, Molecular and Optical Physics 52,025503 (2018)
Hisaki Oka "Finite-difference time-domain method for calculating photoexcited molecular vibration wave-packet dynamics" Journal of Physics Communications 2, 115006 (2018)
Hisaki Oka "Enhanced vibrational-mode-selective two-step excitation using
ultrabroadband frequency-entangled photons" Physical Review A 97, 063859 (2018)
Hisaki Oka "Two-photon absorption by spectrally shaped entangled
photons"
Physical Review A 97, 033814 (2018)
Hisaki Oka and Yasuo Ohdaira "Simple model of saturable localised surface plasmon" Scientific Reports 8, 2643 (2018)
Hisaki Oka "Generation of broadband ultraviolet frequency-entangled photons
using cavity quantum plasmonics" Scientific Reports 7, 8047 (2017)
Hisaki Oka
"Role of an elliptical structure in photosynthetic energy transfer: Collaboration between quantum entanglement and thermal fluctuation"
Scientific Reports 6, 26058 (2016)
Hisaki Oka
"Selection rule and entanglement in energy transfer between doubly concentrically arranged nanostructures"
Physica Status Solidi B 253, 292 (2016)
Y. Ohdaira, H. Oka, K. Shinbo, A. Baba, K. Kato, and F. Kaneko
"Generation of fluorescent nanodroplets of liquid crystal utilizing electrospray deposition"
Japanese Journal of Applied Physics 55, 02BB09 (2016)
Hisaki Oka
"Highly-efficient entangled two-photon absorption with the assistance of plasmon nanoantenna"
Journal of Physics B: Atomic, Molecular and Optical Physics 48, 115503 (2015)
S. Matsuura, Y. Mitsumori, H. Kosaka, K. Edamatsu, K. Miyazaki, D. Kim, M. Nakayama, G. Oohata, H. Oka, H. Ajiki, and H. Ishihara
"Observation of bound and antibound states of cavity polariton pairs in a CuCl microcavity"
Physical Review B 89, 035317 (2014)
Hisaki Oka
"Generation of broadband frequency-entangled photons using plasmon nanoantenna"
Applied Physics Letters 103, 174108 (2013)
S. Matsuura, Y. Mitsumori, H. Kosaka, K. Edamatsu, K. Miyazaki, Y. Kanatani, D. Kim, M. Nakayama, G. Oohata, H. Oka, H. Ajiki, and H. Ishihara
"Polarization dependence of four-wave mixing via biexcitons in CuCl microcavities"
Physica Status Solidi C 9, 2505 (2012)
Hisaki Oka
"Two-photon process via internal conversion by correlated photon pairs"
Physical Review A 85, 013403 (2012)
Hisaki Oka
"Control of vibronic excitation using quantum-correlated photons"
Journal of Chemical Physics 135, 164304 (2011)
Hisaki Oka
"Selective two-photon excitation of a vibronic state by correlated photons"
Journal of Chemical Physics 134, 124313 (2011)
Hisaki Oka and Hiroshi Ajiki
"Light squeezing via a biexciton in a semiconductor microcavity"
Physical Review B 83, 045305 (2011)
Hisaki Oka "Condition for Efficient Two-Photon Excitation by Quantum-Correlated Photons"
The Review of Laser Engineering 39, 133 (2011)
Hisaki Oka
"Efficient two-step up-conversion by quantum-correlated photon pairs"
Optics Express 18, 25839 (2010)
Hisaki Oka
"Efficient selective two-photon excitation by tailored quantum-correlated photons"
Physical Review A 81, 063819 (2010)
Hisaki Oka
"Real-time analysis of two-photon excitation by correlated photons: Pulse-width dependence of excitation efficiency"
Physical Review A 81, 053837 (2010)
Hisaki Oka, Hideki Fujiwara, Shigeki Takeuchi, and Keiji Sasaki
"Nonlinear optical phase shift obtained from two-level atoms confined in a planar microcavity"
Journal of Applied Physics 107, 054310 (2010)
Hisaki Oka, Goro Oohata, and Hajime Ishihara
"Efficient generation of energy-tunable entangled photons in a semiconductor microcavity"
Applied Physics Letters 94, 111113 (2009)
-- Selected for Virtual Journal of Quantum Information Volume 9, Issue 4 (2009)
Hisaki Oka, Kazuya Taniguchi, Hiroshi Ajiki, and Hajime Ishihara
"General mechanism of optical nonlinearity enhancement by cavity QED"
Physical Review B 78, 245420 (2008)
Hisaki Oka and Hajime Ishihara
"Real-time analysis of the optical response of cavity bipolaritons:
Four-wave mixing and dynamics of formation"
Physical Review B 78, 195314 (2008)
Hisaki Oka and Hajime Ishihara
"Highly efficient generation of entangled photons by controlling cavity bipolariton states"
Physical Review Letters 100, 170505 (2008)
-- Selected for Virtual Journal of Nanoscale Science & Technology Volume 17, Issue 19 (2008)
-- Selected for Virtual Journal of Quantum Information Volume 8, Issue 5 (2008)
Hisaki Oka and Hajime Ishihara
"Effects of unbound two-exciton states on entangled photons generated from a cavity biexciton"
Physica Status Solidi C 5, 7, 2446 (2008)
Hisaki Oka and Hajime Ishihara
"Theory of entangled-photon generation via cavity bipolaritons"
European Conference on Lasers and Electro-Optics and the International (2007)
Shigeki Takeuchi, Hisaki Oka, Kunihiro Kojima, Holger F. Hofmann, and Keiji Sasaki
"Quantum phase gate using single atom nonlinearity"
Proceedings of SPIE 5839, 58930K (2005)
Hisaki Oka, Shigeki Takeuchi, and Keiji Sasaki
"Optical response of two-level atoms with reflection geometry as a model of a quantum phase gate"
Physical Review A 72, 013816 (2005)
-- Selected for Virtual Journal of Quantum Information Volume 5, Issue 8 (2005)
Hisaki Oka, Holger F. Hofmann, Shigeki Takeuchi, and Keiji Sasaki
"Effects of decoherence on the nonlinear optical phase shift obtained from a one-dimensional atom"
Japanese Journal of Applied Physics 43,11A 7495 (2004)
Hisaki Oka, Holger F. Hofmann, Shigeki Takeuchi, and Keiji Sasaki "Effects of dephasing on the nonlinear
phase shift obtained from a one-dimensional atom"
Nonlinear Optics: Materials, Fundamentals and Applications (2004)
Hisaki Oka and Kazutoshi Gohara
"Approximation of the fractal transition using attractors excited by periodic inputs"
International Journal of Bifurcation and Chaos 13, 4, 943 (2003)