Press Release

Publications in 2017

  1. R. J. Collins, R. Amiri, M. Fujiwara, T. Honjo, K. Shimizu, K. Tamaki, M. Takeoka, M. Sasaki, E. Andersson, and G. S. Buller

    Experimental demonstration of quantum digital signatures over 43 dB channel loss using differential phase shift quantum key distribution

    Sci Rep 7, 3235 (2017).

  2. A. Ishizawa, R. Kou, T. Goto, T. Tsuchizawa, N. Matsuda, K. Hitachi, T. Nishikawa, K. Yamada, T. Sogawa, and H. Gotoh

    Optical nonlinearity enhancement with graphene-decorated silicon waveguides

    Sci Rep 7, 45520 (2017).

  3. T. Ikuta, and H. Takesue

    Implementation of quantum state tomography for time-bin qudits

    New J. Phys. 19, 013039 (2017).

Publications in 2016

  1. R. Ikuta, T. Kobayashi, K. Matsuki, S. Miki, T. Yamashita, H. Terai, T. Yamamoto, M. Koashi, T. Mukai and N. Imoto

    Heralded single excitation of atomic ensemble via solid-state-based telecom photon detection

    Optica 3 (11), 1279-1284 (2016).

  2. T. Inagaki, Y. Haribara, K. Igarashi, T. Sonobe, S. Tamate, T. Honjo, A. Marandi, P. L. McMahon, T. Umeki, K. Enbutsu, O. Tadanaga, H. Takenouchi, K. Aihara, K. Kawarabayashi, K. Inoue, S. Utsunomiya and H. Takesue

    A coherent Ising machine for 2000-node optimization problems

    Science 354 (6312), 603-606 (2016).

  3. P. L. McMahon, A. Marandi, Y. Haribara, R. Hamerly, C. Langrock, S. Tamate, T. Inagaki, H. Takesue, S. Utsunomiya, K. Aihara, R. L. Byer, M. M. Fejer, H. Mabuchi and Y. Yamamoto

    A fully programmable 100-spin coherent Ising machine with all-to-all connections

    Science 354 (6312), 614-617 (2016).

  4. R. J. Collins, R. Amiri, M. Fujiwara, T. Honjo, K. Shimizu, K. Tamaki, M. Takeoka, E. Andersson, G. S. Buller and M. Sasaki

    Experimental transmission of quantum digital signatures over 90 km of installed optical fiber using a differential phase shift quantum key distribution system

    Opt. Lett. 41 (21), 4883-4886 (2016).

  5. R. Hamerly, K. Inaba, T. Inagaki, H. Takesue, Y. Yamamoto and H. Mabuchi

    Topological defect formation in 1D and 2D spin chains realized by network of optical parametric oscillators

    Int. J. Mod. Phys. B 30 (25), 1630014 (2016).

  6. H. Takesue and T. Inagaki

    10 GHz clock time-multiplexed degenerate optical parametric oscillators for a photonic Ising spin network

    Opt. Lett. 41 (18), 4273-4276 (2016).

  7. M. Taguchi, S. Nakajima, T. Kubo and Y. Tokura

    Quantum Adiabatic Pumping by Modulating Tunnel Phase in Quantum Dots

    J. Phys. Soc. Jpn. 85 (8), 084704 (2016).

  8. N. Matsuda and H. Takesue

    Generation and manipulation of entangled photons on silicon chips

    Nanophotonics 5 (3), 440-455 (2016).

  9. D. Morita, T. Kubo, Y. Tokura and M. Yamashita

    Spin-1 quantum walks

    Phys. Rev. A 93 (6), 063625 (2016).

  10. T. Inagaki, K. Inaba, R. Hamerly, K. Inoue, Y. Yamamoto and H. Takesue

    Large-scale Ising spin network based on degenerate optical parametric oscillators

    Nat. Photonics 10 (6), 415-+ (2016).

  11. K. Inaba and M. Yamashita

    Theoretical analysis of the spectroscopy of atomic Bose-Hubbard systems

    Phys. Rev. A 93 (4), 043608 (2016).

  12. S. Bevilacqua, E. Novoselov, S. Cherednichenko, H. Shibata and Y. Tokura

    Wideband MgB2 Hot-Electron Bolometer Mixers: IF Impedance Characterisation and Modeling

    IEEE Trans. Appl. Supercond. 26 (3), 2300105 (2016).

  13. S. Kato, K. Inaba, S. Sugawa, K. Shibata, R. Yamamoto, M. Yamashita and Y. Takahashi

    Laser spectroscopic probing of coexisting superfluid and insulating states of an atomic Bose-Hubbard system

    Nat. Commun. 7 11341 (2016).

  14. K. Sasaki, S. Murakami and Y. Tokura

    Determination of intrinsic lifetime of edge magnetoplasmons

    Phys. Rev. B 93 (12), 125402 (2016).

  15. E. Novoselov, S. Bevilacqua, S. Cherednichenko, H. Shibata and Y. Tokura

    Effect of the Critical and Operational Temperatures on the Sensitivity of MgB2 HEB Mixers

    IEEE Trans. Terahertz Sci. Technol. 6 (2), 238-244 (2016).

  16. D. Hashimoto and K. Shimizu

    Coherent Raman beat analysis of the hyperfine sublevel coherence properties of 167Er3+ ions doped in an Y2SiO5 crystal

    J. Lumines. 171 183-190 (2016).

  17. T. Ikuta and H. Takesue

    Enhanced violation of the Collins-Gisin-Linden-Massar-Popescu inequality with optimized time-bin-entangled ququarts

    Phys. Rev. A 93 (2), 022307 (2016).

  18. R. Asaoka, H. Tsuchiura, M. Yamashita and Y. Toga

    Dynamical instability in the S=1 Bose-Hubbard model

    Phys. Rev. A 93 (1), 013628 (2016).

  19. N. Matsuda

    Deterministic reshaping of single-photon spectra using cross-phase modulation

    Sci. Adv. 2 (3), e1501223 (2016).

  20. A. M. Thomasen, T. Mukai, and T. Byrnes

    Ultrafast coherent control of spinor Bose-Einstein condensates using stimulated Raman adiabatic passage

    Phys. Rev. A 94 (5), 053636 (2016).

Publications in 2015

  1. K. Shimizu and Y. Tokura

    Identifying a correlated spin fluctuation in an entangled spin chain subject to a quantum phase transition

    Phys. Rev. E 92, 062143 (2015).

  2. F. Morikoshi

    An entanglement analogue in light cones

    Prog. Theor. Exp. Phys. 123A04 (2015).

  3. H. Takesue, T. Sasaki, K. Tamaki and M. Koashi

    Experimental quantum key distribution without monitoring signal disturbance

    Nat. Photonics 9, 827-831 (2015).

  4. H. Takesue, S. D. Dyer, M. J. Stevens, V. Verma, R. P. Mirin and S. W. Nam

    Quantum teleportation over 100 km of fiber using highly efficient superconducting nanowire single-photon detectors

    Optica 2, 832-835 (2015).

  5. J. Carolan, C. Harrold, C. Sparrow, E. Martin-Lopez, N. J. Russell, J. W. Silverstone, P. J. Shadbolt, N. Matsuda, M. Oguma, M. Itoh, G. D. Marshall, M. G. Thompson, J. C. F. Matthews, T. Hashimoto, J. L. O'Brien and A. Laing

    Universal linear optics

    Science 349, 711-716 (2015).

  6. H. Shibata, K. Shimizu, H. Takesue and Y. Tokura

    Ultimate low system dark-count rate for superconducting nanowire single-photon detector

    Opt. Lett. 40, 3428-3431 (2015).

  7. K. Noda, K. Inaba and M. Yamashita

    Magnetism in the three-dimensional layered Lieb lattice: Enhanced transition temperature via flat-band and Van Hove singularities

    Phys. Rev. A 91, 063610 (2015).

  8. N. Zen, H. Shibata, Y. Mawatari, M. Koike and M. Ohkubo

    Biomolecular ion detection using high-temperature superconducting MgB2 strips

    Appl. Phys. Lett. 106, 222601 (2015).

  9. H. Takesue, E. Diamanti, R. Thew and Z. L. Yuan

    Introduction to the Issue on Quantum Communication and Cryptography

    IEEE J. Sel. Top. Quantum Electron. 21, 0200402 (2015).

  10. T. Byrnes, D. Rosseau, M. Khosla, A. Pyrkov, A. Thomasen, T. Mukai, S. Koyama, A. Abdelrahman, and E. Ilo-Okeke

    Macroscopic quantum information processing using spin coherent states

    Opt. Commun. 337 102-109 (2015).

Publications in 2014

  1. A. Abdelrahman, T. Mukai, H. Haffner and T. Byrnes

    Coherent all-optical control of ultracold atoms arrays in permanent magnetic traps

    Opt. Express 22 (3), 3501-3513 (2014).

  2. R. Asaoka, H. Tsuchiura, M. Yamashita and Y. Toga

    Density Modulations Associated with the Dynamical Instability in the Bose-Hubbard Model

    J. Phys. Soc. Jpn. 83 (12), 124001 (2014).

  3. T. Byrnes, D. Rosseau, M. Khosla, A. Pyrkov, A. Thomasen, T. Mukai, S. Koyama, A. Abdelrahman and E. Ilo-Okeke

    Macroscopic quantum information processing using spin coherent states

    Optics Communicatins, 337, 102-109 (2014).

  4. H. Imai, K. Inaba, H. Tanji-Suzuki, M. Yamashita and T. Mukai

    Bose-Einstein condensate on a persistent-supercurrent atom chip

    Appl. Phys. B-Lasers Opt. 116 (4), 821-829 (2014).

  5. K. Inaba, Y. Tokunaga, K. Tamaki, K. Igeta and M. Yamashita

    High-Fidelity Cluster State Generation for Ultracold Atoms in an Optical Lattice

    Phys. Rev. Lett. 112 (11), 110501 (2014).

  6. N. Matsuda, P. Karkus, H. Nishi, T. Tsuchizawa, W. J. Munro, H. Takesue and K. Yamada

    On-chip generation and demultiplexing of quantum correlated photons using a silicon-silica monolithic photonic integration platform

    Opt. Express 22 (19), 22831-22840 (2014).

  7. N. Matsuda, E. Kuramochi, H. Takesue and M. Notomi

    Dispersion and light transport characteristics of large-scale photonic-crystal coupled nanocavity arrays

    Opt. Lett. 39 (8), 2290-2293 (2014).

  8. K. Noda, K. Inaba and M. Yamashita

    Flat-band ferromagnetism in the multilayer Lieb optical lattice

    Phys. Rev. A 90 (4), 043624 (2014).

  9. H. Shibata

    Fabrication of a MgB2 nanowire single-photon detector using Br2-N2 dry etching

    Appl. Phys. Express 7 (10), 103101 (2014).

  10. H. Shibata, T. Honjo and K. Shimizu

    Quantum key distribution over a 72 dB channel loss using ultralow dark count superconducting single-photon detectors

    Opt. Lett. 39 (17), 5078-5081 (2014).

  11. K. Shimizu, T. Honjo, M. Fujiwara, T. Ito, K. Tamaki, S. Miki, T. Yamashita, H. Terai, Z. Wang and M. Sasaki

    Performance of Long-Distance Quantum Key Distribution Over 90-km Optical Links Installed in a Field Environment of Tokyo Metropolitan Area

    J. Lightwave Technol. 32 (1), 141-151 (2014).

  12. H. Takesue

    Entangling time-bin qubits with a switch

    Phys. Rev. A 89 (6), 062328 (2014).

  13. H. Takesue, N. Matsuda, E. Kuramochi and M. Notomi

    Entangled photons from on-chip slow light

    Sci Rep 4, 3913 (2014).

  14. N. Y. Kim, K. Kusudo, A. Loffler, S. Hofling, A. Forchel, and Y. Yamamoto

    f-band condensates in exciton-polariton lattice systems

    Phys. Rev. B 89 (8), 085306 (2014).

Publications in 2013

  1. S. Bevilacqua, S. Cherednichenko, V. Drakinskiy, H. Shibata, Y. Tokura, and J. Stake

    Study of IF Bandwidth of MgB Phonon-Cooled Hot-Electron Bolometer Mixers

    IEEE Trans. Terahertz Sci. Technol. 3 (4), 409-415 (2013).

  2. SJ. Devitt, WJ. Munro, and K. Nemoto

    Quantum error correction for beginners

    Rep. Prog. Phys. 76 (7), 076001 (2013).

  3. SJ. Devitt, AM. Stephens, WJ. Munro, and K. Nemoto

    Requirements for fault-tolerant factoring on an atom-optics quantum computer

    Nat. Commun. 4, 2524 (2013).

  4. M. Fujiwara, T. Honjo, K. Shimizu, K. Tamaki, and M. Sasaki

    Characteristics of superconducting single photon detector in DPS-QKD system under bright illumination blinding attack

    Opt. Express 21 (5), 6304-6312 (2013).

  5. T. Hatano, Y. Tokura, S. Amaha, T. Kubo, S. Teraoka, and S. Tarucha

    Excitation spectroscopy of few-electron states in artificial diatomic molecules

    Phys. Rev. B 87 (24), 241414 (2013).

  6. T. Honjo, M. Fujiwara, K. Shimizu, K. Tamaki, S. Miki, T. Yamashita, H. Terai, Z. Wang, and M. Sasaki

    Countermeasure against tailored bright illumination attack for DPS-QKD

    Opt. Express 21 (3), 2667-2673 (2013).

  7. K. Igeta, N. Imoto, and M. Koashi

    Fundamental limit to qubit control with coherent field

    Phys. Rev. A 87 (2), 022321 (2013).

  8. K. Inaba, and SI. Suga


    Mod. Phys. Lett. B 27 (12), 1330008 (2013).

  9. T. Inagaki, T. Imai, J. Miyazu, and J. Kobayashi

    Polarization independent varifocal lens using KTN crystals

    Opt. Lett. 38 (15), 2673-2675 (2013).

  10. T. Inagaki, N. Matsuda, O. Tadanaga, M. Asobe, and H. Takesue

    Entanglement distribution over 300 km of fiber

    Opt. Express 21 (20), 23241-23249 (2013).

  11. T. Kubo, and Y. Tokura

    Backaction dephasing by a quantum dot detector

    Phys. Rev. B 88 (15), 155402 (2013).

  12. N. Matsuda, H. Takesue, K. Shimizu, Y. Tokura, E. Kuramochi, and M. Notomi

    Slow light enhanced correlated photon pair generation in photonic-crystal coupled-resonator optical waveguides

    Opt. Express 21 (7), 8596-8604 (2013).

  13. F. Morikoshi

    Multipartite Nonlocality in Ontological Models of Quantum Theory

    J. Phys. Soc. Jpn. 82 (5), 055003 (2013).

  14. H. Shibata, T. Akazaki, and Y. Tokura

    Ultrathin MgB2 films fabricated by molecular beam epitaxy and rapid annealing

    Supercond. Sci. Technol. 26 (3), 035005 (2013).

  15. H. Shibata, T. Akazaki, and Y. Tokura

    Fabrication of MgB2 Nanowire Single-Photon Detector with Meander Structure

    Appl. Phys. Express 6 (2), 023101 (2013).

  16. H. Shibata, K. Shimizu, H. Takesue, and Y. Tokura

    Superconducting Nanowire Single-Photon Detector with Ultralow Dark Count Rate Using Cold Optical Filters

    Appl. Phys. Express 6 (7), 072801 (2013).

  17. AM. Stephens, JJ. Huang, K. Nemoto, and WJ. Munro

    Hybrid-system approach to fault-tolerant quantum communication

    Phys. Rev. A 87 (5), 052333 (2013).

  18. AM. Stephens, WJ. Munro, and K. Nemoto

    High-threshold topological quantum error correction against biased noise

    Phys. Rev. A 88 (6), 060301 (2013).

  19. H. Takesue, N. Matsuda, E. Kuramochi, WJ. Munro, and M. Notomi

    An on-chip coupled resonator optical waveguide single-photon buffer

    Nat. Commun. 4, 2725 (2013).

  20. M. Yamashita, S. Kato, A. Yamaguchi, S. Sugawa, T. Fukuhara, S. Uetake, and Y. Takahashi

    Strongly interacting array of Bose-Einstein condensates trapped in a one-dimensional optical lattice

    Phys. Rev. A 87 (4), 041604 (2013).

  21. S. Saito, XB. Zhu, R. Amsuess, Y. Matsuzaki, K. Kakuyanagi, T. Shimo-Oka, N. Mizuochi, K. Nemoto, WJ. Munro, and K. Semba

    Towards Realizing a Quantum Memory for a Superconducting Qubit: Storage and Retrieval of Quantum States

    Phys. Rev. Lett. 111 (10), 107008 (2013).

Publications in 2012

  1. A. Aharony, S. Gurvitz, Y. Tokura, O. Entin-Wohlman, and S. Dattagupta

    Partial decoherence in mesoscopic systems

    Phys. Scr. T151, 014018 (2012).

  2. U. Akram, W. Munro, K. Nemoto, and GJ. Milburn

    Photon-phonon entanglement in coupled optomechanical arrays

    Phys. Rev. A 86 (4), 042306 (2012).

  3. K. Azuma, and G. Kato

    Optimal entanglement manipulation via coherent-state transmission

    Phys. Rev. A 85 (6), 060303 (2012).

  4. K. Azuma, H. Takeda, M. Koashi, and N. Imoto

    Quantum repeaters and computation by a single module: Remote nondestructive parity measurement

    Phys. Rev. A 85 (6), 062309 (2012).

  5. S. Bevilacqua, S. Cherednichenko, V. Drakinskiy, J. Stake, H. Shibata, and Y. Tokura

    Low noise MgB2 terahertz hot-electron bolometer mixers

    Appl. Phys. Lett. 100 (3), 033504 (2012).

  6. KL. Brown, C. Horsman, V. Kendon, and WJ. Munro

    Layer-by-layer generation of cluster states

    Phys. Rev. A 85 (5), 052305 (2012).

  7. MJ. EverittJ, WJ. Munro, and TP. Spiller

    Overcoming decoherence in the collapse and revival of spin Schrodinger-cat states

    Phys. Rev. A 85 (2), 022113 (2012).

  8. K. Inaba, and S. Suga

    Superfluid State of Repulsively Interacting Three-Component Fermionic Atoms in Optical Lattices

    Phys. Rev. Lett. 108 (25), 255301 (2012).

  9. J. Joo, K. Park, H. Jeong, W. Munro J, K. Nemoto, and TP. Spiller

    Quantum metrology for nonlinear phase shifts with entangled coherent states

    Phys. Rev. A 86 (4), 043828 (2012).

  10. M. Kohda, S. Nakamura, Y. Nishihara, K. Kobayashi, T. Ono, J. Ohe, Y. Tokura, T. Mineno, and J. Nitta

    Spin-orbit induced electronic spin separation in semiconductor nanostructures

    Nat. Commun. 3, 1082 (2012).

  11. N. Masumoto, NY. KimY, T. Byrnes, K. Kusudo, A. Loffler, S. Hofling, A. Forchel, and Y. Yamamoto

    Exciton-polariton condensates with flat bands in a two-dimensional kagome lattice

    New J. Phys. 14, 065002 (2012).

  12. N. Matsuda, H. Le Jeannic, H. Fukuda, T. Tsuchizawa, WJ. Munro, K. Shimizu, K. Yamada, Y. Tokura, and H. Takesue

    A monolithically integrated polarization entangled photon pair source on a silicon chip

    Sci Rep 2, 817 (2012).

  13. WJ. Munro, AM. Stephens, SJ. Devitt, KA. Harrison, and K. Nemoto

    Quantum communication without the necessity of quantum memories

    Nat. Photonics 6 (11), 777-781 (2012).

  14. T. Obata, M. Pioro-Ladriere, Y. Tokura, and S. Tarucha

    The photon-assisted dynamic nuclear polarization effect in a double quantum dot

    New J. Phys. 14, 123013 (2012).

  15. H. Takesue

    Entangled Photon Pair Generation Using Silicon Wire Waveguides

    IEEE J. Sel. Top. Quantum Electron. 18 (6), 1722-1732 (2012).

  16. K. Tamaki, H. Lo K, C. FungHF, and B. Qi

    Phase encoding schemes for measurement-device-independent quantum key distribution with basis-dependent flaw

    Phys. Rev. A 85 (4), 042307 (2012).

  17. Y. Toga, H. Tsuchiura, M. Yamashita, K. Inaba, and H. Yokoyama

    Mott Transition and Spin Structures of Spin-1 Bosons in Two-Dimensional Optical Lattice at Unit Filling

    J. Phys. Soc. Jpn. 81 (6), 063001 (2012).

  18. H. Shibata, N. Kaina, T. Seki, Y. Tokura, and N. Imoto

    NbN superconducting single-photon with bilayer structure

    Physics Procedia 36, 324-329 (2012).