Keisuke Fujii

Division of Advanced Electronics and Optical Science
Graduate School of Engineering Science
Osaka University
Toyonaka, Osaka 560-8531, Japan
Email: fujii* (replace "*" to "@")

Quantum Information -> Computation -> Physics....

Research interest: fault-tolerant quantum computation, physical implementation of quantum information processing, measurement-based quantum computation, computational classical-quantum boundary, classical simulatability, quantum dynamics in many-body quantum system, blind quantum computation

Top |Biography |Publications |GoogleScholarCitation |ResearcherGate |Lectures(in Japanese)


2006-2011 Graduate School of Engineering, Kyoto University
supervisor: Prof. Katsuji Yamamoto
PhD thesis:"Fault-Tolerant Quantum Computation on Logical Cluster States" [Link]
2011-2013 Graduate School of Engineering Science, Osaka University
Postdoctoral researcher at Prof. Imoto's Lab.
2013-2016 The Hakubi Center for Advanced Research, Kyoto University
2016-2017 Photon Science Center of The University of Tokyo
2017-2019 Graduate School of Science, Kyoto University
2019- current position

[peer-reviewed journal]
"Measurement-Free Topological Protection Using Dissipative Feedback"
K. Fujii, M. Negoro, N. Imoto, and M. Kitagawa, Phys. Rev. X 4, 041039 (2014)

"Quantum algorithm for an additive approximation of Ising partition functions"
A. Matsuo, K. Fujii, and N. Imoto, Phys. Rev. A 90, 022304 (2014)

"Hardness of Classically Simulating the One-Clean-Qubit Model"
T. Morimae, K. Fujii, J. Fitzsimons, Phys. Rev. Lett. 112, 130502 (2014)

"Secure entanglement distillation for double-server blind quantum computation"
T. Morimae and K. Fujii, Phys. Rev. Lett. 111, 020502 (2013) arXiv:1302.3786

“Quantum information and statistical mechanics: an introduction to frontier”
K. Fujii, Interdisciplinary Information Sciences 19, 1-15 (2013) arXiv:1306.6757

"Blind quantum computation protocol in which Alice only makes measurements",
T. Morimae and K. Fujii, Phys. Rev. A 87, 050301(R) (2013) arXiv:1201.3966

"Measurement-Based Quantum Computation on Symmetry Breaking Thermal States" (selected to Editors’ suggestion),
K. Fujii, Y. Nakata, M. Ohzeki, M. Murao, Phys. Rev. Lett. 110, 120502 (2013) arXiv:1209.1265

"Duality analysis on random planar lattice",
M. Ohzeki and K. Fujii, Phys. Rev. E 86, 051121 (2012) arXiv:1209.3500

"Blind topological measurement-based quantum computation",
T. Morimae and K. Fujii, Nature Communications 3, 1036 (2012). arXiv:1110.5460

"Error- and Loss-Tolerances of Surface Codes with General Lattice Structures"
K. Fujii and Y. Tokunaga, Phys. Rev. A 86, 020303(R) (2012). arXiv:1202.2743

"Not all physical errors can be linear CPTP maps in a correlation space",
T. Morimae and K. Fujii, Scientific Reports 2, 508 (2012). arXiv:1106.3720 arXiv:1110.4182(supplemental material)

"Computational Power and Correlation in Quantum Computational Tensor Network",
K. Fujii and T. Morimae, Phys. Rev. A 85, 032338 (2012). arXiv:1106.3377

"Topologically protected measurement-based quantum computation on the thermal state of a nearest-neighbor two-body Hamiltonian with spin-3/2 particles",
K. Fujii and T. Morimae, Phys. Rev. A 85, 010304(R) (2012) arXiv:1111.0919

"Robust and Scalable Scheme to Generate Large-Scale Entanglement Webs",
K. Fujii, H. Maeda and K. Yamamoto, Phys. Rev. A 83, 050303(R) (2011) arXiv:1102.4682

"Fault-Tolerant Topological One-Way Quantum Computation with Probabilistic Two-Qubit Gates",
K. Fujii and Y. Tokunaga, Phys. Rev. Lett. 105, 250503 (2010). arXiv:1008.3752

"Topological One-Way Quantum Computation on Verified Logical Cluster States",
K. Fujii and K. Yamamoto, Phys. Rev. A 82, 060301(R) (2010). arXiv:1008.2048

"Anti-Zeno effect for quantum transport in disordered systems",
K. Fujii and K. Yamamoto, Phys. Rev. A 82, 042109 (2010). arXiv:1003.1804

"Cluster-based architecture for fault-tolerant quantum computation",
K. Fujii and K. Yamamoto, Phys. Rev. A 81, 042324 (2010). arXiv:0912.5150

"Entanglement purification with double-selection",
K. Fujii and K. Yamamoto, Phys. Rev. A 80, 042308 (2009). arXiv:0811.2639

[on arXiv]
"A distributed architecture for scalable quantum computation with realistically noisy devices"
K. Fujii, T. Yamamoto, M. Koashi, and N. Imoto, arXiv:1202.6588

“Quantum Commuting Circuits and Complexity of Ising Partition Functions”
K. Fujii and T. Morimae, arXiv:1311.2128

"Computational quantum-classical boundary of commuting quantum circuits"
K. Fujii, S. Tamate, arXiv:1406.6932

[conference proceedings]
"Fault-tolerant quantum computation in concatenation of verified cluster states",
K. Fujii and K. Yamamoto, Proceedings of the 9th International Conference of QCMC (AIP Press, Melville, NY, 2009), p. 141. arXiv:0802.4137

"Robust One-Way Computer using Encoded Qubits",
K. Fujii and K. Yamamoto, Proceedings of the 8th International Conference of QCMC (NICT Press, 2007), p. 105. arXiv:quant-ph/0611160

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