Publications | QIC Laboratory
Efficient Simulation of Hybrid Continuous- and Discrete-Variable Quantum Circuits via Gaussian Decompositions
2026
arXiv(プレプリント・未査読)
Kazufumi Tanji, Dot Belin Pio, Shohei Kiryu, Ulrik Lund Andersen, Masahiro Takeoka
https://arxiv.org/abs/2609.34793
ガウス関数の線形結合を用いて連続変数・離散変数が混在する量子回路をシミュレーションする枠組みを提案しています。
Improving the Loss Tolerance of Heralded Photonic GHZ States for Long-Distance Device-Independent Conference Key Agreement
2026
arXiv(プレプリント・未査読)
Yazeed K. Alwehaibi, Makoto Ishihara, Shakib Daryanoosh, Ewan Mer, Shang Yu, Wojciech Roga, Ian A. Walmsley, Masahiro Takeoka, Raj B. Patel
https://arxiv.org/abs/2609.24941v2
光子数符号化・光源構成・測定の割り当てを検討し長距離デバイス非依存会議鍵共有に向けた光GHZ状態の損失耐性を改善する手法を提案しています。
Improving the rate-loss scaling in polarization entanglement distribution using single-click entanglement swapping
2026
Optica
Hikaru Shimizu, Joe Yoshimoto, Daiki Ichii, Junko Ishi-Hayase, Rikizo Ikuta, Masahiro Takeoka
https://arxiv.org/abs/2507.14836
単一クリックのエンタングルメントスワッピングを用い偏光もつれ配信の損失に対する生成率のスケーリング改善を実験で示しました。
Symmetry-resolved tree tensor network analysis of Bell-state discrimination with ancilla-assisted passive linear optics
2026
arXiv:2609.07319
A. Kumar, W. Roga, D. K. Mishra, M. Takeoka
Enhancing noise robustness in device-independent conference key agreement with asymmetric parity-CHSH inequalities
2026
arXiv:2609.03551
M. Ishihara, W. Roga, J. B. Brask, M. Takeoka
Fundamental limits of parameter estimation with heralded optical non-Gaussian states generated from Gaussian resources
2026
arXiv:2608.06239
S. Kiryu, K. Tanji, Y. Ueda, K. Fukui, M. Takeoka
Information geometric quantification of effective privacy in quantum metrology
2026
arXiv:2607.11302
L. Bianchi, S. Yamaguchi, W. Roga, D. Bacco, M. Takeoka
Multipartite device-independent quantum key distribution using W states
2026
arXiv:2603.00937
M. Ishihara, W. Roga, M. Takeoka
Privacy in Continuous-Variable Distributed Quantum Sensing
2026
PRX Quantum
A. de Oliveira Junior, A. L. Andersen, B. L. Larsen, S. W. Moore, D. Markham, M. Takeoka, J. B. Brask, U. L. Andersen
Fault-tolerant modular quantum computing with surface codes using single-shot emission-based hardware
2026
Phys. Rev. Applied
S. Singh, R. Kashiwagi, K. Tanji, W. Roga, D. Bhatti, M. Takeoka, D. Elkouss
High-rate qutrit entanglement swapping with photon-number-basis
2026
Phys. Rev. Research
K. Tanji, H. Shimizu, M. Takeoka
Demonstration of sequential processors with quantum advantage and analysis of classical performance limit
2026
Phys. Rev. Research
S. Tateishi, W. Wang, B. Chevalier, T. Ono, M. Takeoka, W. Roga
量子ネットワーク技術の研究動向
2026
2026年電子情報通信学会ソサイエティ大会「量子通信・ネットワークにおける国内研究の最前線」、北海道大学、札幌、2026年9月25日(招待講演)
武岡 正裕
基底状態冷却が不要な連続量量子誤り訂正符号
2026
日本物理学会第81回年次大会,東京大学駒場キャンパス,2026年9月14日-17日
青木陽, 桐生翔平, 丹治和史, 武岡 正裕, 早瀬 潤子
線形光学を用いた三成分猫状態の生成とベル測定
2026
第87回応用物理学会秋季学術講演会,北海道大学札幌キャンパス,2026年9月8日-11日
桐生翔平, 青木陽, 丹治和史, 武岡正裕
Private quantum network sensing via loss-tolerant GHZ state distribution
2026
QCrypt 2026, The University of Ottawa, Canada, August 24-28, 2026.
Y. Ueda, M. Ishihara, W.Roga, M. Takeoka
Relaxing required detection efficiency of the Holz-inequality-based device-independent conference key agreement via noisy preprocessing
2026
QCrypt 2026, The University of Ottawa, Canada, August 24-28, 2026.
N. Koyama, M. Ishihara, M. Takeoka
Enhancing noise robustness in device-independent conference key agreement using the asymmetric parity-CHSH inequality
2026
Conference on Quantum Information (CQI) 2026, JW Marriott Dongdaemun Square Seoul, Seoul, Republic of Korea, July 1-3, 2026.
M. Ishihara, W. Roga, M. Takeoka
The metrological cost of heralded non-Gaussian optical states
2026
Conference on Quantum Information (CQI) 2026, JW Marriott Dongdaemun Square Seoul, Seoul, Republic of Korea, July 1-3, 2026.
S. Kiryu, K. Tanji, Y. Ueda, M. Takeoka
Quantum Error Correction Code for Thermal Bosonic States
2026
Conference on Quantum Information (CQI) 2026, JW Marriott Dongdaemun Square Seoul, Seoul, Republic of Korea, July 1-3, 2026.
H. Aoki, S. Kiryu, K. Tanji, M. Takeoka, J. Ishi-Hayase