Formula of channel matrix for coded quantum signals by classical linear codes over Zm. - Masaki Ota; Hideyuki Kumazawa; Keisuke Shiromoto; Tsuyoshi Sasaki Usuda (ISITA, 2010)

On attainment of the capacity of broadband quantum channel by wavelength division multiplexing. - Yoshio Takamura; Shogo Usami; Tsuyoshi Sasaki Usuda (ISITA, 2010)

Improvement of 2-EPP using quantum error correcting codes and binary search. - Shigeyori Nagahashi; Tsuyoshi Sasaki Usuda; Ichi Takumi (ISITA, 2012)

Property of capacity by WDM for attenuated quantum channel. - Kazuha Ohashi; Tsuyoshi Sasaki Usuda (ISITA, 2012)

Error performance of semi-classical quantum receivers for CPPM signals in KCQ key generation. - Hiro Yamashita; Tsuyoshi Sasaki Usuda; Shogo Usami (ISITA, 2012)

Superiority of 2-EPPs to 1-EPPs with finite entangled resources. - Yoshiaki Yazaki; Shogo Usami; Tsuyoshi Sasaki Usuda (ISITA, 2012)

Minimum-Error Discrimination Between Self-Symmetric Mixed Quantum State Signals. - Kenji Nakahira; Tsuyoshi Sasaki Usuda (IEEE Trans. Inf. Theory, 2012)

A simple approximation of minimum error probability using trace distance. - Shungo Asano; Tsuyoshi Sasaki Usuda (ISITA, 2014)

Quantum gain of coding by polar codes with finite codeword length. - Naoki Iwata; Tsuyoshi Sasaki Usuda (ISITA, 2014)

Error performance of optimum quantum detection for BPSK signals in the presence of phase noise and its robustness. - Shinji Koyama; Tsuyoshi Sasaki Usuda (ISITA, 2014)

Error performance for non-destructive quantum receiver of M-ary coherent-state signals. - Kazuki Sato; Kenji Nakahira; Shogo Usami; Tsuyoshi Sasaki Usuda (ISITA, 2014)

4PSK coherent-state signals can be narrow sense group covariant with respect to F4 by coding. - Minami Tanaka; Asuka Ohashi; Tsuyoshi Sasaki Usuda (ISITA, 2016)

An initial guess of Newton's method for the matrix square root based on a sphere constrained optimization problem. - Sho Mizuno; Yosuke Moriizumi; Tsuyoshi Sasaki Usuda; Tomohiro Sogabe (JSIAM Lett., 2016)

Finding Optimal Solutions for Generalized Quantum State Discrimination Problems. - Kenji Nakahira; Tsuyoshi Sasaki Usuda; Kentaro Kato (IEEE Trans. Inf. Theory, 2017)

Effect of Non-Symmetric Loss on Quantum Reading Using a Quasi-Bell State. - Keita Ishikawa; Tiancheng Wang; Tsuyoshi Sasaki Usuda (ISITA, 2018)

Applying a symmetrization method by coding to non-symmetric mixed-state signals. - Souichi Takahira; Tsuyoshi Sasaki Usuda (ISITA, 2018)

Error performance and robustness of optimum quantum detection for MPSK signals in the presence of phase noise. - Tiancheng Wang; Kenji Nakahira; Tsuyoshi Sasaki Usuda (ISITA, 2018)

Realizing a 2-D Positive Operator-Valued Measure by Local Operations and Classical Communication. - Kenji Nakahira; Tsuyoshi Sasaki Usuda (IEEE Trans. Inf. Theory, 2018)

Simplification of the Calculation of the Channel Matrix for AMPM Coherent-state Signals. - Ryusuke Miyazaki; Mana Yoshida; Tiancheng Wang; Tsuyoshi Sasaki Usuda (ISITA, 2020)

Performance Evaluation of Ghost Imaging with Orthogonal/Non-orthogonal Quantum States in Terms of Image Quality. - Yuto Takahashi; Tiancheng Wang; Shogo Usami; Tsuyoshi Sasaki Usuda (ISITA, 2020)

Effect of Non-Gaussian Noise Due to Beam Wandering on Error Performance of Quantum Measurement. - Tiancheng Wang; Tsuyoshi Sasaki Usuda (ISITA, 2020)

Quantum Illumination using Quasi-Bell States. - Jun Yamauchi; Yuto Takahashi; Tiancheng Wang; Tsuyoshi Sasaki Usuda (ISITA, 2020)

Quantum algorithm for matrix functions by Cauchy's integral formula. - Souichi Takahira; Asuka Ohashi; Tomohiro Sogabe; Tsuyoshi Sasaki Usuda (Quantum Inf. Comput., 2020)

PSK-type asymmetric quantum communication and its attenuation characteristics. - Suguru Sameshima; Tiancheng Wang; Shogo Usami; Tsuyoshi Sasaki Usuda (ISITA, 2022)

Simplification of the Gram Matrix Eigenvalue Problem for Quadrature Amplitude Modulation Signals. - Ryusuke Miyazaki; Tiancheng Wang; Tsuyoshi Sasaki Usuda (Entropy, 2022)

Error Performance of Amplitude Shift Keying-Type Asymmetric Quantum Communication Systems. - Tiancheng Wang; Tsuyoshi Sasaki Usuda (Entropy, 2022)

Quantum algorithms based on the block-encoding framework for matrix functions by contour integrals. - Souichi Takahira; Asuka Ohashi; Tomohiro Sogabe; Tsuyoshi Sasaki Usuda (Quantum Inf. Comput., 2022)

On Optimal Ternary Signal Constellation Maximizing Capacity Under Energy Constraints. - Shion Kitamura; Tiancheng Wang; Souichi Takahira; Tsuyoshi Sasaki Usuda (ISITA, 2024)

Property of Classical Reliability Function for BPSK Signals Coded by Simplex Codes with SRM. - Ken Masaki; Tiancheng Wang; Shogo Usami; Souichi Takahira; Tsuyoshi Sasaki Usuda (ISITA, 2024)

Quantum Deletionllnsertion Errors in Optical Qubits due to Synchronization Error. - Masaki Takekoshi; Shion Kitamura; Tiancheng Wang; Tsuyoshi Sasaki Usuda (ISITA, 2024)

Security enhancement of amplitude-shift keying-type asymmetric quantum communication systems. - Tiancheng Wang; Tsuyoshi Sasaki Usuda (Quantum Inf. Process., 2024)