65 citations · 370 across the 31 of their papers we have counts for
31 papers
Solution to the mean king's problem using quantum error-correcting codes
Masakazu Yoshida, Gen Kimura, Takayuki Miyadera +2
We discuss the so-called mean king's problem, a retrodiction problem among non-commutative observables, in the context of error detection. Describing the king's measurement effecti…
Spatially Coupled Quasi-Cyclic Quantum LDPC Codes
Manabu Hagiwara, Kenta Kasai, Hideki Imai +1
We face the following dilemma for designing low-density parity-check codes (LDPC) for quantum error correction. 1) The row weights of parity-check should be large: The minimum dist…
Homophonic Coding Design for Communication Systems Employing the Encoding-Encryption Paradigm
Miodrag J. Mihaljevic, Frederique Oggier, Hideki Imai
This paper addresses the design of a dedicated homophonic coding for a class of communication systems which, in order to provide both reliability and security, first encode the dat…
Physical Equivalence of Pure States and Derivation of Qubit in General Probabilistic Theories
Gen Kimura, Koji Nuida, Hideki Imai
In this paper, we investigate a characterization of Quantum Mechanics by two physical principles based on general probabilistic theories. We first give the operationally motivated…
Quantum Error Correction beyond the Bounded Distance Decoding Limit
Kenta Kasai, Manabu Hagiwara, Hideki Imai +1
In this paper, we consider quantum error correction over depolarizing channels with non-binary low-density parity-check codes defined over Galois field of size . The proposed…
Lazy states: sufficient and necessary condition for zero quantum entropy rates under any coupling to the environment
Cesar A. Rodriguez-Rosario, Gen Kimura, Hideki Imai +1
We find the necessary and sufficient conditions for the entropy rate of the system to be zero under any system-environment Hamiltonian interaction. We call the class of system-envi…