11 citations · 20 across the 8 of their papers we have counts for
11 papers
Universal distillation of quantum entanglement
Ryuji Takagi, Kaito Watanabe, Takaya Matsuura +2
Distillable entanglement---the maximum rate of Bell states extractable from the given noisy entangled states via local operations and classical communication (LOCC)---has been a ce…
Exact Critical Curve for Uniform Stabilizer-State Identification
Masahito Hayashi, Yimin Lu
The sample complexity of identifying an unknown pure stabilizer state has been a longstanding problem in quantum information. In this paper, we resolve the entire exact critical cr…
Stabilizer-Public-Key Authentication: Long Stabilizer Public Keys Resist Finite-Copy Forgery Attacks
Masahito Hayashi, Jingtian Zhao, Baichu Yu
We propose an information-theoretic authentication protocol based on a finite supply of long quadratic-stabilizer public-key states over an odd-prime field, where the effective key…
Partial Stabilizer Learning under Fixed Commuting Constraints and the Absence of a Copy-Rate Discount
Masahito Hayashi, Yimin Lu
We consider an unknown pure stabilizer state of \(n\) qudits with a fixed prime local dimension \(p\), together with prescribed commuting Pauli observables. Rather than learning th…
Indefinite causal order strategy does not improve the estimation of group action
Masahito Hayashi
We consider estimation of unknown unitary operation when the set of possible unitary operations is given by a projective unitary representation of a compact group. We show that nei…
General detectability measure
Masahito Hayashi
Distinguishing resource states from resource-free states is a fundamental task in quantum information. We have approached the state detection problem through a hypothesis testing f…
Alexander S. Holevo's Researches in Quantum Information Theory in 20th Century
Masahito Hayashi
This paper reviews Holevo's contributions to quantum information theory during the 20 century. At that time, he mainly studied three topics, classical-quantum channel coding, quant…
Measurement-Device-Independent Detection of Beyond-Quantum State
Baichu Yu, Masahito Hayashi
In quantum theory, a quantum state on a composite system of two parties realizes a non-negative probability with any measurement element with a tensor product form. However, there…
Generalized quantum Arimoto-Blahut algorithm and its application to quantum information bottleneck
Masahito Hayashi, Geng Liu
We generalize the quantum Arimoto-Blahut algorithm by Ramakrishnan et al. (IEEE Trans. IT, 67, 946 (2021)) to a function defined over a set of density matrices with linear constrai…
Analytical calculation formulas for capacities of classical and classical-quantum channels
Masahito Hayashi
We derive an analytical calculation formula for the channel capacity of a classical channel without any iteration while its existing algorithms require iterations and the number of…
Compression for quantum population coding
Yuxiang Yang, Ge Bai, Giulio Chiribella +1
We study the compression of n quantum systems, each prepared in the same state belonging to a given parametric family of quantum states. For a family of states with f independent p…