62 citations · 141 across the 13 of their papers we have counts for
15 papers
Exponential strong converse for blind quantum data compression
Kohdai Kuroiwa
We establish exponential strong converse theorems for blind quantum data compression of finite-dimensional mixed-state sources, with and without entanglement assistance. Blind comp…
Dynamical resource theory of time-reversal symmetry breaking
Jisho Miyazaki, Kohdai Kuroiwa, Mio Murao
Time-reversal symmetry and its violation (T-violation) are fundamental across diverse physics domains, from particle physics to fluctuation theorems and reciprocity. While time-rev…
Conditional disclosure of secrets with quantum resources
Vahid R. Asadi, Kohdai Kuroiwa, Debbie Leung +3
The conditional disclosure of secrets (CDS) primitive is among the simplest cryptographic settings in which to study the relationship between communication, randomness, and securit…
Generalized Quantum Stein's Lemma: Redeeming Second Law of Resource Theories
Hayata Yamasaki, Kohdai Kuroiwa
[Note: After the first version of this manuscript was uploaded, the authors of [Berta, Brandão, Gour, Lami, Plenio, Regula, and Tomamichel, Quantum 7, 1103 (2023)] pointed out an i…
Entanglement cost for infinite-dimensional physical systems
Hayata Yamasaki, Kohdai Kuroiwa, Patrick Hayden +1
We prove that the entanglement cost equals the regularized entanglement of formation for any infinite-dimensional quantum state with finite quantum entropy on at least one…
Robustness- and weight-based resource measures without convexity restriction: Multicopy witness and operational advantage in static and dynamical quantum resource theories
Kohdai Kuroiwa, Ryuji Takagi, Gerardo Adesso +1
Quantum resource theories (QRTs) provide a unified framework to analyze quantum properties as resources for achieving advantages in quantum information processing. The generalized…
Every quantum helps: Operational advantage of quantum resources beyond convexity
Kohdai Kuroiwa, Ryuji Takagi, Gerardo Adesso +1
Identifying what quantum-mechanical properties are useful to untap a superior performance in quantum technologies is a pivotal question. Quantum resource theories provide a unified…
Effect of non-unital noise on random circuit sampling
Bill Fefferman, Soumik Ghosh, Michael Gullans +2
In this work, drawing inspiration from the type of noise present in real hardware, we study the output distribution of random quantum circuits under practical non-unital noise sour…
Averaging gate approximation error and performance of Unitary Coupled Cluster ansatz in Pre-FTQC Era
Kohdai Kuroiwa, Yuya O. Nakagawa
Fault-tolerant quantum computation (FTQC) is essential to implement quantum algorithms in a noise-resilient way, and thus to enjoy advantages of quantum computers even with presenc…
Quantum Car-Parrinello Molecular Dynamics: A Cost-Efficient Molecular Simulation Method on Near-Term Quantum Computers
Kohdai Kuroiwa, Takahiro Ohkuma, Hirokazu Sato +1
In this paper, we propose a cost-reduced method for finite-temperature molecular dynamics on a near-term quantum computer, Quantum Car-Parrinello molecular dynamics (QCPMD). One of…
Rate-Distortion Theory for Mixed States
Zahra Baghali Khanian, Kohdai Kuroiwa, Debbie Leung
This paper is concerned with quantum data compression of asymptotically many independent and identically distributed copies of ensembles of mixed quantum states. The encoder has ac…
Rate Reduction of Blind Quantum Data Compression with Local Approximations Based on Unstable Structure of Quantum States
Kohdai Kuroiwa, Debbie Leung
In this paper, we propose a new protocol for a data compression task, blind quantum data compression, with finite local approximations. The rate of blind data compression is suscep…
Asymptotically Consistent Measures of General Quantum Resources: Discord, Non-Markovianity, and Non-Gaussianity
Kohdai Kuroiwa, Hayata Yamasaki
Quantum resource theories provide a unified framework to quantitatively analyze inherent quantum properties as resources for quantum information processing. So as to investigate th…
Penalty methods for variational quantum eigensolver
Kohdai Kuroiwa, Yuya O. Nakagawa
The variational quantum eigensolver (VQE) is a promising algorithm to compute eigenstates and eigenenergies of a given quantum system that can be performed on a near-term quantum c…
General Quantum Resource Theories: Distillation, Formation and Consistent Resource Measures
Kohdai Kuroiwa, Hayata Yamasaki
Quantum resource theories (QRTs) provide a unified theoretical framework for understanding inherent quantum-mechanical properties that serve as resources in quantum information pro…