2024年
Black hole graviton and quantum gravity
Yusuke Kimura
Physica Scripta, 99 045024
Resonance-dominant optomechanical entanglement in open quantum systems,
Cheng Shang and Hongchao Li,
Phys. Rev. Applied 21, 044048
Physical Review Applied
Resonance-dominant optomechanical entanglement in open quantum systems
Motivated by entanglement protection, our work utilizes a resonance effect to enhance optomechanical entanglement in the coherent-state representation. We propo…
Effective light cone and digital quantum simulation of interacting bosons
Tomotaka Kuwahara, Tan Van Vu, Keiji Saito,
Nature Communications 15 (1), 2520（Presented in QIP’23）
Nature
Effective light cone and digital quantum simulation of interacting bosons – Nature Communications
Studying bounds on the speed of information propagation across interacting boson systems is notoriously difficult. Here, the authors find tight bounds for both …
Selected as Editor’s Highlight
Nature
Quantum
In this page, we highlight research papers in the areas of quantum information, computation and communication, quantum technologies, and fundamental aspects …
Phys. Org.
“Scientists investigate information propagation in interacting bosonic systems”
more
Scientists investigate information propagation in interacting bosonic systems
A new study by scientists from Japan explores the propagation of quantum information within interacting boson systems like Bose-Einstein condensates (BECs), rev…
RIKEN Research Highlight
“Boson systems break the finite speed limit”
read more
Boson systems break the finite speed limit
RIKEN researchers have shown that, unlike in systems of fermions, systems of interacting bosons can accelerate the transmission of information
Dissipation, quantum coherence, and asymmetry of finite-time cross-correlations
Tan Van Vu, Van Tuan Vo, Keiji Saito
Physical Review Research 6 (1), 013273
Physical Review Research
Dissipation, quantum coherence, and asymmetry of finite-time cross-correlations
Recent studies have revealed a deep connection between the asymmetry of cross-correlations and thermodynamic quantities in the short-time limit. In this study, …
2023年
Eight-dimensional non-geometric heterotic strings and enhanced gauge groups
Yusuke Kimura
The European Physical Journal Special Topics, 232(23), 3697-3704
SpringerLink
Eight-dimensional non-geometric heterotic strings and enhanced gauge groups – The European Physical …
Some constructions in string theory are linked to noncommutative geometry. Non-geometric strings are among such constructions. Non-geometric strings are related…
Analytical approach to higher-order correlation functions in U(1) symmetric systems
Zhi-Guang Lu, Cheng Shang, Ying Wu, Xin-You Lü
Physical Review A 108, 053703
Physical Review A
Analytical approach to higher-order correlation functions in U(1) symmetric systems
We derive a compact analytical solution of the $n\mathrm{th}$-order equal-time correlation functions by using scattering matrix ($S$ matrix) under a weak cohere…
Universal bounds on the performance of information-thermodynamic engine
Tomohiro Tanogami, Tan Van Vu, Keiji Saito
Physical Review Research 5 (4), 043280
Physical Review Research
Universal bounds on the performance of information-thermodynamic engine
We investigate fundamental limits on the performance of information processing systems from the perspective of information thermodynamics. We first extend the t…
Convergence condition of simulated quantum annealing with a non-stoquastic catalyst
Yusuke Kimura, Hidetoshi Nishimori
Journal of Physics A: Mathematical and Theoretical 56 (16), 165304
2022年
Exponential clustering of bipartite quantum entanglement at arbitrary temperatures
Tomotaka Kuwahara, Keiji Saito
Physical Review X 12 (2), 021022 (2022)（Presented in QIP’22）
Physical Review X
Exponential Clustering of Bipartite Quantum Entanglement at Arbitrary Temperatures
New theorems provide a test of what types of long-range quantum entanglement can survive at nonzero temperatures, revealing a fundamental aspect of macroscopic …
Press Release
” It takes three to tangle: long-range quantum entanglement needs three-way interaction”
