505 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- RIKEN Center for Advanced PhotonicsJP177 papers
- Computing CenterRU106 papers
- The University of TokyoJP97 papers
- RIKENJP79 papers
- RIKEN Center for Emergent Matter ScienceJP57 papers
- University of MichiganUS51 papers
- RIKEN Center for Computational ScienceJP45 papers
- The University of OsakaJP38 papers
- Pioneer (Japan)JP29 papers
- Japan Science and Technology AgencyJP26 papers
- Tokyo University of ScienceJP24 papers
- Kyoto UniversityJP14 papers
49 papers · 1 filter
Characterisation of silicon photomultipliers in a dilution refrigerator down to 9.4 mK towards a cryogenic cosmic-ray muon veto system
DMC Collaboration, A. Kemp, S. Autti +30
We report the characterisation of a FBK NUV-HD-cryo silicon photomultiplier (SiPM) sensor operated in a 9.4 0.2 mK environment inside a dilution refrigerator, towards the dev…
A sine-square deformation approach to quantum critical points in one-dimensional systems
Yuki Miyazaki, Shiori Tanigawa, Giacomo Marmorini +2
We propose a method to determine the quantum phase boundaries of one-dimensional systems using sine-square deformation (SSD). Based on the proposition, supported by several exactly…
Deterministic Quantum Communication Between Fixed-Frequency Superconducting Qubits via Broadband Resonators
Takeaki Miyamura, Zhiling Wang, Kohei Matsuura +5
Quantum communication between remote chips is essential for realizing large-scale superconducting quantum computers. For such communication, itinerant microwave photons propagating…
Search for high-frequency gravitational waves via re-analysis of cavity axion data
Younggeun Kim, Jordan Gué, Changhao Xu +17
Monochromatic high-frequency gravitational waves (HFGW) provide a distinctive probe of new physics scenarios, most notably axion clouds around rotating black holes formed via super…
Single-shot conditional displacement gate between a trapped atom and traveling light
Seigo Kikura, Hayato Goto, Fumiya Hanamura +1
We propose a single-shot conditional displacement gate between a trapped atom as the control qubit and a traveling light pulse as the target oscillator, mediated by an optical cavi…
Repulsive-Interaction-Driven Topological Superconductivity in a Landau Level Coupled to an -Wave Superconductor
Koji Kudo, Ryota Nakai, Hiroki Isobe +2
A two-dimensional topologically nontrivial state of noninteracting electrons, such as the surface state of a three-dimensional topological insulator, is predicted to realize a topo…
Subsystem many-hypercube codes: High-rate concatenated codes with low-weight syndrome measurements
Ryota Nakai, Hayato Goto
Quantum error-correcting codes (QECCs) require high encoding rate in addition to high threshold unless a sufficiently large number of physical qubits are available. The many-hyperc…
Quantum Error Correction with Superpositions of Squeezed Fock States
Yexiong Zeng, Fernando Quijandría, Clemens Gneiting +1
Bosonic codes, leveraging infinite-dimensional Hilbert spaces for redundancy, offer great potential for encoding quantum information. However, the realization of a practical contin…
Operator dependence and robustness of spacetime-localized response in a quantum critical spin chain
Daichi Imagawa, Keiju Murata, Daisuke Yamamoto
We investigate the phenomenon of spacetime-localized response in a quantum critical spin system, with particular attention to how it depends on the spatial profile and operator con…
High- membrane resonators using ultra-high-stress crystalline TiN films
Yuki Matsuyama, Shotaro Shirai, Ippei Nakamura +6
High-quality-factor () mechanical resonators are essential components for precise sensing and control of mechanical motion at a quantum level. While amorphous materials such as…
Low-energy photoexcitations inside the Mott gap in doped Hubbard and t-J ladders
Sumal Chandra, Kazuya Shinjo, Shigetoshi Sota +2
We investigate changes in the optical conductivity of doped Mott insulators by tuning ultrashort pump pulses to target either the Drude or low-energy absorption regions. Using a ho…
Nontrivial multi-product commutation relation toward reducing T-count in sequential Pauli-based computation
Yusei Mori, Hideaki Hakoshima, Keisuke Fujii
Quantum compilers that reduce the number of T gates are essential for minimizing the overhead of fault-tolerant quantum computation. Achieving further T-count reduction calls for i…
Exact description of fermionic reservoirs via purified damped ancillary fermions
Pengfei Liang, Neill Lambert, Mauro Cirio
We present a method for the modeling of fermionic reservoirs using a new class of ancillary damped fermions, dubbed purified pseudofermions, which exhibit unusual free correlations…
Dissipationless dynamics of spin supersolid states in a spin-1/2 triangular antiferromagnet with impurities
Yixuan Huang, Yuan Gao, Wei Li +2
Motivated by recent experimental evidence for spin supersolid states in triangular-lattice compounds, we numerically investigate the dynamical properties of magnetic field-induced…
Floquet theory and applications in open quantum and classical systems
Masahiro Sato, Tatsuhiko N. Ikeda
This article reviews theoretical methods for analyzing Floquet engineering (FE) phenomena in open (dissipative) quantum or classical systems, with an emphasis on our recent results…
Full counting statistics and first-passage times in quantum Markovian processes: Ensemble relations, metastability, and fluctuation theorems
Paul Menczel, Christian Flindt, Fredrik Brange +2
We develop a comprehensive framework for characterizing fluctuations in quantum transport and nonequilibrium thermodynamics using two complementary approaches: full counting statis…
Edge-of-chaos enhanced quantum-inspired algorithm for combinatorial optimization
Hayato Goto, Ryo Hidaka, Kosuke Tatsumura
Nonlinear dynamical systems with continuous variables can be used for solving combinatorial optimization problems with discrete variables. Numerical simulations of them are also us…
Generation of frequency-bin-encoded dual-rail cluster states via time-frequency multiplexing of microwave photonic qubits
Zhiling Wang, Takeaki Miyamura, Yoshiki Sunada +4
Cluster states are a class of multi-qubit entangled states with broad applications such as quantum metrology and one-way quantum computing. Here, we present a protocol to generate…
On the commutator scaling in Hamiltonian simulation with multi-product formulas
Kaoru Mizuta
A multi-product formula (MPF) is a promising approach for Hamiltonian simulation efficiently both in the system size and the inverse allowable error by combinin…
Scalable Simulation of Quantum Many-Body Dynamics with Or-Represented Quantum Algebra
Lukas Broers, Rong-Yang Sun, Seiji Yunoki
High-performance numerical methods are essential not only for advancing quantum many-body physics but also for enabling integration with emerging quantum computing platforms. We pr…
Comparison of spin-qubit architectures for quantum error-correcting codes
Mauricio Gutiérrez, Juan S. Rojas-Arias, David Obando +1
We investigate the performance of two quantum error-correcting codes, the surface code and the Bacon-Shor code, for implementation with spin qubits in silicon. In each case, we con…
Generation of Motional Squeezed States for Neutral Atoms in Optical Tweezers
Vincent Lienhard, Romain Martin, Yuki Torii Chew +3
Optical tweezers are a powerful tool for the precise positioning of a variety of small objects, including single neutral atoms. Once trapped, atoms can be cooled to the motional gr…
Nonlinear optical response in kagome lattice with inversion symmetry breaking
Xiangyang Liu, Junwen Lai, Jie Zhan +5
The kagome lattice is a fundamental model structure in condensed matter physics and materials science featuring symmetry-protected flat bands, saddle points, and Dirac points. This…
Flux-Trapping Fluxonium Qubit
Kotaro Hida, Kohei Matsuura, Shu Watanabe +1
In pursuit of superconducting quantum computing, fluxonium qubits have recently garnered attention for their large anharmonicity and high coherence at the sweet spot. Towards the l…