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
58 papers · 1 filter
Pair density wave characterized by a hidden string order parameter
Hao-Kai Zhang, Rong-Yang Sun, Zheng-Yu Weng
A composite pairing structure of superconducting state is revealed by density matrix renormalization group study in a two-leg - model. The pairing order parameter is composed…
Non-Gaussian state generation with time-gated photon detection
Tatsuki Sonoyama, Kazuma Takahashi, Baramee Charoensombutamon +9
Non-Gaussian states of light, which are essential in fault-tolerant and universal optical quantum computation, are typically generated by a heralding scheme using photon detectors.…
Quantitative optical imaging method for surface acoustic waves using optical path modulation
Ryusuke Hisatomi, Kotaro Taga, Ryo Sasaki +3
A Rayleigh-type surface acoustic wave (SAW) is used in various fields as classical and quantum information carriers because of its surface localization, high electrical controllabi…
Minimum Trotterization Formulas for a Time-Dependent Hamiltonian
Tatsuhiko N. Ikeda, Asir Abrar, Isaac L. Chuang +1
When a time propagator for duration consists of two noncommuting parts , Trotterization approximately decomposes the propagator into a product of exponential…
Insulating Phase in Two-dimensional Josephson-Junction Arrays Investigated by Nonlinear Transport
Hiroki Ikegami, Yasunobu Nakamura
We present experimental investigations of transport properties in the insulating phase of two-dimensional Josephson-junction arrays (JJAs) by systematically changing the ratio of J…
All-optical quantum computing using cubic phase gates
Niklas Budinger, Akira Furusawa, Peter van Loock
If suitable quantum optical interactions were available, transforming optical field mode operators in a nonlinear fashion, the all-photonics platform could be one of the strongest…
Controlling inversion and time-reversal symmetries by subcycle pulses in the one-dimensional extended Hubbard model
Kazuya Shinjo, Shigetoshi Sota, Seiji Yunoki +1
Owning to their high controllability, laser pulses have contributed greatly to our understanding of strongly correlated electron systems. However, typical multicycle pulses do not…
Generation of spin squeezing via a fully quantum degenerate parametric amplifier
Yang Liu, Jie Song, Wei Qin +2
Spin squeezing is one of the most attractive methods for realizing high-precision metrology. In this paper, we propose a protocol for generating spin squeezing in an atomic ensembl…
Nonlinear feedforward enabling quantum computation
Atsushi Sakaguchi, Shunya Konno, Fumiya Hanamura +9
Measurement-based quantum computation with optical time-domain multiplexing is a promising method to realize a quantum computer from the viewpoint of scalability. Fault tolerance a…
Noise properties of a Josephson parametric oscillator
Gopika Lakshmi Bhai, Hiroto Mukai, Tsuyoshi Yamamoto +1
We perform the noise spectroscopy of a Josephson parametric oscillator (JPO) by implementing a microwave homodyne interferometric measurement scheme. We observe the fluctuations in…
Parametrized quantum circuit for weight-adjustable quantum loop gas
Rong-Yang Sun, Tomonori Shirakawa, Seiji Yunoki
Motivated by the recent success of realizing the topologically ordered ground state of the exactly solvable toric code model by a quantum circuit on the real quantum device [K. J.…
Axion Dark Matter Search around 4.55 eV with Dine-Fischler-Srednicki-Zhitnitskii Sensitivity
Andrew K. Yi, Saebyeok Ahn, Çağlar Kutlu +29
We report an axion dark matter search at Dine-Fischler-Srednicki-Zhitnitskii sensitivity with the CAPP-12TB haloscope, assuming axions contribute 100\% of the local dark matter den…
Continuous transition from a Landau quasiparticle to a neutral spinon
Jing-Yu Zhao, Shuai A. Chen, Rong-Yang Sun +1
We examine a wavefunction ansatz in which a doped hole can experience a quantum transition from a charge Landau quasiparticle to a neutral spinon as a function of the underlyi…
Millionfold improvement in multivibration-feedback optomechanical refrigeration via auxiliary mechanical coupling
Rui Xu, Deng-Gao Lai, Bang-Pin Hou +2
The simultaneous ground-state refrigeration of multiple vibrational modes is a prerequisite for observing significant quantum effects of multiple-vibration systems. Here we propose…
Charging/discharging mechanism in Mg3Bi2 anode for Mg-ion batteries; The role of the spin-orbit coupling
M. Hussein N. Assadi, Christopher J. Kirkham, Ikutaro Hamada +1
Using density functional calculations, we examine insertion/extraction of Mg ions in Mg3Bi2, an interesting Mg-ion battery anode. We found that a (1 1 0) facet is the most stable t…
Quantum state discrimination in a PT-symmetric system
Dong-Xu Chen, Yu Zhang, Jun-Long Zhao +4
Nonorthogonal quantum state discrimination (QSD) plays an important role in quantum information and quantum communication. In addition, compared to Hermitian quantum systems, parit…
Feedback-based active reset of a spin qubit in silicon
Takashi Kobayashi, Takashi Nakajima, Kenta Takeda +3
Feedback control of qubits is a highly demanded technique for advanced quantum information protocols such as quantum error correction. Here we demonstrate active reset of a silicon…
Postselected quantum hypothesis testing
Bartosz Regula, Ludovico Lami, Mark M. Wilde
We study a variant of quantum hypothesis testing wherein an additional 'inconclusive' measurement outcome is added, allowing one to abstain from attempting to discriminate the hypo…
Monte Carlo study of cuprate superconductors in a four-band - model: Role of orbital degrees of freedom
Hiroshi Watanabe, Tomonori Shirakawa, Kazuhiro Seki +4
Understanding the complex phase diagram of cuprate superconductors is a long-standing challenging problem. Recent studies have shown that orbital degrees of freedom, both Cu …
Probing the symmetry breaking of a light--matter system by an ancillary qubit
Shuai-Peng Wang, Alessandro Ridolfo, Tiefu Li +4
Hybrid quantum systems in the ultrastrong, and even more in the deep-strong, coupling regimes can exhibit exotic physical phenomena and promise new applications in quantum technolo…
Optimal Hamiltonian simulation for time-periodic systems
Kaoru Mizuta, Keisuke Fujii
The implementation of time-evolution operators , called Hamiltonian simulation, is one of the most promising usage of quantum computers. For time-independent Hamiltonians, qu…
Noise-correlation spectrum for a pair of spin qubits in silicon
J. Yoneda, J. S. Rojas-Arias, P. Stano +5
Semiconductor qubits are appealing for building quantum processors as they may be densely integrated due to small footprint. However, a high density raises the issue of noise corre…
Space-time dual quantum Zeno effect: Interferometric engineering of open quantum system dynamics
Jhen-Dong Lin, Ching-Yu Huang, Neill Lambert +3
Superposition of trajectories, which modify quantum evolutions by superposing paths through interferometry, has been utilized to enhance various quantum communication tasks. Howeve…
Near-Quantum-Noise Axion Dark Matter Search at CAPP around 9.5 eV
Jinsu Kim, Ohjoon Kwon, Çağlar Kutlu +9
We report the results of an axion dark matter search over an axion mass range of 9.39-9.51 eV. A flux-driven Josephson parametric amplifier (JPA) was added to the cryogenic rece…