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
33 papers · 2 filters
Quantum geometric tensor determines the pure-state i.i.d. conversion rate in the resource theory of asymmetry for any compact Lie group
Koji Yamaguchi, Yosuke Mitsuhashi, Tomohiro Shitara +1
Quantifying physical concepts in terms of the ultimate performance of a given task has been central to theoretical progress, as illustrated by thermodynamic entropy and entanglemen…
Engineering propagating cat states with driving-assisted cavity QED
Seigo Kikura, Hayato Goto, Takao Aoki
We propose a method for generating optical cat states in propagating pulses based on cavity quantum electrodynamics (QED). This scheme uses multiple four-level systems (4LSs) insid…
Efficient tomography of microwave photonic cluster states
Yoshiki Sunada, Shingo Kono, Jesper Ilves +6
Entanglement among a large number of qubits is a crucial resource for many quantum algorithms. Such many-body states have been efficiently generated by entangling a chain of itiner…
Polynomial time constructive decision algorithm for multivariable quantum signal processing
Yuki Ito, Hitomi Mori, Kazuki Sakamoto +1
Quantum signal processing (QSP) and quantum singular value transformation (QSVT) have provided a unified framework for understanding many quantum algorithms, including factorizatio…
High-performance conditional-driving gate for Kerr parametric oscillator qubits
Hiroomi Chono, Hayato Goto
Kerr parametric oscillators (KPOs), two-photon driven Kerr-nonlinear resonators, can stably hold coherent states with opposite-sign amplitudes and are promising devices for quantum…
C3-VQA: Cryogenic Counter-based Co-processor for Variational Quantum Algorithms
Yosuke Ueno, Satoshi Imamura, Yuna Tomida +5
Cryogenic quantum computers play a leading role in demonstrating quantum advantage. Given the severe constraints on the cooling capacity in cryogenic environments, thermal design i…
Fast multiplexed superconducting qubit readout with intrinsic Purcell filtering
Peter A. Spring, Luka Milanovic, Yoshiki Sunada +4
Fast and accurate qubit measurement remains a critical challenge on the path to fault-tolerant quantum computing. In superconducting quantum circuits, fast qubit measurement has be…
Provably Efficient Simulation of 1D Long-Range Interacting Systems at Any Temperature
Rakesh Achutha, Donghoon Kim, Yusuke Kimura +1
We introduce a method that ensures efficient computation of one-dimensional quantum systems with long-range interactions across all temperatures. Our algorithm operates within a qu…
Input-Output Hierarchical Equations Of Motion
Mauro Cirio, Pengfei Liang, Neill Lambert
We derive an extended version of the hierarchical equations of motion (HEOM) to compute output physical properties of a bosonic environment, which is allowed to be initially prepar…
Scalable circuit depth reduction in feedback-based quantum optimization with a quadratic approximation
Don Arai, Ken N. Okada, Yuichiro Nakano +2
Combinatorial optimization problems are one of the areas where near-term noisy quantum computers may have practical advantage against classical computers. Recently a novel feedback…
Entangling Schrödinger's cat states by bridging discrete- and continuous-variable encoding
Daisuke Hoshi, Toshiaki Nagase, Sangil Kwon +9
In quantum information processing, two primary research directions have emerged: one based on discrete variables (DV) and the other on the structure of quantum states in a continuo…
Feedback-driven quantum reservoir computing for time-series analysis
Kaito Kobayashi, Keisuke Fujii, Naoki Yamamoto
Quantum reservoir computing (QRC) is a highly promising computational paradigm that leverages quantum systems as a computational resource for nonlinear information processing. Whil…
A Hybrid Approach to Mitigate Errors in Linear Photonic Bell-State Measurement for Quantum Interconnects
Beate E. Asenbeck, Akito Kawasaki, Ambroise Boyer +4
Optical quantum information processing critically relies on Bell-state measurement, a ubiquitous operation for quantum communication and computing. Its practical realization involv…
ZX Graphical Calculus for Continuous-Variable Quantum Processes
Hironari Nagayoshi, Warit Asavanant, Ryuhoh Ide +5
Continuous-variable (CV) quantum information processing is a promising candidate for large-scale fault-tolerant quantum computation. However, analysis of CV quantum process relies…
Generation of multi-photon Fock states at telecommunication wavelength using picosecond pulsed light
Tatsuki Sonoyama, Kazuma Takahashi, Tomoki Sano +9
Multi-photon Fock states have diverse applications such as optical quantum information processing. For the implementation of quantum information processing, it is desirable that Fo…
Optically-Sampled Superconducting-Nanostrip Photon-Number Resolving Detector for Non-Classical Quantum State Generation
Mamoru Endo, Kazuma Takahashi, Takefumi Nomura +11
Photon number-resolving detectors (PNRDs) are the ultimate optical sensors. Superconducting-nanostrip photon detectors (SNSPDs), traditionally known as ON-OFF detectors, have recen…
Implementing arbitrary multi-mode continuous-variable quantum gates with fixed non-Gaussian states and adaptive linear optics
Fumiya Hanamura, Warit Asavanant, Hironari Nagayoshi +5
Non-Gaussian quantum gates are essential components for optical quantum information processing. However, the efficient implementation of practically important multi-mode higher-ord…
Computable entanglement cost under positive partial transpose operations
Ludovico Lami, Francesco Anna Mele, Bartosz Regula
Quantum information theory is plagued by the problem of regularisations, which require the evaluation of formidable asymptotic quantities. This makes it computationally intractable…
Simulating Floquet scrambling circuits on trapped-ion quantum computers
Kazuhiro Seki, Yuta Kikuchi, Tomoya Hayata +1
Complex quantum many-body dynamics spread initially localized quantum information across the entire system. Information scrambling refers to such a process, whose simulation is one…
Chemistry Beyond the Scale of Exact Diagonalization on a Quantum-Centric Supercomputer
Javier Robledo-Moreno, Mario Motta, Holger Haas +14
A universal quantum computer can simulate diverse quantum systems, with electronic structure for chemistry offering challenging problems for practical use cases around the hundred-…
Boosting the generation rate of squeezed single-photon states by generalized photon subtraction
Hiroko Tomoda, Akihiro Machinaga, Kan Takase +9
In optical quantum information processing with continuous variables, optical non-Gaussian quantum states are essential for universal and fault-tolerant quantum computation. Experim…
Virtual quantum resource distillation: General framework and applications
Ryuji Takagi, Xiao Yuan, Bartosz Regula +1
We develop the general framework of virtual resource distillation -- an alternative distillation strategy proposed in [Phys. Rev. Lett. 132, 050203 (2024)], which extends conventio…
Quantum computing topological invariants of two-dimensional quantum matter
Marcel Niedermeier, Marc Nairn, Christian Flindt +1
Quantum algorithms provide a potential strategy for solving computational problems that are intractable by classical means. Computing the topological invariants of topological matt…
Thermal Area Law in Long-Range Interacting Systems
Donghoon Kim, Tomotaka Kuwahara, Keiji Saito
The area law of the bipartite information measure characterizes one of the most fundamental aspects of quantum many-body physics. In thermal equilibrium, the area law for the mutua…