1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- The Graduate University for Advanced Studies, SOKENDAIJP143 papers
- National Institutes of Natural SciencesJP76 papers
- The University of TokyoJP75 papers
- The University of OsakaJP59 papers
- Kyoto UniversityJP52 papers
- Tohoku UniversityJP46 papers
- Japan Science and Technology AgencyJP32 papers
- Nagoya UniversityJP30 papers
- Hiroshima UniversityJP27 papers
- High Energy Accelerator Research OrganizationJP26 papers
- RIKENJP26 papers
- Tokyo Institute of TechnologyJP26 papers
32 papers · 1 filter
Transition Path and Interface Sampling of Stochastic Schrödinger Dynamics
Robson Christie, Peter G. Bolhuis, David T. Limmer
We study rare transitions in Markovian open quantum systems driven with Gaussian noise, applying transition path and interface sampling methods to trajectories generated by stochas…
Non-Hermitian Pseudomodes for Strongly Coupled Open Quantum Systems: Unravelings, Correlations and Thermodynamics
Paul Menczel, Ken Funo, Mauro Cirio +2
The pseudomode framework provides an exact description of the dynamics of an open quantum system coupled to a non-Markovian environment. Using this framework, the influence of the…
Dynamics of a quantum system interacting with white non-Gaussian baths: Poisson noise master equation
Ken Funo, Akihito Ishizaki
Quantum systems are unavoidably open to their surrounding degrees of freedom. The theory of open quantum systems is thus crucial to understanding the fluctuations, dissipation, and…
Optimal control for manipulating vibrational wave packets through polarizability interactions induced by non-resonant laser pulses
Reon Ishii, Tomotaro Namba, Hiroyuki Katsuki +2
On the basis of optimal control theory, we numerically study how to optimally manipulate molecular vibrational dynamics by using cycle-averaged polarizability interactions induced…
Optical tweezers throw and catch single atoms
Hansub Hwang, Andrew Byun, Juyoung Park +2
Single atoms movable from one place to another would enable a flying quantum memory that can be used for quantum communication and quantum computing at the same time. Guided atoms,…
Probing excited-state dynamics with quantum entangled photons: Correspondence to coherent multidimensional spectroscopy
Akihito Ishizaki
Quantum light is a key resource for promoting quantum technology. One such class of technology aims to improve the precision of optical measurements using engineered quantum states…
Generation of pseudo-sunlight via quantum entangled photons and the interaction with molecules
Yuta Fujihashi, Ryosuke Shimizu, Akihito Ishizaki
Light incident upon molecules trigger fundamental processes in diverse systems present in nature. However, under natural conditions, such as sunlight illumination, it is impossible…
Hierarchical Equations of Motion Approach to Quantum Thermodynamics
Akihito Kato, Yoshitaka Tanimura
We present a theoretical framework to investigate quantum thermodynamic processes under non-Markovian system-bath interactions on the basis of the hierarchical equations of motion…
Ultrabright narrow-band telecom two-photon source for long-distance quantum communication
Kazuya Niizeki, Kohei Ikeda, Mingyang Zheng +7
We demonstrate an ultrabright narrow-band two-photon source at the 1.5 -μm telecom wavelength for long-distance quantum communication. By utilizing a bow-tie cavity, we obtain a ca…
Scattering of a composite quasiparticle by an impurity on a lattice
Fumika Suzuki, Marina Litinskaya, William G. Unruh
We study scattering of a composite quasiparticle, which possesses a degree of freedom corresponding to relative separation between two bound excitations, by a delta-like impurity p…
Quantification of Concurrence via Weak Measurement
Mikko Tukiainen, Hirokazu Kobayashi, Yutaka Shikano
Since entanglement is not an observable per se, measuring its value in practice is a difficult task. Here we propose a protocol for quantifying a particular entanglement measure, n…
Quantum walks and gravitational waves
Pablo Arnault, Fabrice Debbasch
A new family of discrete-time quantum walks (DTQWs) propagating on a regular D spacetime lattice is introduced. The continuous limit of these DTQWs is shown to coincide with…
Ground-state cooling of dispersively coupled optomechanical system in unresolved sideband regime via dissipatively coupled oscillator
Yu-Xiang Zhang, Shengjun Wu, Zeng-Bing Chen +1
In the optomechanical cooling of a dispersively coupled oscillator, it is only possible to reach the oscillator ground state in the resolved sideband regime, where the cavity-mode…
Advantages of nonclassical pointer states in postselected weak measurements
Yusuf Turek, W. Maimaiti, Yutaka Shikano +2
We investigate, within the weak measurement theory, the advantages of non-classical pointer states over semi-classical ones for coherent, squeezed vacuum, and Schröinger cat states…
Quantum chemistry beyond Born-Oppenheimer approximation on a quantum computer: a simulated phase estimation study
Libor Veis, Jakub Višňák, Hiroaki Nishizawa +2
We present an efficient quantum algorithm for beyond-Born-Oppenheimer molecular energy computations. Our approach combines the quantum full configuration interaction method with th…
The Dynamics of Compact Laser Pulses
S. Goto, R. W. Tucker, T. J. Walton
We discuss the use of a class of exact finite energy solutions to the vacuum source-free Maxwell equations as models for multi- and single cycle laser pulses in classical interacti…
Massless Dirac Equation from Fibonacci Discrete-Time Quantum Walk
Giuseppe Di Molfetta, Lauchlan Honter, Ben B. Luo +2
Discrete-time quantum walks can be regarded as quantum dynamical simulators since they can simulate spatially discretized Schrödinger, massive Dirac, and Klein-Gordon equations. He…
Generation of phase-squeezed optical pulses with large coherent amplitudes by post-selection of single photon and weak cross-Kerr non-linearity
Fumiaki Matsuoka, Akihisa Tomita, Yutaka Shikano
Phase-squeezed light can enhance the precision of optical phase estimation. The larger the photon numbers are and the stronger the squeezing is, the better the precision will be. W…
Post-selected von Neumann measurement with Hermite-Gaussian and Laguerre-Gaussian pointer states
Yusuf Turek, Hirokazu Kobayashi, Tomotada Akutsu +2
Through the von Neumann interaction followed by post-selection, we can extract not only the eigenvalue of an observable of the measured system but also the weak value. In this post…
Aharonov-Bohm effect in the tunnelling of a quantum rotor in a linear Paul trap
Atshushi Noguchi, Yutaka Shikano, Kenji Toyoda +1
Quantum tunnelling is a common fundamental quantum-mechanical phenomenon that originates from the wave-like characteristics of quantum particles. Although the quantum-tunnelling ef…
Stereographical visualization of a polarization state using weak measurements with an optical-vortex beam
Hirokazu Kobayashi, Koji Nonaka, Yutaka Shikano
We propose a stereographical-visualization scheme for a polarization state by two-dimensional imaging of a weak value with a single setup. The key idea is to employ Laguerre-Gaussi…
From Discrete Time Quantum Walk to Continuous Time Quantum Walk in Limit Distribution
Yutaka Shikano
The discrete time quantum walk defined as a quantum-mechanical analogue of the discrete time random walk have recently been attracted from various and interdisciplinary fields. In…
Reply to "Comment on `Optimal probe wave function of weak-value amplification' "
Yuki Susa, Yutaka Shikano, Akio Hosoya
It is pointed out that the "counter example" presented in the Comment is a family of probe wave functions which are increasingly broad as the shift becomes large. Furthermore, the…
Discrete-time quantum walk with feed-forward quantum coin
Yutaka Shikano, Tatsuaki Wada, Junsei Horikawa
Constructing a discrete model like a cellular automaton is a powerful method for understanding various dynamical systems. However, the relationship between the discrete model and i…