195 citations · 1.7k across the 54 of their papers we have counts for
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Post-Hartree-Fock method in Quantum Chemistry for Quantum Computer
Yutaka Shikano, Hiroshi C. Watanabe, Ken M. Nakanishi +1
Quantum computational chemistry is a potential application of quantum computers that is expected to effectively solve several quantum-chemistry problems, particularly the electroni…
Detecting Temporal Correlation via Quantum Random Number Generation
Yutaka Shikano, Kentaro Tamura, Rudy Raymond
All computing devices, including quantum computers, must exhibit that for a given input, an output is produced in accordance with the program. The outputs generated by quantum comp…
Proceedings 9th International Conference on Quantum Simulation and Quantum Walks
Giuseppe Di Molfetta, Vivien Kendon, Yutaka Shikano
This volume contains a selection of papers presented at the 9th in a series of international conferences on Quantum Simulation and Quantum Walks (QSQW). During this event, we worke…
Quantum Random Numbers generated by the Cloud Superconducting Quantum Computer
Kentaro Tamura, Yutaka Shikano
A cloud quantum computer is similar to a random number generator in that its physical mechanism is inaccessible to its users. In this respect, a cloud quantum computer is a black b…
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…
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…
Why the "classical" explanation of weak values by Ferrie and Combes does not work: a comment on Phys. Rev. Lett. 113, 120404 (2014)
Holger F. Hofmann, Masataka Iinuma, Yutaka Shikano
In Phys. Rev. Lett. 113, 120404 (2014) [arXiv:1403.2362], Ferrie and Combes claim that weak values could be a statistical artifact caused by correlations between the disturbance an…
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…
Discrete time quantum walk with nitrogen-vacancy centers in diamond coupled to a superconducting flux qubit
Ali Ü. C. Hardal, Peng Xue, Yutaka Shikano +2
We propose a quantum-electrodynamics scheme for implementing the discrete-time, coined quantum walk with the walker corresponding to the phase degree of freedom for a quasi-magnon…
Extracting joint weak values from two-dimensional spatial displacements
Hirokazu Kobayashi, Graciana Puentes, Yutaka Shikano
The joint weak value is a counterfactual quantity related to quantum correlations and quantum dynamics, which can be retrieved via weak measurements, as initiated by Aharonov and c…
Optimal Probe Wavefunction of Weak-Value Amplification
Yuki Susa, Yutaka Shikano, Akio Hosoya
The weak measurement proposed by Aharonov and his colleagues extracts information of a physical quantity of the system by the post selection as the shifts of the argument of the pr…
Theory of "Weak Value" and Quantum Mechanical Measurements
Yutaka Shikano
We review the definition and the concepts of the weak values and some measurement model to extract the weak value. This material is based on the author Ph.D. thesis "Time in Weak V…
A reply to "Problems with modelling closed timelike curves as post-selected teleportation"
Seth Lloyd, Lorenzo Maccone, Raul Garcia-Patron +8
In arXiv:1107.4675 Ralph uses our post-selection model of closed timelike curves (P-CTC) to construct an "unproven-theorem" paradox, and claims that this voids our argument that P-…
Notes on Inhomogeneous Quantum Walks
Yutaka Shikano, Hosho Katsura
We study a class of discrete-time quantum walks with inhomogeneous coins defined in [Y. Shikano and H. Katsura, Phys. Rev. E {\bf 82}, 031122 (2010)]. We establish symmetry propert…
Crossovers induced by discrete-time quantum walks
Kota Chisaki, Norio Konno, Etsuo Segawa +1
We consider crossovers with respect to the weak convergence theorems from a discrete-time quantum walk (DTQW). We show that a continuous-time quantum walk (CTQW) and discrete- and…
Survival probability in a one-dimensional quantum walk on a trapped lattice
Meltem Gonulol, Ekrem Aydiner, Yutaka Shikano +1
The dynamics of the survival probability of quantum walkers on a one-dimensional lattice with random distribution of absorbing immobile traps are investigated. The survival probabi…