Zobrazeno 1 - 10
of 239
pro vyhledávání: '"MIKI, Daisuke"'
We report the feasibility of detecting the gravity-induced entanglement (GIE) with optomechanical systems, which is the first investigation that clarifies the feasible experimental parameters to achieve a signal-to-noise ratio of S/N=1. Our proposal
Externí odkaz:
http://arxiv.org/abs/2406.04361
We evaluate the gravity-induced negativity volume of the generalized Wigner function in a hybrid system consisting of a particle in a two-localized superposition state and an oscillator. The generalized Wigner function can capture the nonclassicality
Externí odkaz:
http://arxiv.org/abs/2311.10980
We investigate the violation of the Leggett-Garg inequalities for a quantum field, focusing on the two-time quasi-probability distribution function of the dichotomic variable with a coarse-grained scalar field. The Leggett-Garg inequalities are viola
Externí odkaz:
http://arxiv.org/abs/2311.02867
We investigate the quantum signature of gravity in optomechanical systems under quantum control. We analyze the gravity-induced entanglement and squeezing in mechanical mirrors in a steady state. The behaviors and the conditions for generating the gr
Externí odkaz:
http://arxiv.org/abs/2311.00563
Autor:
Hatakeyama, Kosei, Miki, Daisuke, Tani, Masaki, Yamasaki, Yuuki, Iso, Satoshi, Adam, Apriadi Salim, Rohim, Ar, Yamamoto, Kazuhiro
We investigate the violation of the Leggett-Garg inequalities for a harmonic oscillator in various quantum states. We focus on the two-time quasi-probability distribution function with a dichotomic variable constructed with the position operator of a
Externí odkaz:
http://arxiv.org/abs/2310.16471
Autor:
Shichijo, Tomoya, Matsumoto, Nobuyuki, Matsumura, Akira, Miki, Daisuke, Sugiyama, Yuuki, Yamamoto, Kazuhiro
We investigated the quantum state of an optomechanical suspended mirror under continuous measurement and feedback control using Wiener filtering. We focus on the impact of the two-mode theory of suspended mirror on the quantum state, which is describ
Externí odkaz:
http://arxiv.org/abs/2303.04511
Autor:
Sugiyama, Yuuki, Shichijo, Tomoya, Matsumoto, Nobuyuki, Matsumura, Akira, Miki, Daisuke, Yamamoto, Kazuhiro
Pendulums have long been used as force sensors due to their ultimately low dissipation (high-quality factor) characteristic. They are widely used in the measurement of the gravitational constant, detection of gravitational waves, and determination of
Externí odkaz:
http://arxiv.org/abs/2212.11056
Autor:
Miki, Daisuke, Matsumoto, Nobuyuki, Matsumura, Akira, Shichijo, Tomoya, Sugiyama, Yuuki, Yamamoto, Kazuhiro, Yamamoto, Naoki
Publikováno v:
Phys. Rev. A 107, 032410 (2023)
This study is aimed at investigating the feasibility of generating quantum entanglement between macroscopic mechanical mirrors in optomechanical systems while under continuous measurement and feedback control. We carefully derive a covariance matrix
Externí odkaz:
http://arxiv.org/abs/2210.13169
We develop an entanglement criterion with third- and fourth-order cumulants to detect the entanglement of non-Gaussian states. The efficiency of the entanglement criterion is investigated for gravitating mirrors in optomechanical systems. We show tha
Externí odkaz:
http://arxiv.org/abs/2108.00662
Publikováno v:
Phys. Rev. D 103, 026017 (2021)
We analyze the dynamics of a gravity-induced entanglement for N massive particles. Considering the linear configuration of these particles, we investigate the entanglement between a specific pair of particles under the influence of the gravitational
Externí odkaz:
http://arxiv.org/abs/2010.05159