12 citations · 28 across the 11 of their papers we have counts for
4 papers · 2 filters
Decoherence of spin superposition state caused by a quantum electromagnetic field
Kensuke Gallock-Yoshimura, Yuuki Sugiyama, Akira Matsumura +1
In this study, we investigate the decoherence of a spatially superposed electrically neutral spin- particle in the presence of a relativistic quantum electromagnetic field…
Feasible generation of gravity-induced entanglement by using optomechanical systems
Daisuke Miki, Akira Matsumura, Kazuhiro Yamamoto
We report the feasibility of detecting the gravity-induced entanglement (GIE) with optomechanical systems, which is the first investigation that clarifies the feasible experimental…
Large violation of Leggett-Garg inequalities with coherent-state projectors for a harmonic oscillator and chiral scalar field
Tomoya Hirotani, Akira Matsumura, Yasusada Nambu +1
We investigate violations of Leggett-Garg inequalities (LGIs) for a harmonic oscillator and a (1+1)-dimensional chiral scalar field with coherent-state projectors, which is equival…
Quantumness of gravitational field: A perspective on monogamy relation
Yuuki Sugiyama, Akira Matsumura, Kazuhiro Yamamoto
Understanding the phenomenon of quantum superposition of gravitational fields induced by massive quantum particles is an important starting point for quantum gravity. The purpose o…