4 papers
Unbiased Estimation of Conditional Covariance for Quantum Optomechanics
Katsuta Sakai, Nobuyuki Matsumoto
Continuous measurements can prepare macroscopic mechanical oscillators in conditional quantum states, but their covariance is difficult to verify. The conventional retrodictive est…
Space-based cm/kg-scale Laser Interferometer for Quantum Gravity
Nobuyuki Matsumoto, Katsuta Sakai, Kosei Hatakeyama +5
The experimental verification of the quantum nature of gravity represents a milestone in quantum gravity research. Recently, interest has grown for testing it via gravitationally i…
Finite Temperature Transition in Hyper Stealth Dark Matter using Möbius Domain Wall Fermions
Venkitesh Ayyar, Nobuyuki Matsumoto, Aaron S. Meyer +1
The first-order confinement transition of a strongly coupled composite dark matter theory can provide a possible source of gravitational waves in the early universe. In this work,…
Towards a spatial cat state of a massive pendulum
Satoshi Iso, Jinyang Li, Nobuyuki Matsumoto +1
We propose an experiment for constructing a spatial cat state of a suspended mirror with an order of (mg). The mirror is set at the center of two mirrors, creating two…