5 papers · 2 filters
Multi-parameter estimation enhanced by level crossing Hamiltonian structure with Bayesian feedback
Ryo Tatsumi, Le Bin Ho, Hiroaki Matsueda
Level crossings, where two quantum energy levels intersect, are ubiquitous in quantum systems and play a central role in controlling quantum dynamics. In this study, we establish a…
On Identification of Heat and Work in Quantum Many-Body Systems with Local Operations and Classical Communication
Hiroaki Matsueda
How we identify heat and work is a fundamental question in modern quantum thermodynamics. Usually, heat and work are attributed to changes in the density matrix and the Hamiltonian…
Connecting Density Matrix Spectroscopy to Biexciton Entanglement Dynamics
Yusuke Masaki, Takashi Otaki, Hiroaki Matsueda
Quantum entanglement is one of the most intriguing features of quantum mechanics. To investigate the entanglement between two excitons in a biexciton, an experimental technique cal…
Continuous Reset-Induced Phase Transition in Measurement-Free Random Quantum Circuits
Hinata Yokoyama, Kengo Anzai, Dina Syverud-Lindland +2
We study a random unitary quantum circuit with only reset channels, which has high feasibility for real quantum devices. In particular, we investigate the many-body statistical phy…
Interference-induced state engineering and Hamiltonian control for noisy collective-spin metrology
Le Bin Ho, Vu Xuan Tung Duong, Nozomu Takahashi +1
Interference provides a fundamental mechanism for generating and manipulating entanglement in many-body quantum systems. Here, we develop an interference framework in which the non…