3 papers
quant-ph2026
The two-time Leggett-Garg inequalities of a superconducting qubit interacting with thermal photons in a cavity
Hiroo Azuma
In this paper, we study the two-time Leggett-Garg (LG) inequalities of a quantum optical model that appears in the Josephson-junction quantum bit (qubit) interacting with an extern…
quant-ph2025
Quasiperiodic trajectories drawn by the Bloch vector of the thermal multiphoton Jaynes-Cummings model
Hiroo Azuma
We study the time evolution of the Bloch vector of the thermal multiphoton Jaynes-Cummings model (JCM). If the multiphoton JCM incorporates thermal fluctuations, its corresponding…
quant-ph2024
Insensitivity of the two-photon Jaynes-Cummings model to thermal noise
Hiroo Azuma
We study the thermal effects of the multiphoton Jaynes-Cummings model (JCM) using a thermofield dynamics (TFD) method. Letting the initial state of the whole system for the multiph…