3 papers
quant-ph2026
Scaling-Enhanced Rapid Readout of a Qubit Ensemble Assisted by High-Frequency Detector Modes
Hiroki Nakabayashi, Yuichiro Matsuzaki
Quantum measurements of large qubit ensembles are often performed indirectly by coupling the ensemble to a detector and subsequently measuring the detector. Despite the importance…
quant-ph2026
Exact Markovian Dissipation Requires Singular Energy Resources
Hiroki Nakabayashi
The Gorini--Kossakowski--Lindblad--Sudarshan (GKLS) equation describes irreversible quantum dynamical semigroups. We show that this description cannot be exact under physically reg…
quant-ph2025
Fractional power-law decay in the spontaneous emission of a two-level system
Hiroki Nakabayashi, Hayato Kinkawa, Takano Taira +1
It has been shown for various systems that the decay rate of an unstable quantum system deviates from exponential behavior in short- and long-time regimes associated with memory ef…