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quant-ph2025
Coherence-decoherence interplay in quantum systems due to projective stochastic pulses: The case of Rabi oscillations
Sushanta Dattagupta, Shamik Gupta
The interplay of coherence and decoherence is played out in a three-level quantum system, in which the third level is incoherently coupled to the second one which itself is in cohe…
quant-ph2025
Decoherence of Morse Oscillator in the Presence of Dissipationless Environment
Titir Mukherjee, Arnab Acharya, Sushanta Dattagupta
The much-studied Morse oscillator (MO) is couched here in the context of an open quantum system, in which the interaction with the quantum environment, however, is taken to commute…
quant-ph2024
Weak-coupling limits of the quantum Langevin equation for an oscillator
Aritra Ghosh, Sushanta Dattagupta
The quantum Langevin equation as obtained from the independent-oscillator model describes a strong-coupling situation, devoid of the Born-Markov approximation that is employed in t…