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quant-ph2019★ 6 cited
Damping modes of harmonic oscillator in open quantum systems
B. A. Tay
Through a set of generators that preserves the hermiticity and trace of density matrices, we analyze the damping of harmonic oscillator in open quantum systems into four modes, dis…
quant-ph2019★ 2 cited
General symmetry in the reduced dynamics of two-level system
B. A. Tay
We study general transformation on the density matrix of two-level system that keeps the expectation value of observable invariant. We introduce a set of generators that yields her…