41 citations · 81 across the 2 of their papers we have counts for
3 papers
quant-ph2006★ 41 cited
Effective Hamiltonian approach to adiabatic approximation in open systems
X. X. Yi, D. M. Tong, L. C. Kwek +1
The adiabatic approximation in open systems is formulated through the effective Hamiltonian approach. By introducing an ancilla, we embed the open system dynamics into a non-Hermit…
quant-ph2006★ 40 cited
Geometric phase in open systems: beyond the Markov approximation and weak coupling limit
X. X. Yi, D. M. Tong, L. C. Wang +2
Beyond the quantum Markov approximation and the weak coupling limit, we present a general theory to calculate the geometric phase for open systems with and without conserved energy…
quant-ph2004
Operator-sum representation of time-dependent density operators and its applications
D. M. Tong, L. C. Kwek, C. H. Oh +2
We show that any arbitrary time-dependent density operator of an open system can always be described in terms of an operator-sum representation regardless of its initial condition…