319 citations · 788 across the 9 of their papers we have counts for
8 papers · 1 filter
One-step achievement of robust multipartite Greenberger-Horne-Zeilinger state and controlled-phase gate via Rydberg interaction
Xiao-Qiang Shao, Tai-Yu Zheng, C. H. Oh +1
We present a proposal for generation of a robust tripartite Greenberger-Horne-Zeilinger state among three-individual neutral Rydberg atoms. By modulating the relation between two-p…
Sufficiency Criterion for the Validity of the Adiabatic Approximation
D M Tong, K Singh, L C Kwek +1
We examine the quantitative condition which has been widely used as a criterion for the adiabatic approximation but was recently found insufficient. Our results indicate that the u…
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…
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…
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…
Kinematic approach to the mixed state geometric phase in nonunitary evolution
D. M. Tong, E. Sjöqvist, L. C. Kwek +1
A kinematic approach to the geometric phase for mixed quantal states in nonunitary evolution is proposed. This phase is manifestly gauge invariant and can be experimentally tested…