134 citations · 261 across the 7 of their papers we have counts for
7 papers
Approaching Heisenberg-scalable thermometry with built-in robustness against noise
Da-Jian Zhang, D. M. Tong
It is a major goal in quantum thermometry to reach a scaling of thermometric precision known as Heisenberg scaling but is still in its infancy to date. The main obstacle is t…
Nonadiabatic geometric quantum computation in decoherence-free subspaces based on unconventional geometric phases
P. Z. Zhao, G. F. Xu, D. M. Tong
Nonadiabatic geometric quantum computation in decoherence-free subspaces has received increasing attention due to the merits of its high-speed implementation and robustness against…
General approach to find steady-state manifolds in Markovian and non-Markovian systems
Da-Jian Zhang, Xiao-Dong Yu, Hua-Lin Huang +1
Steady-state manifolds of open quantum systems, such as decoherence-free subspaces and noiseless subsystems, are of great practical importance to the end of quantum information pro…
Universal freezing of asymmetry
Da-Jian Zhang, Xiao-Dong Yu, Hua-Lin Huang +1
Asymmetry of quantum states is a useful resource in applications such as quantum metrology, quantum communication, and reference frame alignment. However, asymmetry of a state tend…
Theorem on the existence of a nonzero energy gap in adiabatic quantum computation
Da-Jian Zhang, Xiao-Dong Yu, D. M. Tong
Adiabatic quantum computation, based on the adiabatic theorem, is a promising alternative to conventional quantum computation. The validity of an adiabatic algorithm depends on the…
Completely positive maps within the framework of direct-sum decomposition of state space
Longjiang Liu, D. M. Tong
We investigate completely positive maps for an open system interacting with its environment. The families of the initial states for which the reduced dynamics can be described by a…