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Quantum discord of two-qubit X states

- Qing Chen, Chengjie Zhang, Sixia Yu, X. Yi, C. Oh
- Physics
- 1 February 2011

Quantum discord provides a measure for quantifying quantum correlations beyond entanglement and is very hard to compute even for two-qubit states because of the minimization over all possible… Expand

Effects of reservoir squeezing on quantum systems and work extraction.

- X. L. Huang, Tao Wang, X. Yi
- PhysicsPhysical review. E, Statistical, nonlinear, and…
- 5 November 2012

TLDR

Time-dependent decoherence-free subspace

TLDR

Adiabatic approximation in open systems: an alternative approach

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-Hermitian quantum… Expand

Optimal Lyapunov-based quantum control for quantum systems

- S. Hou, M. A. Khan, D. Dong, I. Petersen, X. Yi
- Physics
- 23 March 2012

Quantum Lyapunov control was developed in order to transform a quantum system from arbitrary initial states to a target state. The idea is to find control fields that steer the Lyapunov function to… Expand

Driving quantum systems into decoherence-free subspaces by Lyapunov control

- X. Yi, X. L. Huang, Chunfeng Wu, C. Oh
- Physics
- 7 August 2009

We present a scheme to drive a finite-dimensional quantum system into the decoherence-free subspaces(DFS) by Lyapunov control. Control fields are established by Lyapunov function. This proposal works… Expand

An alternative quantum fidelity for mixed states of qudits

- Xiaoguang Wang, Chang-shui Yu, X. Yi
- Mathematics
- 11 July 2008

Quantum computing in optical microtraps based on the motional states of neutral atoms

- K. Eckert, J. Mompart,
+4 authors M. Lewenstein - Physics
- 14 June 2002

We investigate quantum computation with neutral atoms in optical microtraps where the qubit is implemented in the motional states of the atoms, i.e., in the two lowest vibrational states of each… Expand

Adiabatic evolution of decoherence-free subspaces and its shortcuts

- S. L. Wu, X. L. Huang, H. Li, X. Yi
- Physics
- 4 May 2017

The adiabatic theorem and "shortcuts to adiabaticity" for the adiabatic dynamics of time-dependent decoherence-free subspaces are explored in this paper. Starting from the definition of the dynamical… Expand

Entanglement of two atoms through different couplings and thermal noise

The entanglement of two atoms is studied when the two atoms are coupled to a single-mode thermal field with different couplings. The different couplings of the two atoms is favourable to… Expand

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