32 citations · 130 across the 17 of their papers we have counts for
18 papers
High-fidelity quantum teleportation through noisy channels via weak measurement and environment-assisted measurement
Sajede Harraz, Jiao-Yang Zhang, Shuang Cong
A perfect teleportation protocol requires pure maximally shared entangled states. While in reality the shared entanglement is severely degraded due to the inevitable interaction wi…
Quantum fisher information protection of N-qubit Greenberger-Horne-Zeilinger state from decoherence
Sajede Harraz, Shuang Cong, Jiaoyang Zhang +1
In this paper we study the protection of N-qubit Greenberger-Horne- Zeilinger (GHZ) state and generalized N-qubit GHZ states in amplitude damping channel by means of quantum weak m…
Comparison of quantum state protection against decoherence via weak measurement, a survey
Sajede Harraz, Shuang Cong, Juan J. Nieto
One of the crucial tasks in quantum systems is to reduce the effects of decoherence due to the unavoidable interactions between a system and its environment. Many protection scheme…
On-line Quantum State Estimation Using Continuous Weak Measurement and Compressed Sensing
S. Cong, K. Li, S. Harraz +2
We propose a new protocol for on-line quantum system estimation on the basis of continuous weak-measurements with the help of compressive sensing and the optimization algorithm. By…
Two-qubit state recovery from amplitude damping based on weak measurement
Sajede Harraz, Shuang Cong, Kezhi Li
In the quantum control process, arbitrary pure or mixed initial states need to be protected from amplitude damping through the noise channel using measurements and quantum control.…
Effective quantum state reconstruction using compressive sensing in NMR quantum computing
J. Yang, S. Cong, X. Liu +2
The number of measurements required to reconstruct the states of quantum systems increases exponentially with the quantum system dimensions, which makes the state reconstruction of…
Fast Reconstruction of High-qubit Quantum States via Low Rate Measurements
K. Li, J. Zhang, S. Cong
Due to the exponential complexity of the resources required by quantum state tomography (QST), people are interested in approaches towards identifying quantum states which require…
State of the Art and Prospects of Structured Sensing Matrices in Compressed Sensing
Kezhi Li, Shuang Cong
Compressed sensing (CS) enables people to acquire the compressed measurements directly and recover sparse or compressible signals faithfully even when the sampling rate is much low…
A Convergent control strategy for quantum systems
Shuang Cong, Yuesheng Lou, Jianxiu Liu +1
In the interaction picture, a sufficient and necessary condition that guarantees the convergence of closed quantum control system is proposed in this paper. Theoretical derivation…
Optimized Dynamical Decoupling in Ξ-Type n-Level Quantum Systems
Linping Chan, Shuang Cong
In this paper, we first design a type of Bang-Bang (BB) operation group to reduce the phase decoherence in a Ξ-type n-level quantum system based on the dynamical decoupling mechani…
A Robust Compressive Quantum State Tomography Algorithm Using ADMM
Kezhi Li, Shuang Cong
The possible state space dimension increases exponentially with respect to the number of qubits. This feature makes the quantum state tomography expensive and impractical for ident…
Ultrafast Manipulation of a Double Quantum Dot via Lyapunov Control Method
Shuang Cong, Ming-yong Gao, Long-zhen Hu +3
For a double quantum dot (DQD) system, here we propose alternative ultrafast manipulate approach: Lyapunov control method, to transfer the state from R to L on the picosecond scale…
Operator Preparation and Characteristic Analysis of Open Quantum Systems Based on the Lyapunov Control Method
Jie Wen, Shuang Cong
The control laws based on quantum Lyapunov control method are designed to prepare operators for two level open quantum systems in this paper. A novel Lyapunov function is proposed…
A Survey of Quantum Lyapunov Control Methods
Shuang Cong, Fangfang Meng
The condition of a quantum Lyapunov-based control which can be well used in a closed quantum system is that the method can make the system convergent but not just stable. In the co…
Quantum Lyapunov Control Based on the Average Value of an Imaginary Mechanical Quantity
Shuang Cong, Fangfang Meng, Sen Kuang
The convergence of closed quantum systems in the degenerate cases to the desired target state by using the quantum Lyapunov control based on the average value of an imaginary mecha…
Characteristics Analysis and State Transfer for non-Markovian Open Quantum Systems
Shuang Cong, Longzhen Hu, Fei Yang +1
The weak-coupled two-level open quantum system described by non-Markovian Time-convolution-less master equation is investigated in this paper. The cut-off frequency, coupling const…
Implicit Lyapunov Control for the Quantum Liouville Equation
Shuang Cong, Fangfang Meng, Jianxiu Liu
A quantum system whose internal Hamiltonian is not strongly regular or/and control Hamiltonians are not full connected, are thought to be in the degenerate cases. In this paper, co…
Orbit Tracking Control of Quantum Systems
Shuang Cong, Jianxiu Liu, Fei Yang
The orbit tracking of free-evolutionary target system in closed quantum systems is studied in this paper. Based on the concept of system control theory, the unitary transformation…