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13 papers · 2 filters
Quantum information storage and state transfer based on spin systems
Z. Song, C. P. Sun
The idea of quantum state storage is generalized to describe the coherent transfer of quantum information through a coherent data bus. In this universal framework, we comprehensive…
Engineering antiferromagnetic Heisenberg spin chains for maximizing of the groundstate entanglement
R. Xin, Z. Song, C. P. Sun
We study the correlation function and concurrence for the eigenstates with zero spin of engineered Heisenberg models to explore the entanglement property. It is shown that the tota…
Correlated Quantum Memory: Manipulating Atomic Entanglement via Electromagnetically Induced Transparency
H. Jing, X. -J. Liu, M. -L. Ge +1
We propose a feasible scheme of quantum state storage and manipulation via electromagnetically induced transparency (EIT) in flexibly multi-ensembles of three-level atoms.…
Dynamical Symmetry and Quantum Information Processing with Electromagnetically Induced Transparency
Xiong-Jun Liu, Hui Jing, Xin Liu +1
We study in detail the interesting dynamical symmetry and its applications in various atomic systems with electromagnetically induced transparency (EIT) in this paper. By discoveri…
Generation of Two-Flavor Vortex Atom Laser from a Five-State Medium
Xiong-Jun Liu, Hui Jing, Xin Liu +1
Two-flavor atom laser in a vortex state is obtained and analyzed via electromagnetically induced transparency (EIT) technique in a five-level type system by using two probe lig…
On the Harmonic approximation for large Josephson junction coupling charge qubits
T. Shi, B. Chen, Z. Song +1
We revisit the harmonic approximation (HA) for a large Josephson junction interacting with some charge qubits through the variational approach for the quantum dynamics of the junct…