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27 papers · 2 filters
Nuclear Spins in a Nanoscale Device for Quantum Information Processing
S. K. Ozdemir, A. Miranowicz, T. Ota +3
Coherent oscillations between any two levels from four nuclear spin states of I=3/2 have been demonstrated in a nanometre-scale NMR semiconductor device, where nuclear spins are al…
Violation of monogamy inequality for higher-dimensional objects
Yong-Cheng Ou
Bipartite quantum entanglement for qutrits and higher-dimensional objects is considered. We analyze the possibility of violation of monogamy inequality, introduced by Coffman, Kund…
Two-photon interference with two independent pseudo-thermal sources
Yan-Hua Zhai, Xi-Hao Chen, Ling-An Wu
The nature of two-photon interference is a subject that has aroused renewed interest in recent years and is still under debate. In this paper we report the first observation of two…
Cavity enhanced light scattering in optical lattices to probe atomic quantum statistics
Igor B. Mekhov, Christoph Maschler, Helmut Ritsch
Different quantum states of atoms in optical lattices can be nondestructively monitored by off-resonant collective light scattering into a cavity. Angle resolved measurements of ph…
An Important Properties of Entanglement: Pairwise Entanglement can Only be Transferred by Entangled Pair
Xiao-Qiang Xi, W. M. Liu
Basing on the calculation of all the pairwise entanglement in the ()-qubit Heisenberg XX open chain with system impurity, we find an important result: pairwise entang…
Optimal Broadcasting of Mixed States
Gui-Fang Dang, Heng Fan
The N to M (M>N) universal quantum broadcasting of mixed states are proposed for qubits system. The broadcasting of mixed states is universal and optimal in the sense that the shri…