3,029 research outputs found
Finite time decoherence could be suppressed efficiently in photonic crystal
The decoherence of two initially entangled qubits in anisotropic band gap
photonic crystal has been studied analytically without Born or Markovian
approximation. It is shown that the decoherence dynamics of two qubits in
photonic crystal is greatly different from that of two qubits in vacuum or
subjected to usual non-Markovian reservoir. The results also show that the
finite time decoherence invoked by spontaneous emission could be suppressed
efficiently and the entanglement of the Bell state possesses odd parity is more
easily preserved in photonic crystal than that of the Bell state possesses even
parity under the same condition. A store scheme for entangled particle pair is
proposed.Comment: 4 pages, 7 figure
National Occupational Health Service Policies and Programs for Workers in Small-Scale Industries in China
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/91922/1/AIHAJ2000.pd
Effects of degree distribution in mutual synchronization of neural networks
We study the effects of the degree distribution in mutual synchronization of
two-layer neural networks. We carry out three coupling strategies: large-large
coupling, random coupling, and small-small coupling. By computer simulations
and analytical methods, we find that couplings between nodes with large degree
play an important role in the synchronization. For large-large coupling, less
couplings are needed for inducing synchronization for both random and
scale-free networks. For random coupling, cutting couplings between nodes with
large degree is very efficient for preventing neural systems from
synchronization, especially when subnetworks are scale-free.Comment: 5 pages, 4 figure
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