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Entanglement and Disentanglement in Circuit QED Architectures
David Zueco, Georg M. Reuther, Peter Hänggi +1
We propose a protocol for creating entanglement within a dissipative circuit QED network architecture that consists of two electromagnetic circuits (cavities) and two superconducti…
Entanglement Resonance in Driven Spin Chains
Fernando Galve, David Zueco, Sigmund Kohler +2
We consider a spin-1/2 anisotropic XY model with time-dependent spin-spin coupling as means of creating long-distance entanglement. We predict the emergence of significant entangle…
Artificial Brownian motors: Controlling transport on the nanoscale
Peter Hanggi, Fabio Marchesoni
In systems possessing spatial or dynamical symmetry breaking, Brownian motion combined with symmetric external input signals, deterministic or random, alike, can assist directed mo…
Negative conductance in driven Josephson junctions
Marcin Kostur, Lukasz Machura, Jerzy Luczka +2
We investigate an optimal regime of negative-valued conductance, emerging in a resistively and capacitively shunted Josephson junction, which is driven simultaneously by both, a ti…
Fidelity and Entanglement of a Spatially Extended Linear Three-Qubit Register
Roland Doll, Martijn Wubs, Sigmund Kohler +1
We study decoherence of a three-qubit array coupled to substrate phonons. Assuming an initial three-qubit entangled state that would be decoherence-free for identical qubit positio…