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Singlet Generation in Mixed State Quantum Networks
S. Broadfoot, U. Dorner, D. Jaksch
We study the generation of singlets in quantum networks with nodes initially sharing a finite number of partially entangled bipartite mixed states. We prove that singlets between a…
Towards high-speed optical quantum memories
K. F. Reim, J. Nunn, V. O. Lorenz +5
Quantum memories, capable of controllably storing and releasing a photon, are a crucial component for quantum computers and quantum communications. So far, quantum memories have op…
Quantum interference between charge excitation paths in a solid state Mott insulator
S. Wall, D. Brida, S. R. Clark +10
The competition between electron localization and de-localization in Mott insulators underpins the physics of strongly-correlated electron systems. Photo-excitation, which re-distr…
Simulating and detecting artificial magnetic fields in trapped atoms
Matthias Rosenkranz, Alexander Klein, Dieter Jaksch
A Bose-Einstein condensate exhibiting a nontrivial phase induces an artificial magnetic field in immersed impurity atoms trapped in a stationary, ring-shaped optical lattice. We pr…
Testing quantum nonlocality by generalized quasiprobability functions
Seung-Woo Lee, Hyunseok Jeong, Dieter Jaksch
We derive a Bell inequality based on a generalized quasiprobability function which is parameterized by one non-positive real value. Two types of known Bell inequalities formulated…
Exact matrix product solutions in the Heisenberg picture of an open quantum spin chain
S. R. Clark, J. Prior, M. J. Hartmann +2
In recent work Hartmann et al [Phys. Rev. Lett. 102, 057202 (2009)] demonstrated that the classical simulation of the dynamics of open 1D quantum systems with matrix product algori…