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8 papers · 2 filters
Introduction to the basics of entanglement theory in continuous-variable systems
J. Eisert, M. B. Plenio
We outline the basic questions that are being studied in the theory of entanglement. Following a brief review of some of the main achievements of entanglement theory for finite-dim…
Performance of quantum phase gates with cold trapped atoms
A. Negretti, T. Calarco, M. A. Cirone +1
We examine the performance of a quantum phase gate implemented with cold neutral atoms in microtraps, when anharmonic traps are employed and the effects of finite temperature are a…
Towards mechanical entanglement in nano-electromechanical devices
J. Eisert, M. B. Plenio, S. Bose +1
We study arrays of mechanical oscillators in the quantum domain and demonstrate how the motions of distant oscillators can be entangled without the need for control of individual o…
Exact decoherence to pointer states in free open quantum systems is universal
J. Eisert
In this paper it is shown that exact decoherence to minimal uncertainty Gaussian pointer states is generic for free quantum particles coupled to a heat bath. More specifically, the…
Optical discrimination between spatial decoherence and thermalization of a massive object
C. Henkel, M. Nest, P. Domokos +1
We propose an optical ring interferometer to observe environment-induced spatial decoherence of massive objects. The object is held in a harmonic trap and scatters light between de…
Multi-party entanglement in graph states
M. Hein, J. Eisert, H. J. Briegel
Graph states are multi-particle entangled states that correspond to mathematical graphs, where the vertices of the graph take the role of quantum spin systems and edges represent I…