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most citedDouble species condensate with tunable interspecies interactions

432 citations

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quant-ph2008★ 106 cited

Experimental determination of a nonclassical Glauber-Sudarshan P function

T. Kiesel, W. Vogel, V. Parigi +2

A quantum state is nonclassical if its Glauber-Sudarshan P function fails to be interpreted as a probability density. This quantity is often highly singular, so that its reconstruc…

quant-ph2007★ 67 cited

Exponential complexity and ontological theories of quantum mechanics

Alberto Montina

Ontological theories of quantum mechanics describe a single system by means of well-defined classical variables and attribute the quantum uncertainties to our ignorance about the u…

quant-ph2007★ 43 cited

Two-spin entanglement distribution near factorized states

Fabrizio Baroni, Andrea Fubini, Valerio Tognetti +1

We study the two-spin entanglement distribution along the infinite chain described by the XY model in a transverse field; closed analytical expressions are derived for the…

quant-ph2005★ 205 cited

Single-photon excitation of a coherent state: catching the elementary step of stimulated light emission

Alessandro Zavatta, Silvia Viciani, Marco Bellini

When a single quantum of electromagnetic field excitation is added to the same spatio-temporal mode of a coherent state, a new field state is generated that exhibits intermediate p…

quant-ph2004★ 129 cited

Entanglement and factorized ground states in two-dimensional quantum antiferromagnets

Tommaso Roscilde, Paola Verrucchi, Andrea Fubini +2

Making use of exact results and quantum Monte Carlo data for the entanglement of formation, we show that the ground state of anisotropic two-dimensional S=1/2 antiferromagnets in a…