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quant-ph2018★ 34 cited
Single photons by quenching the vacuum
Eduardo Sánchez-Burillo, Luis Martín-Moreno, Juan José García-Ripoll +1
Heisenberg's uncertainty principle implies that the quantum vacuum is not empty but fluctuates. These fluctuations can be converted into radiation through nonadiabatic changes in t…
quant-ph2014★ 66 cited
Excited state entanglement in homogeneous fermionic chains
F. Ares, J. G. Esteve, F. Falceto +1
We study the Renyi entanglement entropy of an interval in a periodic fermionic chain for a general eigenstate of a free, translational invariant Hamiltonian. In order to analytical…