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quant-ph2004
Electronic and center of mass transitions driven by Laguerre-Gaussian beams
A. Alexandrescu, E. di Fabrizio, D. Cojoc
We derive the interaction Hamiltonian of a Laguerre-Gaussian beam with a simple atomic system, under the assumption of a small spread of the center of mass wave function in compari…
quant-ph2004
s-ordered phase-sum and phase-difference distribuitons of entangled coherent states
Adrian Alexandrescu, Diethard Schiller
The -ordered phase-sum and phase-difference distributions are considered for Bell-like superpositions of two-mode coherent states. The distributions are sensitive, respectively,…
quant-ph2003
Quantum spiral bandwidth of entangled two-photon states
J. P. Torres, A. Alexandrescu, L. Torner
We put forward the concept of quantum spiral bandwidth of the spatial mode function of the two-photon entangled state in spontaneous parametric downconversion. We obtain the bandwi…