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Register a new userExtremal states for photon number and quadratures as gauges for nonclassicality
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Added by
Luis L. Sanchez. Soto
Publication date
2014
fields
Physics
and research's language is
English
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Rotated quadratures carry the phase-dependent information of the electromagnetic field, so they are somehow conjugate to the photon number. We analyze this noncanonical pair, finding an exact uncertatinty relation, as well as a couple of weaker inequalities obtained by relaxing some restrictions of the problem. We also find the intelligent states saturating that relation and complete their characterization by considering extra constraints on the second-order moments of the variables involved. Using these moments, we construct performance measures tailored to diagnose photon-added and Schrodinger catlike states, among others.
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