Description

2009/12/15, Iñigo Urizar, (UPV/EHU)

Place: Sala de Seminarios del Departamento de Física Teórica e Historia de la Ciencia
Time: 12h.
Title: Number operator-annihilation operator uncertainty as an alternative of the number-phase uncertainty relation
 

Abstract
We consider the number operator-annihilation operator uncertainty as a well behaved alternative of the number-phase uncertainty relation, and examine its properties. We find a formulation in which the bound on the product of uncertainties depends on the expectation value of the particle number. Thus, while the bound is not a constant, it is a quantity that can be easily controlled in many systems. The uncertainty relation allows us to define amplitude squeezing, connecting coherent states to Fock states, without a reference to a phase operator. The uncertainty relation is approximately saturated by number-phase intelligent states.

Biscuits and soft drinks will be provided.