4 papers · 1 filter
Performance of quantum phase gates with cold trapped atoms
A. Negretti, T. Calarco, M. A. Cirone +1
We examine the performance of a quantum phase gate implemented with cold neutral atoms in microtraps, when anharmonic traps are employed and the effects of finite temperature are a…
Quantifying entanglement with probabilities
Markus A. Cirone
We propose a new approach to the problem of defining the degree of entanglement between two particles in a pure state with Hilbert spaces of arbitrary finite dimensions. The centra…
The s-wave implosion and explosion of free particles
I. Bialynicki-Birula, M. A. Cirone, J. P. Dahl +2
A free quantum particle in two dimensions with vanishing angular momentum (s-wave) in the form of a ring-shaped wave packet feels an attractive force towards the center of the ring…
Estimation of quantum channels with finite resources
Markus A. Cirone, Aldo Delgado, Dietmar G. Fischer +3
We investigate the problem of determining the parameters that describe a quantum channel. It is assumed that the users of the channel have at best only partial knowledge of it and…