48 citations · 251 across the 39 of their papers we have counts for
38 papers
Minimum time generation of SU(2) transformations with asymmetric bounds on the controls
Raffaele Romano
We study how to generate in minimum time special unitary transformations for a two-level quantum system under the assumptions that: (i) the system is subject to a constant drift, (…
Minimum time control of a pair of two-level quantum systems with opposite drifts
Raffaele Romano, Domenico D'Alessandro
In this paper we solve two equivalent time optimal control problems. On one hand, we design the control field to implement in minimum time the SWAP (or equivalent) operator on a tw…
Is a description deeper than the quantum one possible?
Giancarlo Ghirardi, Raffaele Romano
Recently, it has been argued that quantum mechanics is a complete theory, and that different quantum states do necessarily correspond to different elements of reality, under the as…
Geometric analysis of minimum time trajectories for a two-level quantum system
Raffaele Romano
We consider the problem of controlling in minimum time a two-level quantum system which can be subject to a drift. The control is assumed to be bounded in magnitude, and to affect…
Collapse Models and Perceptual Processes
G. C. Ghirardi, R. Romano
Theories including a collapse mechanism have been presented various years ago. They are based on a modification of standard quantum mechanics in which nonlinear and stochastic term…
On Kalamidas' proposal of faster than light quantum communication
GianCarlo Ghirardi, Raffaele Romano
In a recent paper, Kalamidas has advanced a new proposal of faster than light communication which has not yet been proved invalid. In this paper, by strictly sticking to the standa…