Artículos de revistas
Controlling open quantum systems using fast transitions
Poggi, Pablo Matías; Lombardo, Fernando Cesar; Wisniacki, Diego Ariel; Controlling open quantum systems using fast transitions; American Physical Society; Physical Review A: Atomic, Molecular and Optical Physics; 87; 2; 13-2-2013; 22315-22315
Poggi, Pablo Matías
Lombardo, Fernando Cesar
Wisniacki, Diego Ariel
Unitary control and decoherence appear to be irreconcilable in quantum mechanics. When a quantum system interacts with an environment, control strategies usually fail due to decoherence. In this article we implement a time-optimal unitary control protocol suitable for quantum open systems. The method is based on successive diabatic and sudden switch transitions in the avoided crossings of the energy spectra of closed systems. We show that the speed of this control protocol meets the fundamental bounds imposed by the quantum speed limit, thus making this scheme ideal for application where decoherence needs to be avoided. We show that this method can achieve complex control strategies with high accuracy in quantum open systems.