Work

Incoherent control and entanglement for two-dimensional coupled systems

Year: 2006

Type: conference-paper

Abstract: We study a new approach to the control of a quantum system S, which uses the coupling of S with a quantum probe P. The external control affects only P, and the accessibility and controllability properties describe to what extent it is possible to drive the state of S by varying the initial state of P and using the interaction between the two systems. In particular, we study the case of two-dimensional system and probe. Two situations are considered: either the total system S + P is a closed one, or it is surrounded by a bath of decoupled harmonic oscillators. We give results on the controllability and accessibility properties of this scheme, and we discuss the relation of these properties with the entangling capability of the interaction between S and P. In particular, we show that the SWAP operator plays a special role.

Source: Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

DOI: 10.1117/12.664735

Authors: Raffaele Romano, Domenico D'Alessandro

Institution: Iowa State University

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

Funder: National Science Foundation

Award: CAREER: A Methodology for Control of Finite Dimensional Quantum Mechanical Systems