Quantum discord in the dynamical Casimir effect
Artikel i vetenskaplig tidskrift, 2015

We analyze the generation of quantum discord by means of the dynamical Casimir effect in superconducting wave guides modulated by superconducting quantum interferometric devices. We show that for realistic experimental parameters, the conditions for the existence of quantum discord are less demanding than the previously considered for quantum entanglement or nonclassicality. These results could facilitate the experimental confirmation of the quantum nature of the dynamical Casimir effect radiation. Moreover, the states with nonzero discord and zero entanglement generated by the dynamical Casimir effect are a useful resource for quantum cryptography.

Författare

C. Sabín

University of Nottingham

I. Fuentes

Universität Wien

University of Nottingham

Göran Johansson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Physical Review A - Atomic, Molecular, and Optical Physics

1050-2947 (ISSN) 1094-1622 (eISSN)

Vol. 92 1 012314

Ämneskategorier

Atom- och molekylfysik och optik

Nanoteknik

DOI

10.1103/PhysRevA.92.012314