Correlation of Supercurrents in Two Distant Mesoscopic SQUID Rings in the Presence of Two-Mode Nonclassical Field
Abstract
In this paper we consider two distant mesoscopic superconducting quantum interference device (SQUID) rings A and B in the presence of two-mode squeezed vacuum state field, and aim to see the effect of the field on the correlation of supercurrents in the two rings. We know the degree of entanglement of the two-mode squeezed vacuum state increases with the squeezing parameter r. In this paper we find that the correlation of the supercurrents increases with the parameter r too, meaning that the correlation of the supercurrents increases with the degree of entanglement of the field.
- Publication:
-
International Journal of Modern Physics B
- Pub Date:
- 2005
- DOI:
- 10.1142/S0217979205029614
- Bibcode:
- 2005IJMPB..19.1965P
- Keywords:
-
- 85.25.Dq;
- 42.50.Dv;
- 85.35.Ds;
- 03.67.Mn;
- Superconducting quantum interference devices;
- Nonclassical states of the electromagnetic field including entangled photon states;
- quantum state engineering and measurements;
- Quantum interference devices;
- Entanglement production characterization and manipulation