Year: 2004
Type: article
Abstract: We consider a system of two qubits at the ends of a finite length 1D cavity. This problem is mapped onto the double-Kondo model which is also shown to describe the low-energy physics of a finite-length quantum wire with resonant levels at its ends. At the Toulouse point the ground-state energy and the average populations and correlations of the qubits or resonant levels at zero temperature are computed. These results show that the effective interactions between the qubits or resonant levels can be used to probe their associated Kondo length scale.
Source: Europhysics Letters (EPL)
Authors: S Camalet, J Schriefl, P Degiovanni, F Delduc
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2091776141