1994/10/20 by Piet W. Brouwer, P. W. Brouwer, C. W. J. Beenakker · 5 citations
Physics and Astronomy · #Quantum and electron transport phenomena #Quantum chaos and dynamical systems #Quantum optics and atomic interactions #cond-mat
paper · pdf · doi:10.1103/physrevb.51.7739
published as Phys.Rev.B 51 (1995) 7739 · 9 pages, REVTeX-3.0, 4 postscript figures appended as self-extracting archive, INLO-PUB-941020b
arxiv created 1994/10/20 · openalex publication_date 1995/03/15 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The effect of an invasive voltage probe on the phase-coherent conduction through a ballistic chaotic cavity is investigated by random-matrix theory. The entire distribution P(G) of the conductance G is computed for the case that the cavity is coupled to source and drain by two point contacts with a quantized conductance of 2e2/h, both in the presence (\ensuremathβ=1) and absence (\ensuremathβ=2) of time-reversal symmetry. The loss of phase coherence induced by the voltage probe causes a crossover from P(G)\ensuremath∝G^\mathrm\ensuremath-1+\mathrm\ensuremathβ/2 to a Gaussian centered at G=e2/h with a \ensuremathβ-dependent width.