Full counting statistics of a chaotic cavity with asymmetric leads

Abstract

We study the statistics of charge transport in a chaotic cavity attached to external reservoirs by two openings of different size which transmit non-equal number of quantum channels. An exact formula for the cumulant generating function has been derived by means of the Keldysh-Green function technique within the circuit theory of mesoscopic transport. The derived formula determines the full counting statistics of charge transport, i.e., the probability distribution and all-order cumulants of current noise. It is found that, for asymmetric cavities, in contrast to other mesoscopic systems, the third-order cumulant changes the sign at high biases. This effect is attributed to the skewness of the distribution of transmission eigenvalues with respect to forward/backward scattering. For a symmetric cavity we find that the third cumulant approaches a voltage-independent constant proportional to the temperature and the number of quantum channels in the leads.

new section on probability distribution and new references added

References in corpus (3)

• Temperature dependent third cumulant of tunneling noise
• Feedback of the electromagnetic environment on current and voltage fluctuations out of equilibrium
• Shot noise from action correlations

Cited by in corpus (8)

• Full Counting Statistics in Strongly Interacting Systems: Non-Markovian Effects
• Systematic approach to statistics of conductance and shot-noise in chaotic cavities
• Nonlinear statistics of quantum transport in chaotic cavities
• Statistics of quantum transport in chaotic cavities with broken time-reversal symmetry
• Full counting statistics of chaotic cavities from classical action correlations
• Full counting statistics of chaotic cavities with many open channels
• Statistics of Transmission Eigenvalues in Two-Dimensional Quantum Cavities: Ballistic versus Stochastic Scattering
• Quasiparticle transport in arrays of chaotic cavities