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Article overview
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Wave-packet Formalism of Full Counting Statistics | | F. Hassler
; M. V. Suslov
; G. M. Graf
; M. V. Lebedev
; G. B. Lesovik
; G. Blatter
; | | Date: |
1 Feb 2008 | | Abstract: | We make use of the first-quantized wave-packet formulation of the full
counting statistics to describe charge transport in a mesoscopic device. We
derive various expressions for the characteristic function generating the full
counting statistics, accounting for both energy and time dependence in the
scattering process and including exchange effects due to finite overlapping of
the incoming wave packets. We apply our results to describe the generic
statistical properties of a two-fermion scattering event and find, among other
features, sub-binomial statistics for non-entangled incoming states (Slater
rank 1), while entangled states (Slater rank 2) may generate super-binomial
(and even super-poissonian) noise, a feature that can be used as a spin
singlet-triplet detector. Another application is concerned with the constant
voltage case, where we generalize the original result of Levitov-Lesovik to
include effects of energy dependent scattering and finite measurement time,
including short time measurements, where we find a non-binomial result. | | Source: | arXiv, 0802.0143 | | Services: | Forum | Review | PDF | Favorites | |
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