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Article overview
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How to Measure the Transmission Phase via a Quantum Dot in a Two-Terminal Interferometer | | Vadim Puller
; Yigal Meir
; | | Date: |
17 Mar 2010 | | Abstract: | Measurement of the transmission phase through a quantum dot (QD) embedded in
an arm of a two-terminal Aharonov-Bohm (AB) interferometer is inhibited by
phase symmetry, i.e. the property that the linear response conductance of a
two-terminal device is an even function of magnetic field. It is demonstrated
that in a setup consisting of an interferometer with a QD in each of its arms,
with one of the QDs capacitively coupled to a nearby quantum point contact
(QPC), phase symmetry is broken when a finite voltage bias is applied to the
QPC. The transmission phase via the uncoupled QD can then be deduced from the
amplitude of the odd component of the AB oscillations. | | Source: | arXiv, 1003.3403 | | Services: | Forum | Review | PDF | Favorites | |
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