Published April 18, 2003 | Version v1
Journal article Metadata-only

Measuring the transmission phase of a quantum dot in a closed interferometer

Creators

  • 1. School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978 (Israel)
  • 2. Albert Einstein Minerva Center for Theoretical Physics, Weizmann Institute of Science, Rehovot 76100 (Israel)
  • 3. Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot 76100 (Israel)

Description

The electron transmission through a closed Aharonov-Bohm mesoscopic solid-state interferometer, with a quantum dot (QD) on one of the paths, is calculated exactly for a simple model. Although the conductance is an even function of the magnetic flux (due to Onsager's relations), in many cases one can use the measured conductance to extract both the amplitude and the phase of the 'intrinsic' transmission amplitude tD=-i|tD|eiαD through the 'bare' QD. We also propose to compare this indirect measurement with the (hitherto untested) direct relation sin2(αD)≡|tD|2/max(|tD|2)

Additional details

Identifiers

DOI
10.1103/PhysRevLett.90.156802;
arXiv
arXiv:cond-mat/0211350v2;

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
90
Journal Issue
15
Journal Page Range
p. 156802-156802.4
ISSN
0031-9007
CODEN
PRLTAO

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
35041545
Subject category
S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Descriptors DEI
AHARONOV-BOHM EFFECT; ELECTRIC CONDUCTIVITY; ELECTRON TRANSFER; EXACT SOLUTIONS; INTERFEROMETERS; QUANTUM DOTS; QUANTUM ELECTRONICS; QUANTUM MECHANICS
Descriptors DEC
ELECTRICAL PROPERTIES; MATHEMATICAL SOLUTIONS; MEASURING INSTRUMENTS; MECHANICS; NANOSTRUCTURES; PHYSICAL PROPERTIES

Optional Information

Notes
(c) 2003 The American Physical Society