TY - JOUR
T1 - Phase measurement in the mesoscopic Aharonov-Bohm interferometer
AU - Aharony, A.
AU - Entin-Wohlman, O.
AU - Halperin, B. I.
AU - Imry, Y.
PY - 2002/9/15
Y1 - 2002/9/15
N2 - Mesoscopic solid state Aharonov-Bohm interferometers have been used to measure the "intrinsic" phase, αQD, of the resonant quantum transmission amplitude through a quantum dot (QD). For a two-terminal "closed" interferometer, which conserves the electron current, Onsager's relations require that the measured phase shift β only "jumps" between 0 and π. Additional terminals open the interferometer but then β depends on the details of the opening. Using a theoretical model, we present quantitative criteria (which can be tested experimentally) for β to be equal to the desired αQD: the "lossy" channels near the QD should have both a small transmission and a small reflection.
AB - Mesoscopic solid state Aharonov-Bohm interferometers have been used to measure the "intrinsic" phase, αQD, of the resonant quantum transmission amplitude through a quantum dot (QD). For a two-terminal "closed" interferometer, which conserves the electron current, Onsager's relations require that the measured phase shift β only "jumps" between 0 and π. Additional terminals open the interferometer but then β depends on the details of the opening. Using a theoretical model, we present quantitative criteria (which can be tested experimentally) for β to be equal to the desired αQD: the "lossy" channels near the QD should have both a small transmission and a small reflection.
UR - http://www.scopus.com/inward/record.url?scp=0037105093&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.66.115311
DO - 10.1103/PhysRevB.66.115311
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AN - SCOPUS:0037105093
SN - 0163-1829
VL - 66
SP - 1153111
EP - 1153117
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 11
M1 - 115311
ER -