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@INPROCEEDINGS{DiVincenzo:824002,
author = {DiVincenzo, David},
title = {{T}he quautm {H}all effect for microwave devices: the
gyrator and the circulator},
reportid = {FZJ-2016-06628},
year = {2016},
abstract = {The Faraday-effect circulator was invented in the 1950's,
based on some fundamental theoretical insights about the
role of nonreciprocity in transmission systems. These
Faraday devices are used successfully at both optical and at
microwave frequencies; the latter have a unique and
essential role in making solid-state quantum computing work.
Also in the 1950's, microwave circulators based on the Hall
effect,were also considered. It was "proved" then that a
Hall bar cannot make a good gyrator (a close cousin to the
circulator). This proof is flawed, and we have shown that
good gyrators are possible in the quantum Hall regime, if
the device is contacted capacitively. We predict that the
resulting Hall circulator can be much more miniaturized than
the Faraday kind, and I will discuss some recent preliminary
experimental efforts in this direction. I will discuss the
relation of this device functionality to the physics of
chiral edge magnetoplasmons in the Hall conductor.},
month = {Nov},
date = {2016-11-07},
organization = {Universität Strasbourg Seminar,
Strasbourg (Frankreich), 7 Nov 2016 - 7
Nov 2016},
subtyp = {Invited},
cin = {IAS-3 / PGI-2},
cid = {I:(DE-Juel1)IAS-3-20090406 / I:(DE-Juel1)PGI-2-20110106},
pnm = {144 - Controlling Collective States (POF3-144)},
pid = {G:(DE-HGF)POF3-144},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/824002},
}