<!doctype html public "-//W3C//DTD W3 HTML//EN">
<html><head><style type="text/css"><!--
blockquote, dl, ul, ol, li { padding-top: 0 ; padding-bottom: 0 }
--></style><title>Special MIT Quantum Information Processing Seminar
Announc</title></head><body>
<div>There will be a Physical Mathematics Seminar next week on
Tuesday, November 30 at 14:30 in MIT room 2-338, which should be of
interest to the subscribers of this QIP-Sem mailman list:</div>
<div><br></div>
<hr>
<div align="center"><font size="+2"><b>Design and Optimization of a
Solid State Qubit System</b></font></div>
<div align="center"><br></div>
<div align="center"><i>by</i> Russel Caflisch (<i>Dept. of
Mathematics, UCLA</i>)</div>
<div align="center"><br></div>
<div align="center"><u>ABSTRACT</u></div>
<div><br></div>
<blockquote>This talk will describe the simulation, design and
optimization of a qubit for use in quantum communication or quantum
computation. The qubit is realized as the spin of a single trapped
electron in a semi-conductor quantum dot. The quantum dot and a
quantum wire are formed by the combination of quantum wells and gates.
The design goal for this system is a "double pinchoff", in
which there is a single trapped electron in the dot and a single (or
small number of) conduction states in the wire. Because of
considerable experimental uncertainty in the system parameters, the
optimal design should be "robust", in the sense that it is
far away from unsuccessful designs. We use a Poisson-Schrodinger model
for the electrostatic potential and electron wave function and a
semi-analytic solution of this model. Through a Monte Carlo search,
aided by an analysis of singular points on the design boundary, we
find successful designs and optimize them to achieve maximal
robustness.</blockquote>
<div><br></div>
<hr>
<div>On Monday, November 29 at 16:00 hours in room 4-237, the regular
MIT QIP seminar will feature Prof. Rainer Blatt from the Univ. of
Innsbruck, who will speak on Ion Trap Quantum Computing (abstract to
follow shortly).</div>
</body>
</html>