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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Georgia","serif"">Please join us TODAY, Monday, March 30th for the Condensed Matter Theory Seminar presented by Jason Alicea, CalTech on at 11:30 am in the Smith Seminar Room (1080 PRB).<o:p></o:p></span></p>
<pre style="mso-margin-top-alt:0in;margin-right:.25in;margin-bottom:0in;margin-left:.5in;margin-bottom:.0001pt"><b><i><span style="font-size:12.0pt;font-family:"Georgia","serif""><o:p> </o:p></span></i></b></pre>
<pre style="margin-right:.25in"><b><i><span style="font-size:12.0pt;font-family:"Georgia","serif"">"A new path towards universal decoherence-free quantum computation"<o:p></o:p></span></i></b></pre>
<pre style="text-align:justify"><b><span style="font-size:12.0pt;font-family:"Georgia","serif""><o:p> </o:p></span></b></pre>
<p class="MsoNormal" style="margin-right:27.0pt;text-align:justify"><b><span style="font-size:12.0pt;font-family:"Georgia","serif"">Abstract:</span></b><span style="font-size:12.0pt;font-family:"Georgia","serif""> The realization of a quantum computer poses
a grand outstanding challenge that promises technological advances in areas ranging from cryptography to quantum simulation and beyond. Typically decoherence--whereby environmental perturbations corrupt quantum information--presents the chief obstacle. Topological
quantum computation, however, cleverly sidesteps decoherence at the hardware level by non-locally manipulating quantum information using emergent particles known as non-Abelian anyons. Considerable progress has recently been made towards stabilizing the simplest
non-Abelian anyons (particles binding Majorana zero-modes) by judiciously combining well-understood materials. This ‘engineering’ approach has inspired a wave of experiments, though such Majorana-based platforms require unprotected gates to run general quantum
computing algorithms, thus entailing significant overhead. A natural question therefore arises: can one combine ordinary ingredients to synthesize a fully fault-tolerant, universal quantum computer? I will answer this question in the affirmative. More precisely,
I will describe how one can combine simple fractional quantum Hall states and conventional superconductors to realize a novel superconducting phase that harbors so-called Fibonacci anyons. These particles constitute the ‘holy grail’ for topological quantum
computing in that they allow for computational universality via a single elementary gate generated by braiding the anyons around each other.<o:p></o:p></span></p>
<pre style="margin-right:.25in;text-align:justify"><span style="font-size:12.0pt;font-family:"Georgia","serif""><o:p> </o:p></span></pre>
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt;font-family:"Georgia","serif"">Thank you,<br>
Trisch<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt;font-family:"Georgia","serif"">2-2778<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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