CMT Seminar - Jason Alicea, CalTech - Monday, March 30th, 11:30am, Smith Seminar Room (1080 PRB)

[Longbrake, Patricia]

Please join us for the Condensed Matter Theory Seminar presented by Jason Alicea, CalTech on Monday, March 30th at 11:30 am in the Smith Seminar Room (1080 PRB).



"A new path towards universal decoherence-free quantum computation"


Abstract:  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.


Please contact me if you are interested in meeting with the speaker.

Thank you,
Trisch
2-2778
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