[quantum-info] PIQuDos seminar (unusual day!) on Mon May 12: Olivier Landon-Cardinal

[Gus Gutoski]

Reminder: PIQuDos seminar by Olivier Landon-Cardinal today (Monday) at
16:00 in the Time room.  -Gus


On Mon, May 5, 2014 at 2:11 PM, Gus Gutoski
<ggutoski at perimeterinstitute.ca>wrote:

> Please join us on Monday, May 12 at 4pm in the Time room for a quantum
> information seminar by Olivier Landon-Cardinal.  (Note the unusual day!)
>
> Title:  *The quest for self-correcting quantum memory*
> Speaker: *Olivier Landon-Cardinal* (Caltech)
>
> Abstract: A self-correcting quantum memory is a physical system whose
> quantum state can be preserved over a long period of time without the
> need for any external intervention.
>
> The most promising candidates are topological quantum systems which would
> protect information encoded in their degenerate groundspace while
> interacting with a thermal environment. Many models have been suggested but
> several approaches have been shown to fail due to no-go results of
> increasingly general scope. In a nutshell, 2D topological models and many
> 3D topological models have point-like excitations which propagate freely
> and change the groundstate at any non-zero temperature. A recent suggestion
> is to introduce effective long-range interactions between those point-like
> excitations.
>
> In this presentation, I will first explain the desiderata for
> self-correction, review the recent advances and no-go results, and describe
> the current endeavours to define a self-correcting system in 2D and 3D.
> Time permitting, I will briefly present our recent work on the thermal
> instability of models which aim to introduce effective long-range
> interactions between point-like excitations (joint work with Beni Yoshida,
> John Preskill and David Poulin).
>
> Date: Monday, May 12, 2014.
> Time: 16:00
> Location: Time Room (294)
>
> -Gus
>
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