[quantum-info] Joint QI-QF seminar on Wed, Dec 4: Jess Riedel

[Gus Gutoski]

Reminder: joint QI-QF seminar by Jess Riedel tomorrow at 16:00 in the Time
room (room 294).  -Gus


On Thu, Nov 28, 2013 at 2:07 PM, Gus Gutoski <ggutoski at perimeterinstitute.ca
> wrote:

> Please join us on Wednesday, December 4 at 16:00 in the Time room for a
> joint PIQuDos--Quantum Foundations seminar by Jess Riedel.
>
> Title: *Direct Detection of Classically Undetectable Dark Matter through
> Quantum Decoherence*
> Speaker: *Jess Riedel* (IBM)
>
> Abstract:  Although various pieces of indirect evidence about the nature
> of dark matter have been collected, its direct detection has eluded
> experimental searches despite extensive effort. If the mass of dark matter
> is below 1 MeV, it is essentially imperceptible to conventional detection
> methods because negligible energy is transferred to nuclei during
> collisions. Here I propose directly detecting dark matter through the
> quantum decoherence it causes rather than its classical effects such as
> recoil or ionization. I show that quantum spatial superpositions are
> sensitive to low-mass dark matter that is inaccessible to classical
> techniques. This provides new independent motivation for matter
> interferometry with large masses, especially on spaceborne platforms. The
> apparent dark matter wind we experience as the Sun travels through the
> Milky Way ensures interferometers and related devices are directional
> detectors, and so are able to provide unmistakable evidence that
> decoherence has galactic origins.
>
> Date: Wednesday, December 4, 2013.
> Time: 16:00
> Location: Time Room (294)
>
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