Past Events

ColdQuanta Panel Seminar-Navigating the System

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Globally, women earn 81 cents for every dollar that men earn in the workforce. On top of income disparity, some women, often mid-career, feel they have to make a choice between family and career. There are many discussions on “leaning in,” “having it all,” along with debates that some of these frameworks create even more unrealistic expectations for women.

Chemistry in multiple phases and at interfaces in the contemporary and ancient Earth’s atmosphere.

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Abstract: Inspired by atmospheric measurements, which have established that atmospheric chemistry occurs in many phases and at interfaces, my group explored the unique reaction environments presented by planetary atmospheres. In this presentation, the special morphological and chemical properties of organic films on aqueous solutions will be discussed with reference to atmospheric aerosols, sea surface microlayers, cloud and fog droplets.

Speed-ups for Quantum Algorithms with Easier Inputs

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Abstract: The difficulty of solving a problem is often input dependent. For example, if you are searching an unordered list for an item, it is easier to find one if there are multiple copies. Quantum algorithms should also do better on easier inputs, but prior work for an important class of query algorithms only gives an improvement if you know ahead of time that you have an easier input. We designed an algorithm that matches the complexity (up to log factors) of the prior algorithm, but without knowing the difficulty of the input in advance.

Light-matter interaction at ultrashort time scales

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Abstract: Nowadays, the duration of laser pulses can be as short as tens of attoseconds (an attosecond is one quintillionth of a second), In my talk I will discuss some of the basic principles behind the generation and application of attosecond laser pulses and the theoretical challenges to study the interactions of ultrashort laser pulses with matter.

Zoom info will be sent out in the JILA email announcement.

JILA colloquia are available on a YouTube playlist

Representation and Culture as Dimensions of Change in the Physical Sciences: A Work in Progress

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Abstract: In this colloquium, Professor Julie Posselt will share findings from her research about trajectories toward diversity, equity, and inclusion among  organizations in the physical sciences. Drawing from insights first proposed by quantum theorists, she will present organizational equity efforts from the standpoint of complex systems, and offer practical insights for those who working to improve representation and culture.

 

YouTube URL: https://youtu.be/ETItVUgFy78

Relativistic Wind Farm Effect: Possibly Turbulent Flow of a Charged, Massless Relativistic Fluid in Graphene

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Abstract: At low Reynolds numbers, the wind flow in the wake of a single wind turbine is generally not turbulent. However, turbines in wind farms affect each other’s wakes so that a turbulent flow can arise. In the present work, an analogue of this effect for the massless charge carrier flow around obstacles in graphene is outlined.

Electrical probes of non-Abelian spin liquids

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Abstract: Recent thermal-conductivity measurements evidence a magnetic-field-induced non-Abelian spin liquid phase in the Kitaev material α-RuCl3. In this talk, I will explain how we leverage fermion condensation to propose a series of measurements for electrically detecting the hallmark chiral Majorana edge states and bulk anyons in the spin-liquid phase -- despite the fact that α-RuCl3 is a good Mott insulator.

Towards an Exoplanets Demographics Ladder Seminar Abstract:

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The NASA Kepler mission has provided its final planet candidate catalogue, the K2 mission has contributed another four years’ worth of data, and the NASA TESS mission has been churning out new planet discoveries at a rapid pace. The demographics of the exoplanet systems probed by these transiting exoplanet missions are complemented by the demographics probed by other techniques, including radial velocity, microlensing, and direct imaging.