Past Events

Tracing water and organics in the Solar System using ground-based and space telescopes: how important is the UV?

When
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Abstract: Primitive asteroids (PAs) are the remaining building blocks of our Solar System (SS) study their composition, location and evolution will help us understanding how different materials travel along the Solar System and how they appeared on Earth. They are characterized by dark surfaces (albedo < 10%) dominated by carbon compounds. Their reflectance spectra are similar to those of carbonaceous chondrites (CCs), the most pristine meteorites in our records, that are abundant in hydrated minerals and organics.

Physics Today Webinar: Quantum Materials: From Characterization to Resonator Measurements

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REGISTRATION REQUIRED TO ATTEND. Link to registration can be found here:

https://www.colorado.edu/initiative/cubit/events

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Understanding and addressing materials losses is key to implementing the next generation of quantum technology.  In this webinar, you will learn how studying materials and resonators accelerates qubit development.  

Exploring Quantum Networking Nodes for Neutral Atom Tweezer Arrays

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Abstract: Rydberg atom arrays have emerged as a promising candidate for quantum computation. However, scaling up the platform beyond a few thousand qubits would require a modular approach. An integrated optical cavity could serve as a quantum networking node between distant quantum processors. In this talk, I will show our results towards this integration for two candidate platforms: a nano-photonic crystal cavity (PCC) and a Fabry-Perot Fiber cavity (FPFC).

Mesospheric Response to the 2022 Hunga Tonga – Hunga Ha`apai Volcanic Eruption

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Abstract: On January 15, 2022, the eruption of a submarine volcano in Hunga Tonga – Hunga Ha`apai (HTHH, 20.54°S, 175.38°W) resulted in a volcanic plume that reached a height of 57 km, increasing the total stratospheric water vapor burden by 10% and forming a sulfate aerosol layer. Satellite observations in the summer of 2022 revealed the lowest tropical mesospheric temperatures and highest extratropical mesospheric temperatures observed in the past 20 years.

Computer Science Colloquium-Certified Randomness from Quantum Supremacy

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Abstract: We propose an application for near-term quantum devices:
namely, generating cryptographically certified random bits, to use
(for example) in proof-of-stake cryptocurrencies. Our protocol
repurposes the existing "quantum supremacy" experiments, based on
random circuit sampling, that Google and USTC have successfully
carried out starting in 2019. We show that, whenever the outputs of

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