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Laser cooled trapped ions offer unprecedented control over both internal and external degrees of freedom at the single-particle level. They are considered among the foremost candidates for realizing quantum simulation and computation platforms that can outperform classical computers in specific tasks.
Abstract: In-vivo imaging through multimode fibers has been recently accomplished. Multimode fibers are attractive for endoscopic applications due to their thin cross-section, a large number of degrees of freedom, and flexibility. However modal dispersion and intermodal coupling preclude direct image transmission. The development of fast spatial phase control enables focus scanning and structured illumination for different novel imaging modalities. We discuss the implications of these techniques for ultrathin optical endoscopy.
Abstract: Heavy-ion collision experiments have provided overwhelming evidence that quarks and gluons, the elementary particles within protons and neutrons, can flow as a nearly frictionless, strongly interacting relativistic liquid over distance scales not much larger than the size of a proton. On the other hand, with the dawn of the multi-messenger astronomy era marked by the detection of a binary neutron star merger, it became imperative to understand how extremely dense fluids behave under very strong gravitational fields.
Abstract: For the past decade we have begun to explore the origin of planetary compositions which are set in the natal protoplanetary disk.
Abstract: Imagine a world where communication doesn't depend on words, but on flashes of light, scents, and movement. In the extraordinary world of insects, this is a daily reality. This talk will take you on a journey into the secret lives of fireflies and bees, exploring how they convey information through visual and chemical signals. Drawing on concepts from physics, mathematics, and computer science, we will uncover the universal rules that insects obey to make their communication efficient and effective.
Coffee, tea and cookies will be available in G1B31 (across from G1B20) from 3:30–3:50 p.m.
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Abstract: Abstract: Simple measures of the productivity and prominence vary enormously across both individual scientists and across institutions. But, how much do these sometimes enormous inequalities represent genuine meritocratic differences, and how much are they biased by non-meritocratic factors that may limit scientific progress?
I’ll discuss two experimental results that utilize the collective emission of strontium atoms within a cavity, aimed at advancing atomic clock technology. In our first investigation, we employ superradiant pulses from the cavity mode as a fast and directed atomic population readout, mapping out a unique Ramsey spectroscopic lineshape and demonstrating the potential for multiple readouts within a single experimental cycle. In our second investigation, we extend these pulses using an incoherent repumping scheme, achieving steady-state lasing for over a millisecond on the kHz tr
Abstract: Planetary atmospheres are not static in time, and the many changes they experience can contribute to making the planet’s surface a more (or less) hospitable place. Interactions between the planet and its host star are especially important, and not only control the temperature of an atmosphere but can drive atmospheric escape and atmospheric chemistry.
Abstract: It is likely both intuitive and familiar that, as you walk further from a campfire, you feel less of its heat. And yet the same is not true for the great fireball in the sky: our sun. In fact, the Sun’s corona is millions of kelvin hotter than its photosphere, despite being much further away from the center of the star. From 2020 through 2021 a team of over a thousand undergraduate students at CU Boulder painstakingly analyzed the X-ray emissions of hundreds of individual solar flares in search of evidence to help resolve this mystery.
Join CU Wizards for November's show "There's Something in the Air!" a program that's all about the Earth's atmosphere.
Professor Brown travels the world to study the amazingly thin, invisible, ethereal stuff that blankets our amazing planet and makes life on Earth possible. Have you wondered...Why is the Sky Blue!? Why are sunrises orange? What is air made of exactly? Did you know the Earth wears sunglasses!? And what's the story about the greenhouse gases that are slowly but steadily warming the Earth?
Abstrace: Back in 1973, Sidney Coleman and Nobel Prize winner David Gross proved that only non-abelian gauge theories can have asymptotic freedom.