Fermilab colloquium calendar archive 2024

Appropriate for physicists Appropriate for all lab staff and members of the public

Event date	Title	Speakers	Host	Summary	Links
Jan. 10, 2024	Open
Jan. 17, 2024	Open
Jan. 24, 2024	Generation, Detection and Application of Twisted Waves of Light and Neutrons	Charles Clark, Joint Quantum Institute, National Institute of Standards and Technology and University of Maryland	Doğa M. Kürkçüoğlu	Dislocations in wave trains were manifest in the 1830s studies of ocean tides by William Whewell, who discovered “amphidromic points” in the sea, where there is no tidal motion. John Nye and Michael Berry’s 1970s investigations, of fine structure in radio echoes from the bottom of the Antarctic ice sheet, revealed wavefront dislocation as a generic phenomenon. It became a broad field of science in the 1990s, when “orbital angular momentum states” of light were produced, followed by similar realizations in beams of atoms, molecules. x-rays, electrons and neutrons. Robert R. Wilson's “Tractricious” sculpture at Fermilab provides a good framework for visualizing the unity of these phenomena.	Video
Jan. 31, 2024	Open
Feb. 7, 2024	Muon Colliders –The hard part	Robert B Palmer, BNL (Emeritus}	Diktys Stratakis	If you can build a Muon Collider and do physics with it, that is great. But can you? Much of what is needed has been simulated on paper but still requires a lot of engineering and demonstration to know if they are buildable. For a few parts, like the final stages of emittance cooling, we do not even have even a paper solution. I will discuss this and other challenges. What sort of effort is needed?	Video
Feb. 14, 2024	Quantum computing with neutral ytterbium atoms	Jeff Thompson, Princeton University	Chris Stoughton	Neutral atom quantum computing is a rapidly developing field. Exploring new atomic species, such as alkaline earth atoms, provides additional opportunities for cooling and trapping, measurement, qubit manipulation, high-fidelity gates and quantum error correction. In this talk, I will present recent results from our group on implementing high-fidelity gates on nuclear spins encoded in metastable 171Yb atoms, including mid-circuit detection of gate errors that give rise to leakage out of the qubit space, using erasure conversion. I will conclude by discussing ongoing experiments on quantum error correction and reaching very high gate fidelities, and the important role of real-time FPGA control electronics developed by Fermilab in reaching these goals.
Feb. 21, 2024	Open
Feb. 28, 2024	Open
March 6, 2024	Saving the World 101: Teaching After Staying too Long at the Fair.	George Gollin, University of Illinois at Urbana-Champaign	Chris Stoughton	During five decades in HEP, I have seen remarkable discoveries: three generations, Higgs, support for inflationary cosmology…; ideas that were so very, very compelling but were wrong (SU(5) ⟹ proton decay); a necessary evolution in how we work: larger collaborations and devices, longer time scales; growing preferences for the crippling, pyrrhic victories of turf protection... More »	Video
March 13, 2024	Inside Nature	Federico Levi, Nature Magazine	Anna Grassellino	Since its launch in 1869, Nature has seen its mission as two-fold: facilitating the prompt communication of the most important scientific developments to the relevant research communities, while at the same time fostering a greater appreciation of these great works of science amongst the wider public. In this talk, I will endeavour to explain how Nature editors apply these principles in practice, in particular by determining which few of the many excellent research submissions that we receive make it through to publication.	Video
March 20, 2024	Open
March 27, 2024	Open
April 3, 2024	Open
April 10, 2024	Open
April 17, 2024	There and Back again: Low mass physics at the LHC	Cristina Mantilla, Fermilab	Don Lincoln	The Large Hadron Collider has exceeded expectations in many ways, from the machine to the detector performance. Its general purpose experiments, ATLAS and CMS, have produced results that were thought to be unattainable or extremely unlikely to be reached with the current dataset. This is in part due to changes in the trigger strategy and identification techniques of both quarks and leptons in the "low mass" regime. In this talk, I will go through a few of the outcomes of these changes during the last 5 years and show prospects of what we are poised to uncover in the near future.
April 24, 2024	Nature-Inspired Design: the way to a biobased material future	Joanne Rodriguez, Mycocycle, Inc.	Chris Stoughton	With a global rise in population we are faced with the unprecedented need to manufacture more materials for industrial and consumer markets. Within the built environment space specifically, 11% of greenhouse gas emissions come from materials used within the sector. Organizations like the World Economic Forum, Ellen MacArthur Foundation, the DOE National Labs, the U.S. EPA and White House are all looking at how we accelerate and promote the usage of biobased materials and nature-inspired design in an effort to lower greenhouse gases. This presentation will consider principles like biomimicry in design and the influence nature can have to a greener material future.