Bulletin of the American Physical Society
55th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Monday–Friday, June 3–7, 2024; Fort Worth, Texas
Session S00: Poster Session III (4pm-6pm CDT)
4:00 PM,
Thursday, June 6, 2024
Room: Hall BC
Abstract: S00.00120 : Towards a cryogenic quantum gas microscope for low-temperature Fermi-Hubbard physics
Presenter:
Kaizhao Wang
(University of Colorado, Boulder)
Authors:
Kaizhao Wang
(University of Colorado, Boulder)
Jamie Boyd
(JILA/University of Colorado, Boulder)
Adam M Kaufman
(JILA,CU Boulder)
Nelson Darkwah Oppong
(JILA, University of Colorado at Boulder and NIST)
Cindy A Regal
(University of Colorado, Boulder)
includes the intriguing case of cuprate materials, known for high-temperature superconductivity. However, despite its relative simplicity, exploring the Fermi-Hubbard system with analytical or numerical methods is notoriously difficult. As an alternative,, ultracold atoms trapped in optical lattices have been used as an analog simulator to study the Fermi-Hubbard Hamiltonian, allowing precise tuning of the system parameters and single-site-resolved measurements of charge and spin. Despite tremendous progress, there is still approximately a factor of five discrepancy between the state-of-the-art and the estimated temperature to observe the d-wave superconducting phase as well as potentially other intriguing phases. One key hypothesis of preventing experiments to reach colder systems is the heating due to holes stochastically generated deep in the Fermi sea, among other reasons, background gas collision due to imperfect vacuum could have a major contribution. Here we present the design of a cryogenic quantum gas microscope to reduce the hole generation rate, by cryopumping of the background gas; we further report on other design choices for improved Hubbard model temperatures.
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