Abstract: I present our recent work realizing a magneto optical trap (MOT) of the 3 bosonic isotopes of titanium (Ti) atoms for the first time. The properties of Ti are…

The "Discrete Gaussian Chain" is a model which extends the celebrated long-range 1D lsing model with 1/r^\alpha interactions. The latter model is known to have a rather intriguing phase-diagram. Instead of having +/- spins, the discrete Gaussian Chain is a random field with values in the integers Z.

After introducing this model and…

Abstract: Reconfigurable molecular tweezer arrays are a promising platform for quantum science. Recently significant progress has been made in controlling molecules and developing…

We study the interaction between an exciton condensate and nuclei in GaAs/AlGaAs coupled quantum wells using an oscillating (RF) magnetic field. We demonstrate that electron-nuclear spin exchange can polarize the nuclei within the quantum well where the electrons are located over a macroscopic area of ~105 𝜇𝑚2, and at a critical static magnetic…

In 1978, Wilczek and Weinberg theoretically discovered a new boson - the Axion which is the coherent oscillation of the θ field in QCD. Its existence can…

In this talk, I will provide a perspective on thermalization in many-body dynamics where the evolution is governed by unitary circuits through the lens of ‘Krylov complexity’,…

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String theory offers a unique perspective on concrete questions about the nature of quantum gravity. I will review how such questions can be formulated in terms of the string theory S-matrix at high energies. Attempts to sharpen the S-matrix calculations reveal the need to revisit the very formulation of…

Bacteria live complicated lives, in which they must swim through fluids of varying viscosities and interact with surfaces, sediment, and other cells. Accordingly, flagellar systems have evolved adaptive mechanisms to facilitate motility through a wide range of complex environments. At the molecular level, we characterize…

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The detection of Gravitational Waves (GWs) from binary black hole coalescences offers a powerful tool for exploring the strong-field regime of General Relativity (GR). To ensure the reliability of these tests, it is essential to identify and address potential sources of error, particularly those…

Abstract: In an electronic flat band, the kinetic energy of electrons is quenched by a destructive interference of hopping pathways intrinsic to the crystal structure. Such a flat band allows electron-electron…

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Using tools from Boolean function analysis, we address questions regarding quantum advantage, security, and cost:

(Advantage) We establish unconditional quantum advantages over classical…

The XENONnT experiment, located in the Gran Sasso underground laboratory, is primarily dedicated to the direct detection of WIMPs (Weakly Interacting Massive Particles), one of the most promising candidates for dark matter. Exploiting a 5.9 t liquid Xenon time projection chamber (LXe TPC), the experiment achieves unprecedented sensitivity to…

Speaker: Ben Foutty, Stanford University

“Mapping topology and magnetic phase transitions in semiconductor moiré homobilayers”

Abstract

Semiconductor moiré superlattices host a wide array of correlated ground states arising from the interplay of strong electronic interactions and topological bands. In…

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Some of the most fascinating phenomena in nature arise when electrons behave as quantum mechanical waves that interact with one another. But how can we visualize these electronic waves in action? In this talk, I will introduce the Quantum Twisting Microscope (QTM), an innovative scanning probe microscope…

In this talk I will do three things. First, I will outline the conditions under which the interaction rate of inelastic processes with a system consisting of N targets scales as N^2. Second, I will present computations of interaction rates for several weakly interacting particles, including the Cosmic Neutrino Background and QCD axion…

Abstract: Two-dimensional transition metal dichalcogenides (TMDs) have emerged as an exciting platform to stack and twist bilayers to engineer novel strongly correlated states that include continuous Mott transitions, heavy fermi liquids, fractional anomalous Hall states, and (putative) topological superconductivity…