AMO seminar: Chi Zhang (Caltech)
Bloomberg 462His work has spanned several areas of AMO physics, including trapped ions, Rydberg atoms, ultracold polyatomic molecules, quantum information, and precision searches for new physics with AMO systems.
His work has spanned several areas of AMO physics, including trapped ions, Rydberg atoms, ultracold polyatomic molecules, quantum information, and precision searches for new physics with AMO systems.
TITLE: Spin: stem-cell for emergence in quantum materials. ABSTRACT: 2025 is the centenary of quantum mechanics making this a good time to reflect on the past as a springboard for the bold research that the 21st century community of physicists can aspire to. One of the unexpected discoveries of Quantum Mechanics is Spin, a concept introduced […]
Title: The Power of Non-invertible Symmetry, Abstract: I will discuss recent advances in a novel class of symmetries in quantum field theories and quantum lattice models, known as non-invertible symmetries. Unlike conventional symmetries governed by Wigner's theorem, these are implemented by conserved operators that have no inverse, challenging and extending the traditional paradigm of symmetry in physics. I […]
Condensed matter and biological physics seminar: Calina Copos (Northeastern University) Host: Brian Camley
Title: Black holes in space and the "lab": from theory to practice Abstract: This talk focuses on recent theoretical developments in black holes and gravity using techniques from quantum field theory. I will begin by demonstrating how perturbative quantum field theory can be employed to compute the gravitational waveforms generated by astrophysical black holes. Next, I will […]
Title: Zooming in on Nature’s secrets with EDMs in molecular ions, Abstract: The Standard Model of particle physics is one of the most successful models of the universe, yet it is known to be incomplete. Substantial efforts on the theoretical front introduce new physics through extensions of the Standard Model. Advances in quantum control of […]
Abstract: I will review the core questions in quantum field theory and gravity for the research in my group. I will also describe recent developments in the study of symmetry of quantum systems and their potential implications for gravity. We are starting a new seminar series with the working title Broad Theory Seminar. Its goal is […]
TITLE: Optics with a Twist for Material Characterization ABSTRACT: Optical wavefront shaping (WFS) involves the ability to manipulate light fields both spatially and temporally. It has largely been enabled by the availability of spatial light modulators (SLM). SLMs are used to create arbitrarily complex light fields and also provide means to manipulate the funda- mental […]
TITLE: The search for a Kitaev spin liquid: predicting experiments and engineering its realization Host: Bob Leheny
von Neumann of (thermal) quantum entropy fame purportedly responded to Shannon asking what his novel classical information content measure should be called: paraphrasing, entropy, nobody understands it anyway. Nowadays thermal entropy, gravitational entropy and information entropy have merged as ideas, and expanded to encompass phase info as well as counting info, into quantum information aka […]
Scanning time-resolved optical studies on Kagome superconductors The kagome lattice provides a fascinating playground to study geometrical frustration, topology and strong correlations. The newly discovered kagome metals AV3Sb5 (A = K, Rb, Cs) exhibit exotic phases including charge density waves (CDWs) and superconductivity. In our study, we perform scanning birefringence and circular dichroism (CD) microscopy on CsV3Sb5. The scanning […]
Title: Universality in a black hole ringing: excitation factors and greybody factors, Abstract: The ringdown gravitational waves emitted by a ringing black hole areimportant for testing strong gravity physics. However, achievingprecise detection requires not only advances in observationaltechniques but also a deeper theoretical understanding of ringdown orquasinormal-mode (QNM) excitation. In this talk, I will explain theuniversality […]