A Tale of Two Disciplines: Non-Abelian Eigenstate Thermalization Hypothesis
Abstract: Why do chaotic quantum many-body systems thermalize internally? The eigenstate thermalization hypothesis (ETH) explains why if the Hamiltonian lacks degeneracies. If the Hamiltonian conserves one quantity ("charge"), the ETH implies thermalization within an eigenspace of the charge—in a microcanonical subspace. However, quantum systems can have charges that fail to commute with each other and so share no eigenbasis; microcanonical subspaces may not exist. Worse, the Hamiltonian will have degeneracies, so the ETH need not imply thermalization.
Building Quantum Networks from Space
Abstract: The SpooQy-1 project designed, built and operated a source of polarisation entangled photon-pairs onboard a CubeSat for over 600 days. From the lessons learned in the SpooQy-1 mission, the Singapore-based team is working towards performing entanglement distribution from a small satellite to ground receivers. In this talk, I will share observations about the performance of the satellite, the entangled photon source, and the single photon detectors in orbit. These data has been used to validate some very useful models for predicting the effect of radiation on components.
Careers in science communications and journalism
Karmela Padavic-Callaghan is a science writer reporting on physics, materials science and quantum technology for New Scientist. Karmela earned a PhD in theoretical condensed matter physics and atomic, molecular, and optical physics from the University of Illinois Urbana Champaign and her research has been published in peer reviewed journals including Physical Review Letters and New Journal of Physics.
Excursions at the Interface of Topological Phases of Matter and Quantum Error Correction
Dissertation Committee Chair: Professor Maissam Barkeshli
Committee:
Professor Sankar Das Sarma
Professor Jay Deep Sau
Professor Michael Gullans
Professor Mohammad Hafezi