Laboratoire de Physique Théorique de la Matière Condensée

Bo Han (Weizmann Institute)

07.03.2024 14:00 - 15:00


Entanglement: Cornerstone of Quantum Phases and Transitions (par zoom)

Entanglement is the unique property that sharply distinguishes quantum from classical physics. Quantum entanglement is the hallmark of quantum phases and transitions without symmetry breaking. Beyond the conceptual level, quantum entanglement is essential in quantum computing devices. By instilling entanglement into unentangled product states, physicists have realized topologically ordered phases with anyons and noisy intermediate-scale quantum (NISQ) devices in experiments. In this talk, I discuss two examples exhibiting an inseparable connection between entanglement and phases of matter. The first is the topologically ordered time crystal phase, which has been realized experimentally on quantum processors; the second is spin ladders with specific discrete symmetries, emulating 2D spinful bosons with long-range entanglement. I conclude with an outlook on how quantum entanglement reshapes science and technology in many-body physics.

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