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Abstract |
In this seminar, I will discuss how quantum technologies are now able to unveil and investigate novel
fundamental phenomena by simulating interacting quantum systems. In particular, we will ask : Is it possible
to harness and preserve the quantum coherent properties of many-body systems? This project seems
doomed to fail, as interactions in many-body systems generally lead to ergodicity, namely the inevitable loss
of quantum coherence and memory about initial conditions. Nevertheless, the recent discovery of many-body
localization (MBL) – a generalization of Anderson localization in the presence of interactions – has shown the
possibility to circumvent ergodicity. I will illustrate an experiment in which an array of superconducting qubits
probes the exotic dynamics of interacting and disordered bosons (1). Relying on real-time and interferometric
probes, I will discuss how we could observe and characterize the mechanism of MBL.
(1) https://arxiv.org/abs/1910.06024
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