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NanoElectronique Quantique : Mardi 16 Mars à 14h

Michele Filippone (CEA Grenoble)


Zoom link : https://univ-grenoble-alpes-fr.zoom.us/j/91808901596?pwd=UWZ2cml2N1VBOEZBenk0d3RJek9rdz09
Meeting ID: 918 0890 1596
Passcode: neq2pm!

Title: « Quantum simulation with solid-state quantum technologies : Observing many-body localization in a superconducting qubit array »


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

PROCHAIN SÉMINAIRE : Mardi 23 mars à 14h, Clemens Winkelmann (Institut Néel)