soleil

Soutenance de thèse/ Séminaires/ HDR


Habilitation à diriger des recherches

Christophe Sauvan, Institut d’Optique Graduate School

La soutenance d’habilitation à diriger des recherches de Christophe Sauvan ,Jaura lieu le 14 février à 14h00 dans l’auditorium de
l’Institut d’Optique.

Séminaire

Sylvain Schwartz va présenter un séminaire sur les simulations quantiques ( abstract ci dessous) à Telecom ParisTech, ce vendredi 02 février à 16h.

Voici les infos utiles et l’abstract :

When: February 2nd @ 16:00

Where: Telecom ParisTech, 46 rue Barrault, 75013 Paris

Amphithéâtre RUBIS (take the stairs down, just after entering the building at 46 rue Barrault)

Title: A 51-qubit quantum simulator with ultracold atoms

Abstract:

Arrays of interacting ultracold atoms have recently emerged as a versatile tool for the study of quantum many-body dynamics and quantum information. I will first give a tutorial on how to create and manipulate atoms close to the absolute zero with lasers and magnetic fields. I will then describe the experiment that we have built at Harvard in the Lukin group to create reconfigurable one-dimensional defect-free arrays of neutral atoms with Rydberg-Rydberg interactions. Our technique is based on a “bottom-up approach” where 100 tightly focused optical tweezers are generated and controlled by an acousto-optic deflector, and stochastically loaded from an optical molasses with at most one atom per trap [1]. We use site-resolved imaging to probe the atomic distribution without destroying it, and deterministically arrange the atoms into the configuration of interest, hence removing the entropy associated with probabilistic loading [2,3]. By coupling the ground state of the atoms to a Rydberg state, we create strong tunable interactions between them, resulting in a programmable quantum simulator of an Ising-type Hamiltonian. I will describe our recent results with this platform [4], and some very promising directions for the near future.

[1] Schlosser, N., Reymond, G., Protsenko, I. and Grangier, P., Nature 411, 1024 (2001).

[2] Endres, M., Bernien, H., Keesling, A., Levine, H., Anschuetz, E.R., Krajenbrink, A., Senko, C., Vuletić, V., Greiner, M. and Lukin, M.D., Science, aah3752 (2016).

[3] Barredo, D., de Léséleuc, S., Lienhard, V., Lahaye, T. and Browaeys, A., Science 354, 1021 (2016).

[4] Bernien, H., Schwartz, S., Keesling, A., Levine, H., Omran, A., Pichler, H., Choi, S., Zibrov, A. S., Endres, M., Greiner, M., Vuletic, V., and Lukin, M. Nature, 551:579–584 (2017).