Title: Overcoming SQL: ultracold atoms as a negative effective mass

Speaker: Dylan Sabulsky (LSSB, Universite Aix Marseille)

Abstract: Is it possible to utilize an ultracold atomic spin system as a negative effective mass to improve frequency metrology as well as the sensitivity of modern GW detectors? Experiment protocols mixing such long lived ensembles with entangled photons allows for the counterbalancing of quantum backaction in an optical cavity, with the possibility of going well past the Standard Quantum Limit (SQL). Here, we briefly cover this new application of quantum technology and discuss possible implications for the next generation of laser interferometers, laboratory frequency metrology, as well as precision fundamental physics measurements. 

Where: Salle Paul Couteau and on zoom