1. entanglement and decoherence of a system of rydberg atoms and bose-einstein condensate

Abhijit Pendse

Indian Institute of Science Education and Research, India

13 January 2022 Thu 4 pm

                                      IBS Center for Theoretical Physics of Complex Systems (PCS), Administrative Office (B349), Theory Wing, 3rd floor

                                      Expo-ro 55, Yuseong-gu, Daejeon, South Korea, 34126 Tel: +82-42-878-8633                     

Due to their coherence properties, dilute atomic gas Bose-Einstein Condensates (BECs) present a versatile platform for controlled creation of mesoscopically entangled states with a large number of particles and allow controlled studies of their decoherence. I shall first discuss a proposal for creation of a mesoscopic superposition state of a BEC bright soliton using blockaded Rydberg atoms. Next, with an aim to study the decoherence of a Rydberg atom-BEC environment system, I shall discuss the system of a Rydberg atom immersed in a BEC. We have shown theoretically that for a Rydberg qubit in a Bose condensed environment, experiments can image the system-environment interface that is central for decoherence. High precision absorption images of the condensed environment will be able to capture transient signals that show the real time build up of a mesoscopic entangled state in the environment.