17-22 July 2022
Royal Conservatory of Music, Toronto
America/Toronto timezone

Rydberg atoms in Bose-Einstein condensed environments: cold bubble chambers and mesoscopic entanglement

20 Jul 2022, 17:00
1h 30m
Hart House (Hart House)

Hart House

Hart House

7 Hart House Cir, Toronto, ON M5S 3H3
Poster presentation Degenerate gases, many-body physics, and quantum simulation Poster session

Speaker

Dr Sebastian Wuster (Indian Institute of Science Education and Research Bhopal)

Description

Rydberg Atoms in highly excited electronic states with n=30-200 can be excited within Bose-Einstein condensates (BECs), and while lifetimes are shorter than in vacuum [1,2], these atoms live long enough to cause a response of the BEC mean field [3]. During this, thousands of ground-state atoms are present within the Rydberg orbit, allowing the study of atoms moving within atoms [4].
We present beyond-mean field models of the joint Rydberg-BEC dynamics, showing how either can be used to probe the other.

For multiple Rydberg atoms in a single electronic state, we show that the phase coherence of the condensate allows the tracking of mobile Rydberg impurities akin to the function of bubble-chambers in particle physics [5]. For a single Rydberg atom with multiple electronic states, we provide spectral densities of the BEC as a decohering environment [6], and show that the BEC can image a signature of the entangling evolution that causes Rydberg q-bit decoherence [7] or serve as non-Markovian environment for quantum simulations.

[1] Schlagmüller et al. PRX 6 (2016) 031020.
[2] Kanungo et al. PRA 102 (2020) 063317.
[3] Balewski et al. Nature 502 (2013) 664.
[4] Tiwari et al. arXiv:2111.05031 (2021).
[5] Tiwari et al. PRA 99 (2019) 043616.
[6] Rammohan et al. PRA 103 (2021) 063307.
[7] Rammohan et al. PRA(Letters) 104 (2021) L060202.

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Presenter name Sebastian Wuster

Primary authors

Dr Sebastian Wuster (Indian Institute of Science Education and Research Bhopal) Mr Sidharth Rammohan (Indian Institute of Science Education and Research, Bhopal India ) Mr Shivakant Tiwari (Indian Institute of Science Education and Research, Bhopal India ) Mr Aritra Mishra (Indian Institute of Science Education and Research, Bhopal India ) Dr Abhijit Pendse (Indian Institute of Science Education and Research, Bhopal India ) Dr Anil K Chauhan (Indian Institute of Science Education and Research, Bhopal India ) Dr Rejish Nath (Indian Institute of Science Education and Research, Pune, India) Dr Felix Engel (Universität Stuttgart, Germany ) Mr Marcel Wagner (Max-Planck-Institute of Quantum Optics and MCQST, Garching, Germany ) Dr Richard Schmidt (Max-Planck-Institute of Quantum Optics and MCQST, Garching, Germany ) Dr Florian Meinert (Universität Stuttgart, Germany) Dr Alexander Eisfeld (Max Planck Institute for the Physics of Complex Systems, Dresden, Germany )

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