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QI: Fachverband Quanteninformation
QI 36: Quantum Metrology (joint session QI/Q)
QI 36.3: Talk
Friday, March 10, 2023, 11:30–11:45, F428
Quantum metrology with ultracold chemical reactions — Seong-Ho Shinn1, Uwe R. Fischer1, and •Daniel Braun2 — 1Seoul National University — 2Eberhard Karls University Tübingen
Classical chemical reactions are routinely used for extremely sensitive detection schemes in chemical, biological, and medical analysis, and have even been employed in the search for dark matter. Now we show that coherent, ultracold chemical reactions harbor great potential for quantum metrology [1]: In an atom-molecule Bose-Einstein condensate (BEC), a weak external perturbation can generate elementary excitations, "reactons", of a reaction field. In an appropriate atom-dominant parameter regime this translates to the coherent creation of molecules which can be selectively detected with modern spectroscopic techniques. This promises to improve the viability of previously proposed BEC-based sensors for gravitational waves and other physical quantities, for which so far no practical read-out scheme could be demonstrated.
[1] Seong-Ho Shinn, Uwe R. Fischer, and Daniel Braun, arXiv:2208.06380