Bonn 2025 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 26: Precision Spectroscopy of Atoms and Ions V (joint session A/Q)
A 26.4: Vortrag
Donnerstag, 13. März 2025, 12:00–12:15, KlHS Mathe
Towards entanglement-enhanced quantum metrology with cold 88Sr atoms — •Sofus Laguna Kristensen1,2, Akhil Kumar1,2, Klavdia Kontou1,2, Ka Hui Goh1,2, Saumya Shah1,2, Trofim Ruzaikin1,2, Immanuel Bloch1,2,3, and Sebastian Blatt1,2,3 — 1Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany — 2Munich Center for Quantum Science and Technology, 80799 Munich, Germany — 3Ludwig-Maximilians-Universität, 80799 Munich, Germany
Optical lattice clocks operating with ultra cold strontium or ytterbium offer unprecedented precision and accuracy in timekeeping. With fractional frequency uncertainties down to the 10−18 level, they enable scientific and technical advances from fundamental physics to global positioning systems. In our group we are developing a next-generation optical atomic clock, where spin squeezing of optically trapped 88Sr atoms will allow us to surpass the standard quantum limit of the atomic interrogation. To improve the short-term stability of the atomic clock, our experiment aims to demonstrate low-latency optical qubit readout made possible by rapid and direct imaging of the ground and metastable clock states.
In this talk I will discuss the progress of the experiment, presenting our latest results of lattice trapping and spectroscopy of the clock transition in 88Sr, and discuss the next steps towards rapid-readout entanglement-enhanced quantum metrology.
Keywords: Optical; Lattice; Clock; Strontium; Imaging