Long-Lived Coherence on a μ Hz Scale Optical Magnetic Quadrupole Transition
Year: 2024
Type: article
Abstract: We report on the coherent excitation of the ultranarrow ^{1}S_{0}-^{3}P_{2} magnetic quadrupole transition in ^{88}Sr. By confining atoms in a state insensitive optical lattice, we achieve excitation fractions of 97(1)% and observe linewidths as narrow as 58(1) Hz. With Ramsey spectroscopy, we find coherence times of 14(1) ms, which can be extended to 266(36) ms using a spin-echo sequence. We determine the lifetime of the ^{3}P_{2} level for spontaneous emission of magnetic quadrupole radiation to be 110(31) min, confirming long-standing theoretical predictions. These results establish an additional clock transition in strontium and pave the way for applications of the metastable ^{3}P_{2} state in quantum computing and quantum simulations.
Source: Physical Review Letters
Language: Latvian
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,750
Awards: G1543358806, Programmable Atomic Large-scale Quantum Simulation 2 - SGA1, G2908576657, G3022749744, G3514304032, G3976037732, G434337789, G4856404060, G4856418649, G5257272672, G526456201, G5473681008, QLCI-CI: NSF Quantum Leap Challenge Institute for Enhanced Sensing and Distribution Using Correlated Quantum States, G5987792135, G8876996369, G8959349008
OpenAlex ID: W4399856443