TY - JOUR

T1 - Prospect for precision quantum logic spectroscopy of vibrational overtone transitions in molecular oxygen ions

AU - Wolf, Fabian

AU - Heip, Jan C.

AU - Zawierucha, Maximilian J.

AU - Shi, Chunyan

AU - Ospelkaus, Silke

AU - Schmidt, Piet O.

N1 - We thank E Tiemann and M Kajita for valuable discussions. This work has been funded by the Deutsche Forschungsgemeinschaft (German Research Foundation) through CRC 1227 (DQ-mat) - 274200144 , projects A04 and B05 with partial support from Germany's Excellence Strategy—EXC-2123 QuantumFrontiers - 390837967.

PY - 2024/1/16

Y1 - 2024/1/16

N2 - Precision spectroscopy has been the driving force for progress of our physical understanding and still is a promising tool for the investigation of new physics. Molecules offer transitions which allow tests that are not possible in atomic systems. However, usually precision spectroscopy of molecules is challenging due to the lack of cycling transitions for state preparation and state detection. For molecular ions, this obstacle can be overcome by quantum logic spectroscopy, where dissipation for state preparation and detection is provided by a co-trapped atomic ion exploiting the shared eigenstates of motion. Here, we propose a full quantum logic spectroscopy scheme for molecular oxygen ions and theoretically investigate the feasibility of quantum logic-assisted state detection and preparation. Furthermore, we provide coupling rates for a direct single-photon quadrupole excitation of a vibrational overtone transition that can serve as a sensitive reference for tests of a possible variation of the proton-to-electron mass ratio.

AB - Precision spectroscopy has been the driving force for progress of our physical understanding and still is a promising tool for the investigation of new physics. Molecules offer transitions which allow tests that are not possible in atomic systems. However, usually precision spectroscopy of molecules is challenging due to the lack of cycling transitions for state preparation and state detection. For molecular ions, this obstacle can be overcome by quantum logic spectroscopy, where dissipation for state preparation and detection is provided by a co-trapped atomic ion exploiting the shared eigenstates of motion. Here, we propose a full quantum logic spectroscopy scheme for molecular oxygen ions and theoretically investigate the feasibility of quantum logic-assisted state detection and preparation. Furthermore, we provide coupling rates for a direct single-photon quadrupole excitation of a vibrational overtone transition that can serve as a sensitive reference for tests of a possible variation of the proton-to-electron mass ratio.

KW - molecular ions

KW - oxygen

KW - quantum

KW - quantum logic spectroscopy

KW - spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=85182744940&partnerID=8YFLogxK

U2 - 10.1088/1367-2630/ad1ad3

DO - 10.1088/1367-2630/ad1ad3

M3 - Article

VL - 26

JO - New Journal of Physics

JF - New Journal of Physics

SN - 1367-2630

M1 - 013028

ER -