Speaker
Dr
Christoph Affolderbach
(University of Neuchatel)
Description
We study Ramsey-type pulsed interrogation in a micro-fabricated Rb vapor cell for novel miniature atomic clocks called the $\mu $POP clock. Pulsed interrogation reduces light shift effects, allowing for improved long-term stability. The exploitable Ramsey free evolution time and thus the achievable Ramsey signal and clock stability are limited by the $\approx$ 4 – 5 kHz relaxation rates of the Rb atoms in the mm-scale cell. These relaxation rates are measured using a clock-type signal acquisition scheme. Experimental signals and their impact on the $\mu $ clock stability will be discussed. They allow for an experimental clock stability around 1×10^-11 at 1 second and few 10^-12 at one day timescale.
Authors
Mr
Etienne Batori
(University of Neuchatel)
Dr
Christoph Affolderbach
(University of Neuchatel)
Matthieu Pellaton
(University of Neuchatel)
Mr
Florian Gruet
(University of Neuchatel)
Dr
Maddalena Violetti
(Fondazione Toscana Life Sciences)
Dr
Yuanyan Su
(École Polytechnique Fédérale de Lausanne)
Prof.
Anja K. Skrivervik
(École Polytechnique Fédérale de Lausanne)
Prof.
Gaetano Mileti
(University of Neuchatel)
