TY - GEN

T1 - Two-loop frequency stabilization using concomitant parameter

AU - Yudin, V. I.

AU - Taichenachev, A. V.

AU - Basalaev, M. Yu

AU - Zanon-Willette, T.

AU - Pollock, J. W.

AU - Shuker, M.

AU - Donley, E. A.

AU - Kitching, J.

N1 - Publisher Copyright: © 2018 IEEE.

PY - 2018/7/9

Y1 - 2018/7/9

N2 - When performing precision measurements, the quantity being measured is often perturbed by the measurement process itself. This includes precision frequency measurements for atomic clock applications carried out with Ramsey spectroscopy. With the aim of eliminating probe-induced perturbations, a method of generalized auto-balanced Ramsey spectroscopy (GABRS) is proposed. Here, the usual local oscillator frequency control loop is supplemented with a second control loop derived from secondary Ramsey sequences interspersed with the primary sequences and with a different Ramsey period. This second loop feeds back to a secondary clock variable and ultimately compensates for the perturbation of the clock frequency caused by the measurements in the first loop. We show that such a two-loop scheme can lead to perfect compensation of measurement-induced light shifts and does not suffer from the effects of relaxation, time-dependent pulse fluctuations and phase-jump modulation errors that are typical of other hyper-Ramsey schemes.

AB - When performing precision measurements, the quantity being measured is often perturbed by the measurement process itself. This includes precision frequency measurements for atomic clock applications carried out with Ramsey spectroscopy. With the aim of eliminating probe-induced perturbations, a method of generalized auto-balanced Ramsey spectroscopy (GABRS) is proposed. Here, the usual local oscillator frequency control loop is supplemented with a second control loop derived from secondary Ramsey sequences interspersed with the primary sequences and with a different Ramsey period. This second loop feeds back to a secondary clock variable and ultimately compensates for the perturbation of the clock frequency caused by the measurements in the first loop. We show that such a two-loop scheme can lead to perfect compensation of measurement-induced light shifts and does not suffer from the effects of relaxation, time-dependent pulse fluctuations and phase-jump modulation errors that are typical of other hyper-Ramsey schemes.

KW - atomic clocks

KW - light shift

KW - Ramsey spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=85050767625&partnerID=8YFLogxK

U2 - 10.1109/EFTF.2018.8409066

DO - 10.1109/EFTF.2018.8409066

M3 - Conference contribution

AN - SCOPUS:85050767625

SP - 348

EP - 351

BT - 2018 European Frequency and Time Forum, EFTF 2018

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 2018 European Frequency and Time Forum, EFTF 2018

Y2 - 10 April 2018 through 12 April 2018

ER -