Hannover 2016 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 10: Precision Measurements and Metrology III (with Q)

A 10.5: Vortrag

Montag, 29. Februar 2016, 18:00–18:15, a310

Decoherence related limitation of light shift immune Ramsey schemes — •Sergey Kuznetsov^1,2, Nils Huntemann¹, Christian Sanner¹, Burghard Lipphardt¹, Christian Tamm¹, and Ekkehard Peik¹ — ¹Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany — ²Institute of Laser Physics SB RAS, Novosibirsk 630090, Russia

Over the last years generalizations of Ramsey’s method of separated oscillatory fields were proposed that provide immunity to probe-induced frequency shifts [1-3]. They are of particular importance for optical clocks, based on strongly forbidden transitions, where the probe light field induces a significant light shift via non-resonant coupling to higher lying levels. We apply such a technique for our optical clock based on the ²S_1/2 ↔ ²F_7/2 transition of a single ¹⁷¹Yb⁺ ion stored in a radio-frequency Paul trap [4]. Heating of the ion’s motion during the probe period, however, degrades the cancellation of the light shift. We present a theoretical investigation of the effect and compare it with experimental data. We furthermore present a way to compensate for the effect of motional heating.
S.K. acknowledges the DAAD (German Academic Exchange Service) for financial support.
V.I. Yudin, et al., PRA 82, 011804 (2010).
R. Hobson, et al., arXiv:1510.08144.
T. Zanon-Willette, E. de Clercq, E. Arimondo arXiv:1511.04847.
N. Huntemann et al., PRL 109, 213002 (2012).