Journal
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
Volume 36, Issue 3, Pages 637-648Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-4075/36/3/320
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We have employed the method of shelving to measure Zeeman resonances of a single trapped Ba+ ion in low magnetic fields, and have observed radio frequency transitions with linewidths of 5 Hz, limited by magnetic-field noise. We have also observed the shift in the Zeeman frequency when the ion is illuminated by off-resonant light. A simultaneous measurement of such light shifts in two atomic states of Ba+ will permit a precise determination of the ratio of transition matrix elements. Furthermore, using this method with an ion in a standing lightwave, a proposed parity nonconservation (PNC) measurement with Ba+ or Ra+ could be realized. In this paper we review methods and the status of these experiments and discuss the remaining challenges of the PNC experiment.
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