Frequency metrology in quantum degenerate helium

Frequency metrology in quantum degenerate helium

We have measured the absolute frequency of the 1557-nm doubly forbidden transition between the two metastable states of helium, 2 3S1 (lifetime 8000 s) and 2 1S0 (lifetime 20 ms), with 1 kHz precision. With an Einstein coefficient of 10−7 s−1 this is one of weakest optical transitions ever measured....

Full description

Bibliographic Details
Main Author: Vassen Wim
Format: Article
Language:English
Published: EDP Sciences 2013-08-01
Series:EPJ Web of Conferences
Online Access:http://dx.doi.org/10.1051/epjconf/20135702006

Similar Items

Similar Items