Polarized alkali-metal vapor with minute-long transverse spin-relaxation time.
Phys Rev Lett
; 105(7): 070801, 2010 Aug 13.
Article
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| MEDLINE
| ID: mdl-20868027
ABSTRACT
We demonstrate lifetimes of Zeeman populations and coherences in excess of 60 sec in alkali-metal vapor cells with inner walls coated with an alkene material. This represents 2 orders of magnitude improvement over the best paraffin coatings. We explore the temperature dependence of cells coated with this material and investigate spin-exchange relaxation-free magnetometry in a room-temperature environment, a regime previously inaccessible with conventional coating materials.