Low Noise Simultaneous Fluorescence Detection of Two Atomic States (PREPRINT)
Abstract
We have demonstrated a new technique for fluorescence detection of ultracold atoms. Fluorescence from two spatially separated clouds of ultracold atoms illuminated by a mutual probe laser was imaged onto opposite quadrants of a position-sensitive detector. The populations in the two separated atomic clouds were measured by integrating the quadrant detector photocurrents. Simultaneous detection of the populations of the two atomic clouds was used to reduce noise caused by fluctuations in detection laser amplitude and frequency. Using this technique we observed quantum projection noise limited detection signal-to-noise ratios exceeding 2000:1. To demonstrate the application of our highly Sensitive detection we compared two atomic clocks with interrogation times of only 80 ms to obtain a relative frequency stability of 1x 10(exp -13) Tau (exp -1/2) where TAU is the integration time in seconds.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 05, 2006
- Accession Number
- ADA446405
Entities
People
- G. W. Biedermann
- J. B. Fixler
- M. A. Kasevich
- M. T. Cashen
Organizations
- Stanford University