1212.3594 (B. Prasanna Venkatesh et al.)

Bloch Oscillations of Cold Atoms in a Cavity: Effects of Quantum Noise    [PDF]

B. Prasanna Venkatesh, D. H. J. O'Dell

In this communication we extend our theory of Bloch oscillations of cold atoms inside an optical cavity [Venkatesh et al., Phys. Rev. A 80, 063834 (2009)] to include the effects of quantum noise. By solving the coupled dynamics of linearized fluctuations about the atomic and optical meanfields, we are able to include the effects of quantum measurement backaction upon the atoms and ultimately examine how this influences the signal-to-noise ratio of a measurement of external forces using this system. One of the hurdles we overcome along the way is the proper treatment of fluctuations about time-dependent meanfields in the cold atom cavity-QED context.

View original: http://arxiv.org/abs/1212.3594