Light scattering for thermometry of fermionic atoms in an optical lattice
arXiv:0909.0491 · doi:10.1103/PhysRevLett.103.170404
Abstract
We propose a method for measuring the temperature of fermionic atoms in an optical lattice potential from the intensity of the scattered light in the far-field diffraction pattern. We consider a single-component gas in a tightly-confined two-dimensional lattice, illuminated by far off-resonant light driving a cycling transition. Our calculations show that thermal correlations of the fermionic atoms generate fluctuations in the intensity of the diffraction pattern of light scattered from the atomic lattice array and that this signal can be accurately detected above the shot noise using a lens to collect photons scattered in a forward direction (with the diffraction maxima blocked). The sensitivity of the thermometer is enhanced by an additional harmonic trapping potential.
submitted to PRL in January 2009
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- Coherent light scattering from a two-dimensional Mott insulator
- Fundamental limits in Bayesian thermometry and attainability via adaptive strategies
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- Probing Matter-Field and Atom-Number Correlations in Optical Lattices by Global Nondestructive Addressing
- Uninformed Bayesian Quantum Thermometry
- Homodyne detection of matter-wave fields (shortened)
- Suppression of coherent light scattering in a three-dimensional atomic array