Using Polarons for sub-nK Quantum Nondemolition Thermometry in a Bose-Einstein Condensate
Using Polarons for sub-nK Quantum Nondemolition Thermometry in a Bose-Einstein Condensate
We introduce a novel minimally disturbing method for sub-nK thermometry in a Bose-Einstein condensate (BEC). Our technique is based on the Bose polaron model; namely, an impurity embedded in the BEC acts as the thermometer. We propose to detect temperature fluctuations from measurements of the position and momentum of the …