Berry Phase Quantum Thermometer
  We show how Berry phase can be used to construct an ultra-high precision quantum thermometer. An important advantage of our scheme is that there is no need for the thermometer to acquire thermal equilibrium with the sample. This reduces measurement times and avoids precision limitations. 
E. Martin-Martinez and A. Dragan and R. B. Mann and I. Fuentes
quant-ph cond-mat.stat-mech