Crooks equality Curzon–Ahlborn efficiency History of engineering & technology athermality binomial states cavitation coherence collision model collisional models condensation of fluctuations endoreversible quantum thermodynamics ergotropy fluctuation relation fluctuation relations fluctuation theorems generalised coherent states information thermodynamics large deviations laser cooling magnetic cycle many-body quantum systems nonequilibrium systems phase transitions photon added thermal state photon subtracted thermal state quantum Otto engine quantum correlations quantum heat engines quantum otto cycle quantum thermodynamics