Virtual qubits, virtual temperatures, and the foundations of thermodynamics

The smallest refrigerators can reach maximal efficiency

(2011) Paul Skrzypczyk et al.   Journal of Physics A-Mathematical and Theoretical

Quantum heat engine power can be increased by noise-induced coherence

(2011) M. O. Scully et al.   PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA

Optimal performance of reciprocating demagnetization quantum refrigerators

(2010) Ronnie Kosloff et al.   PHYSICAL REVIEW E

Optimal refrigerator

(2010) Armen E. Allahverdyan et al.   PHYSICAL REVIEW E

How Small Can Thermal Machines Be? The Smallest Possible Refrigerator

(2010) Noah Linden et al.   PHYSICAL REVIEW LETTERS

Quantum optical thermodynamic machines: Lasing as relaxation

(2009) M. Youssef et al.   PHYSICAL REVIEW E

Local effective dynamics of quantum systems: A generalized approach to work and heat

(2008) H. Weimer et al.   EPL