title: Reply to "Comment on 'Similarity between quantum mechanics and thermodynamics: Entropy, temperature, and Carnot cycle' ''.
abstract: In their Comment on the paper [Abe and Okuyama, Phys. Rev. E 83, 021121 (2011)], González-Díaz and Díaz-Solórzano discuss that the initial state of the quantum-mechanical analog of the Carnot cycle should be not in a pure state but in a mixed state due to a projective measurement of the system energy. Here, first the Comment is shown to miss the point. Then, second, multiple projective measurements are discussed as a generalization of the Comment, although they are not relevant to the work commented.
authors.affiliation: Department of Physical Engineering, Mie University, Mie 514-8507, Japanand Institute of Physics, Kazan Federal University, Kazan 420008, Russia.
authors.forename: Sumiyoshi
authors.initials: S
authors.lastname: Abe