Volume 107, Number 5, September 2014
|Number of page(s)||6|
|Published online||08 September 2014|
Violations of the second law of thermodynamics by a non-completely positive dynamics
1 Dipartimento di Fisica, Università di Trieste - 34151 Trieste, Italy
2 Istituto Nazionale di Fisica Nucleare, Sezione di Trieste - 34151 Trieste, Italy
3 Physics of Information Group, Instituto de Telecomunicações and Instituto Superior Técnico, Universidade de Lisboa - P-1049-001 Lisbon, Portugal
Received: 13 May 2014
Accepted: 19 August 2014
We consider a recently proposed model of driven open quantum micro-circuit (Pellegrini F., Phys. Rev. Lett., 107 (2011) 060401) amenable to experimental investigations. We show that such an open quantum system provides a concrete physical instance where we can prove that modeling its time evolution with a dynamics lacking complete positivity conflicts with the second law of thermodynamics.
PACS: 03.65.Yz – Decoherence; open systems; quantum statistical methods / 42.50.Lc – Quantum fluctuations, quantum noise, and quantum jumps
© EPLA, 2014
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