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Work Done on a Coherently Driven Quantum System

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DOI: 10.4236/jqis.2015.53011    2,979 Downloads   3,360 Views  


We calculate the work done by a Landau-Zener-like dynamical field on two- and three-level quantum system by constructing a quantum power operator. We elaborate a general theory applicable to a wide range of closed-quantum system. We consider the dynamics of the system in the time domain ]-tLZ,tLZ[ (where is the LZ transition time in the sudden limit) where the external pulse changes its sign and its action becomes relevant. The statistical work is evaluated in a period [0,T] where T ≤tLZ. Our results are observed to be in good qualitative agreement with known results.

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The authors declare no conflicts of interest.

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Nsangou, I. and Fai, L. (2015) Work Done on a Coherently Driven Quantum System. Journal of Quantum Information Science, 5, 89-102. doi: 10.4236/jqis.2015.53011.


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