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Two-level parabolic model with phase-jump coupling




TekijätLehto JMS, Suominen KA

KustantajaAMER PHYSICAL SOC

Julkaisuvuosi2016

JournalPhysical Review A

Tietokannassa oleva lehden nimiPHYSICAL REVIEW A

Lehden akronyymiPHYS REV A

Artikkelin numeroARTN 013404

Vuosikerta94

Numero1

Sivujen määrä7

ISSN2469-9926

DOIhttps://doi.org/10.1103/PhysRevA.94.013404


Tiivistelmä
We study the coherent dynamics of a two-level parabolic model and ways to enhance population transfer and even to obtain complete population inversion in such models. Motivated by the complete population inversion effect of zero-area pulses found in [Phys. Rev. A 73, 023416 (2006)], we consider a scheme where a given coupling function is transformed to a zero-area coupling by performing a phase jump in the middle of the evolution. With a phase-jump coupling, complete population inversion can be achieved with relatively small coupling. In the case of Zener tunneling, complete population inversion is obtained for strong-enough coupling regardless of the height of the tunneling barrier. We also derive a universal formula for the effect of the phase jump.



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