Acceleration-gauge Hamiltonian for a laser-driven particle with a position-dependent mass

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F21%3A00543147" target="_blank" >RIV/61389021:_____/21:00543147 - isvavai.cz</a>
Result on the web
<a href="https://journals.aps.org/pra/abstract/10.1103/PhysRevA.103.053117" target="_blank" >https://journals.aps.org/pra/abstract/10.1103/PhysRevA.103.053117</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevA.103.053117" target="_blank" >10.1103/PhysRevA.103.053117</a>

Result language
angličtina
Original language name
Acceleration-gauge Hamiltonian for a laser-driven particle with a position-dependent mass
Original language description
We address theoretically the problem of laser-induced dynamics of an electron, whose effective mass is position dependent (e.g., due to an effect of a semiconductor nanostructure environment). We derive the associated classical acceleration-gauge Hamiltonian HAG(t) under the most general conditions, even without imposing the dipole approximation. It is shown that HAG(t) possesses an intriguing structure arising due to the spatial dependence of the electronic mass. Subsequently, we restrict ourselves to a weak-field intensity regime, and derive the corresponding quantum mechanical acceleration-gauge Hamiltonian H AG(t) which differs from its classical counterpart by an extra quantum term, QM. Our theoretical findings are illustrated numerically by calculating the probability |T(E)|2 of the resonance transmission of an electron through a model semiconductor nanostructure. It is demonstrated that the quantum mechanical QM term of H AG(t) does often affect crucially the profile of |T(E)|2.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10306 - Optics (including laser optics and quantum optics)

Project
<a href="/en/project/GA20-21179S" target="_blank" >GA20-21179S: Observations of exceptional points in atomic physics using XUV laser pulses</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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