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SM ISO690:2012 CEBAN, Victor, MACOVEI, Mihai. Quantum dynamics of acoustical phonon statistics. In: Fizică şi tehnică: procese, modele, experimente, 2015, nr. 2, pp. 18-22. ISSN 1857-0437. |
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Fizică şi tehnică: procese, modele, experimente | ||||||
Numărul 2 / 2015 / ISSN 1857-0437 | ||||||
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CZU: 621.375.826 | ||||||
Pag. 18-22 | ||||||
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Rezumat | ||||||
We present a model of the quantum control via a laser light of the phonon statistics of an acoustical field and of the population inversion of a qubit. The phonon field is created in an acoustical multilayered nanocavity with a singlemode field being selected and it interacts with the thermal environment as well as with a qubit embedded in the cavity. The considered qubit is made of a quantum dot (QD). The confinement of the acoustical fields' quantum statistics is possible via driving the QD with an intense laser light, which for a proper detuning from the QD's transition frequency
and for a well-chosen intensity may lead to sub-Poissonian distributed steady-state phonon fields. Furthermore, we show that for higher damping rates phonon assisted QD's population inversion occurs under the action of the created phonon fields with quantum statistics. |
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Cuvinte-cheie quantum statistics, cuantum coherence, phonon laser, population inversion, quantum dots, statistică cuantică, coerenţă cuantică, laser fononic, inversie de populaţie, puncte cuantice |
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