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Phonon-assisted robust and deterministic two-photon biexciton preparation in a quantum dot

Title data

Bounouar, S. ; Müller, M. ; Barth, Andreas M. ; Glässl, Martin ; Axt, Vollrath M. ; Michler, P.:
Phonon-assisted robust and deterministic two-photon biexciton preparation in a quantum dot.
In: Physical Review B. Vol. 91 (2015) Issue 16 . - Art.Nr. 161302(R), 5 S..
ISSN 0163-1829
DOI: https://doi.org/10.1103/PhysRevB.91.161302

Project information

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

We investigate both experimentally and theoretically a simple yet more robust and flexible alternative to Rabi oscillation-type biexciton preparation protocols traditionally used for semiconductor quantum dots. The quantum dot is excited by a strong laser pulse positively detuned from the two-photon resonance yielding an on demand initialization of the biexciton state by making use of the phonon-induced thermalization of the photon dressed states. It is shown that for excitation pulses in the picosecond range, a stable and high occupation of up to CXX=0.95±0.02 is reached. Notably, the generated photons show similar coherence properties as measured in the resonant two-photon scheme. This protocol is a powerful tool for the control of complex solid state systems combining radiative cascades, entanglement, and resonant cavity modes.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: quantum dot; path-integrals; non-linear optics; ultrafast dynamics; pure dephasing; phonons; decoherence; biexcitons; non-Markovian dynamics; memory effects; phonon-induced memory; multi-phonon processes; biexciton preparation; phonon-assisted off-resonant preparation; fast robust on-demand preparation; high fidelity; dressed states; numerically complete real-time path integrals; quantum dissipative dynamics
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III > Chair Theoretical Physics III - Univ.-Prof. Dr. Martin Axt
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 02 Nov 2017 12:40
Last Modified: 02 Nov 2017 12:40
URI: https://eref.uni-bayreuth.de/id/eprint/40280