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Proposed Robust and High-Fidelity Preparation of Excitons and Biexcitons in Semiconductor Quantum Dots Making Active Use of Phonons

Title data

Glässl, Martin ; Barth, Andreas M. ; Axt, Vollrath M.:
Proposed Robust and High-Fidelity Preparation of Excitons and Biexcitons in Semiconductor Quantum Dots Making Active Use of Phonons.
In: Physical Review Letters. Vol. 110 (2013) Issue 14 . - Art.Nr. 147401, 5 S..
ISSN 1079-7114
DOI: https://doi.org/10.1103/PhysRevLett.110.147401

Project information

Project financing: Studienstiftung des deutschen Volkes

Abstract in another language

It is demonstrated how the exciton and the biexciton state of a quantum dot can be prepared with high fidelity on a picosecond time scale by driving the dot with a strong laser pulse that is tuned above the exciton resonance for exciton preparation and in resonance with the exciton transition for biexciton preparation. The proposed protocols make use of the phonon-induced relaxation towards photon dressed states in optically driven quantum dots and combine the simplicity of traditional Rabi oscillation schemes with the robustness of adiabatic rapid passage schemes. Our protocols allow for an on-demand, fast, and almost perfect state preparation even at strong carrier-phonon interaction where other schemes fail. In fact, the performance of the presented protocols is shown to be better the stronger the carrier-phonon interaction is.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: quantum dot; path-integrals; non-linear optics; ultrafast dynamics; pure dephasing; phonons; decoherence; excitons; biexcitons; non-Markovian dynamics; memory effects; phonon-induced memory; multi-phonon processes; exciton preparation; biexciton preparation; phonon-assisted off-resonant preparation; fast robust ondemand 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: 03 Nov 2017 07:31
Last Modified: 03 Nov 2017 07:31
URI: https://eref.uni-bayreuth.de/id/eprint/40258