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Swing-Up of Quantum Emitter Population Using Detuned Pulses

Title data

Bracht, Thomas K. ; Cosacchi, Michael ; Seidelmann, Tim ; Cygorek, Moritz ; Vagov, Alexei ; Axt, Vollrath Martin ; Heindel, Tobias ; Reiter, Doris E.:
Swing-Up of Quantum Emitter Population Using Detuned Pulses.
In: PRX Quantum. Vol. 2 (2021) Issue 4 . - No. 040354.
ISSN 2691-3399
DOI: https://doi.org/10.1103/PRXQuantum.2.040354

Official URL: Volltext

Project information

Project financing: Bundesministerium für Bildung und Forschung
Deutsche Forschungsgemeinschaft
Russian Science Foundation Project No. 18-12-00429

Abstract in another language

The controlled preparation of the excited state in a quantum emitter is a prerequisite for its usage as a single-photon source—a key building block for quantum technologies. In this paper, we propose a coherent excitation scheme using off-resonant pulses. In the usual Rabi scheme, these pulses would not lead to a significant occupation. This is overcome by using a frequency-modulated pulse to swing up the excited-state population. The same effect can be obtained using two pulses with different strong detunings of the same sign. We theoretically analyze the applicability of the scheme to a semiconductor quantum dot. In this case, the excitation is several millielectronvolts below the band gap, i.e., far away from the detection frequency, allowing for easy spectral filtering, and does not rely on any auxiliary particles such as phonons. Our scheme has the potential to lead to the generation of close-to-ideal photons.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: Editor's Suggestion
Keywords: Quantum Optics; nonlinear optics; ultrafast dynamics; two-level dynamics, off-resonant preparation, coherent control
Subject classification: condensed matter physics (theoretical)
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: 20 Dec 2021 12:19
Last Modified: 09 Mar 2022 12:17
URI: https://eref.uni-bayreuth.de/id/eprint/68194