activity
20172024
most citedEnhancing quantum cryptography with quantum dot single-photon sources

100 citations · 568 across the 24 of their papers we have counts for

collaborators

24 papers

quant-ph2024★ 5 cited

Theory of time-bin entangled photons from quantum emitters

Thomas K. Bracht, Florian Kappe, Moritz Cygorek +6

Entangled photon pairs form the foundation for many applications in the realm of quantum communication. For fiber-optic transfer of entangled photon pairs, time-bin encoding can po…

quant-ph2023★ 12 cited

Temperature-independent almost perfect photon entanglement from quantum dots via the SUPER scheme

Thomas K. Bracht, Moritz Cygorek, Tim Seidelmann +2

Entangled photon pairs are essential for quantum communication technology. They can be generated on-demand by semiconductor quantum dots, but several mechanisms are known to reduce…

cond-mat.mes-hall2023★ 9 cited

Two-photon excitation with finite pulses unlocks pure dephasing-induced degradation of entangled photons emitted by quantum dots

Tim Seidelmann, Thomas K. Bracht, Barbara Ursula Lehner +7

Semiconductor quantum dots have emerged as an especially promising platform for the generation of polarization-entangled photon pairs. However, it was demonstrated recently that th…

quant-ph2022★ 17 cited

Beyond the four-level model: Dark and hot states in quantum dots degrade photonic entanglement

Barbara Ursula Lehner, Tim Seidelmann, Gabriel Undeutsch +9

Entangled photon pairs are essential for a multitude of photonic quantum applications. To date, the best performing solid-state quantum emitters of entangled photons are semiconduc…

quant-ph2022★ 20 cited

Dressed-state analysis of two-color excitation schemes

Thomas K. Bracht, Tim Seidelmann, Yusuf Karli +5

To coherently control a few-level quantum emitter, typically pulses with an energy resonant to the transition energy are applied making use of the Rabi mechanism, while a single of…

quant-ph2022

Collective Excitation of Spatio-Spectrally Distinct Quantum Dots Enabled by Chirped Pulses

Florian Kappe, Yusuf Karli, Thomas K. Bracht +7

For a scalable photonic device producing entangled photons, it is desirable to have multiple quantum emitters in an ensemble that can be collectively excited, despite their spectra…