6 papers
Factorization rule for multitime correlations in non-Markovian open quantum systems
Thomas K. Bracht, Moritz Cygorek
Experiments performed on quantum systems often measure multitime correlation functions. When quantum systems are weakly coupled to their environment, the time evolution of such cor…
Photon Number Coherence of a Quantum Dot-Cavity System Excited Using the SUPER Scheme
Paul C. A. Hagen, Thomas Bracht, Mathieu Bozzio +4
To fulfill the security requirements of quantum cryptography, photon number coherence (PNC) of single photon sources has recently become an important figure of merit. Quantum dots…
SUPER and femtosecond spin-conserving coherent excitation of a tin-vacancy color center in diamond
Cem Güney Torun, Mustafa Gökçe, Thomas K. Bracht +11
The coherent excitation of an optically active spin system is one of the key elements in the engineering of a spin-photon interface. Using the novel SUPER scheme, we coherently con…
Tunable multi-photon correlations from a coherently driven quantum dot
Thomas K. Bracht, Rachel N. Clark, Petros Androvitsaneas +7
Mixing the fields generated by different light sources has emerged as a powerful approach for engineering non-Gaussian quantum states. Understanding and controlling the resulting p…
Dynamically Dressed States of a Quantum Four-Level System
Carolin Calcagno, Friedrich Sbresny, Thomas K. Bracht +8
In this work, we experimentally and theoretically study the dressed-state emission of the biexciton-exciton cascade in a semiconductor quantum dot under pulsed, resonant, two-photo…
Few-Photon SUPER: Quantum emitter inversion via two off-resonant photon modes
Quentin W. Richter, Jan M. Kaspari, Thomas K. Bracht +4
With the realization of controlled quantum systems, exploring excitations beyond the resonant case opens new possibilities. We investigate an extended Jaynes-Cummings model where t…