Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Bracht, Thomas K."'
Autor:
Karli, Yusuf, Schwarz, René, Kappe, Florian, Vajner, Daniel A., Krämer, Ria G., Bracht, Thomas K., da Silva, Saimon F. Covre, Richter, Daniel, Nolte, Stefan, Rastelli, Armando, Reiter, Doris E., Weihs, Gregor, Heindel, Tobias, Remesh, Vikas
The generation of single photons using solid-state quantum emitters is pivotal for advancing photonic quantum technologies, particularly in quantum communication. As the field continuously advances towards practical use cases and beyond shielded labo
Externí odkaz:
http://arxiv.org/abs/2409.13981
Autor:
Richter, Quentin W., Kaspari, Jan M., Bracht, Thomas K., Yatsenko, Leonid, Axt, Vollrath Martin, Rauschenbeutel, Arno, Reiter, Doris E.
With the realization of controlled quantum systems, exploring excitations beyond the resonant case opens new possibilities. We investigate an extended Jaynes-Cummings model where two photon modes are coupled off-resonantly to a quantum emitter. This
Externí odkaz:
http://arxiv.org/abs/2405.20095
Autor:
Bracht, Thomas K., Kappe, Florian, Cygorek, Moritz, Seidelmann, Tim, Karli, Yusuf, Remesh, Vikas, Weihs, Gregor, Axt, Vollrath Martin, Reiter, Doris E.
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 potentially offer an improved stability compared to polarization encoded
Externí odkaz:
http://arxiv.org/abs/2404.08348
Autor:
Torun, Cem Güney, Gökçe, Mustafa, Bracht, Thomas K., Monsalve, Mariano Isaza, Benbouabdellah, Sarah, Nacitarhan, Özgün Ozan, Stucki, Marco E., Markham, Matthew L., Pieplow, Gregor, Pregnolato, Tommaso, Munns, Joseph H. D., Reiter, Doris E., Schröder, Tim
The coherent excitation of an optically active spin system is one of the key elements in the engineering of a spin-photon interface. In this work, we use the novel SUPER scheme, employing nonresonant ultrashort optical pulses, to coherently control t
Externí odkaz:
http://arxiv.org/abs/2312.05246
Autor:
Kaspari, Jan M., Bracht, Thomas K., Boos, Katarina, Kim, Sang Kyu, Sbresny, Friedrich, Mueller, Kai, Reiter, Doris E.
Nonlinear optical signals in optically driven quantum systems can reveal coherences and thereby open up the possibility for manipulation of quantum states. While the limiting cases of ultrafast and continuous-wave excitation have been extensively stu
Externí odkaz:
http://arxiv.org/abs/2311.14351
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 the degree of entanglement. While some obstacles like the finite fine
Externí odkaz:
http://arxiv.org/abs/2307.00304
Autor:
Remesh, Vikas, Krämer, Ria G., Schwarz, René, Kappe, Florian, Karli, Yusuf, Siems, Malte Per, Bracht, Thomas K., da Silva, Saimon Filipe Covre, Rastelli, Armando, Reiter, Doris E., Richter, Daniel, Nolte, Stefan, Weihs, Gregor
Publikováno v:
APL Photonics, 2023
A scalable source of single photons is a key constituent of an efficient quantum photonic architecture. To realize this, it is beneficial to have an ensemble of quantum emitters that can be collectively excited with high efficiency. Semiconductor qua
Externí odkaz:
http://arxiv.org/abs/2306.11635
Autor:
Karli, Yusuf, Vajner, Daniel A., Kappe, Florian, Hagen, Paul C. A., Hansen, Lena M., Schwarz, René, Bracht, Thomas K., Schimpf, Christian, da Silva, Saimon F. Covre, Walther, Philip, Rastelli, Armando, Axt, Vollrath Martin, Loredo, Juan C., Remesh, Vikas, Heindel, Tobias, Reiter, Doris E., Weihs, Gregor
Publikováno v:
npj Quantum Inf 10, 17 (2024)
Quantum communication networks rely on quantum cryptographic protocols including quantum key distribution (QKD) using single photons. A critical element regarding the security of QKD protocols is the photon number coherence (PNC), i.e. the phase rela
Externí odkaz:
http://arxiv.org/abs/2305.20017
Autor:
Seidelmann, Tim, Bracht, Thomas K., Lehner, Barbara Ursula, Schimpf, Christian, Cosacchi, Michael, Cygorek, Moritz, Vagov, Alexei, Rastelli, Armando, Reiter, Doris E., Axt, Vollrath Martin
Publikováno v:
Phys. Rev. B 107, 235304 (2023)
Semiconductor quantum dots have emerged as an especially promising platform for the generation of polarization-entangled photon pairs. However, it was demonstrated recently that the two-photon excitation scheme employed in state-of-the-art experiment
Externí odkaz:
http://arxiv.org/abs/2301.10820
Autor:
Bracht, Thomas K., Seidelmann, Tim, Karli, Yusuf, Kappe, Florian, Remesh, Vikas, Weihs, Gregor, Axt, Vollrath Martin, Reiter, Doris E.
Publikováno v:
Phys. Rev. B 107, 035425 (2023)
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 off-resonant pulse does not result in a population inversion. Surprising
Externí odkaz:
http://arxiv.org/abs/2211.08176