Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Cygorek, Moritz"'
Autor:
Cygorek, Moritz, Gauger, Erik M.
We describe a general-purpose computational toolkit for simulating open quantum systems, which provides numerically exact solutions for composites of zero-dimensional quantum systems that may be strongly coupled to multiple, quite general non-Markovi
Externí odkaz:
http://arxiv.org/abs/2405.19319
The algorithm ``automated compression of environments'' (ACE) [Nat. Phys. 18, 662 (2022)] provides a versatile way of simulating an extremely broad class of open quantum systems. This is achieved by encapsulating the influence of the environment, whi
Externí odkaz:
http://arxiv.org/abs/2405.16548
Autor:
Cygorek, Moritz, Gauger, Erik M.
Process tensor matrix product operators (PT-MPOs) enable numerically exact simulations for an unprecedentedly broad range of open quantum systems. By representing environment influences in MPO form, they can be efficiently compressed using establishe
Externí odkaz:
http://arxiv.org/abs/2404.01287
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:
Boos, Katarina, Kim, Sang Kyu, Bracht, Thomas, Sbresny, Friedrich, Kaspari, Jan, Cygorek, Moritz, Riedl, Hubert, Bopp, Frederik W., Rauhaus, William, Calcagno, Carolin, Finley, Jonathan J., Reiter, Doris E., Mueller, Kai
The interaction of a resonant light field with a quantum two-level system is of key interest both for fundamental quantum optics and quantum technological applications employing resonant excitation. While emission under resonant continuous-wave excit
Externí odkaz:
http://arxiv.org/abs/2305.15827
While several numerical techniques are available for predicting the dynamics of non-Markovian open quantum systems, most struggle with simulations for very long memory and propagation times, e.g., due to superlinear scaling with the number of time st
Externí odkaz:
http://arxiv.org/abs/2304.05291
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:
Cygorek, Moritz, Scerri, Eleanor D., Santana, Ted S., Koong, Zhe X., Gerardot, Brian D., Gauger, Erik M.
Publikováno v:
Phys. Rev. A 107, 023718 (2023)
Indistinguishable quantum emitters confined to length scales smaller than the wavelength of the light become superradiant. Compared to uncorrelated and distinguishable emitters, superradiance results in qualitative modifications of optical signals su
Externí odkaz:
http://arxiv.org/abs/2208.06258
Autor:
Seidelmann, Tim, Cosacchi, Michael, Cygorek, Moritz, Reiter, Doris E., Vagov, Alexei, Axt, Vollrath Martin
Publikováno v:
Phys. Rev. B 107, 075301 (2023)
Entangled photon pairs are essential for many applications in quantum technologies. Recent theoretical studies demonstrated that different types of entangled Bell states can be created in a constantly driven four-level quantum emitter-cavity system.
Externí odkaz:
http://arxiv.org/abs/2205.04389
Autor:
Bracht, Thomas K., Cosacchi, Michael, Seidelmann, Tim, Cygorek, Moritz, Vagov, Alexei, Axt, V. Martin, Heindel, Tobias, Reiter, Doris E.
Publikováno v:
PRX Quantum 2, 040354 (2021)
The controlled preparation of the excited state in a quantum emitter is a prerequisite for its usage as single-photon sources - a key building block for quantum technologies. In this paper we propose a coherent excitation scheme using off-resonant pu
Externí odkaz:
http://arxiv.org/abs/2111.10236