Zobrazeno 1 - 10
of 439
pro vyhledávání: '"Carmele, A."'
Autor:
Hohn, M., Barkemeyer, K., von Helversen, M., Bremer, L., Gschrey, M., Schulze, J. -H., Strittmatter, A., Carmele, A., Rodt, S., Bounouar, S., Reitzenstein, S.
Entanglement is a major resource in advanced quantum technology, where it can enable secure exchange of information over large distances. Energy-time entanglement is particularly attractive for its beneficial robustness in fiber-based quantum communi
Externí odkaz:
http://arxiv.org/abs/2301.05697
Publikováno v:
Phys. Rev. A 106, 023708 (2022)
The dynamics of waveguide-QED systems involving coherent time-delayed feedback give rise to a hierarchy of multi-time correlations within the Heisenberg picture due to the induced non-Markovianity. We propose to perform a projection onto a complete s
Externí odkaz:
http://arxiv.org/abs/2111.02816
Autor:
Kästle, Oliver, Carmele, Alexander
Publikováno v:
Phys. Rev. A 103, 062409 (2021)
We present a bit encoding scheme for a highly efficient and scalable representation of bosonic Fock number states in the restricted Boltzmann machine neural network architecture. In contrast to common density matrix implementations, the complexity of
Externí odkaz:
http://arxiv.org/abs/2103.08285
Publikováno v:
Phys. Rev. A 103, 062423 (2021)
The visibility of the two-photon interference in the Franson interferometer serves as a measure of the energy-time entanglement of the photons. We propose to control the visibility of the interference in the second-order coherence function by impleme
Externí odkaz:
http://arxiv.org/abs/2103.02689
Autor:
Kästle, Oliver, Carmele, Alexander
Publikováno v:
Phys. Rev. B 103, 195420 (2021)
While established neural network approaches based on restricted Boltzmann machine architectures and Metropolis sampling methods are well suited for symmetric open quantum systems, they result in poor scalability and systematic errors for setups witho
Externí odkaz:
http://arxiv.org/abs/2012.10990
Publikováno v:
Phys. Rev. Research 3, 023168 (2021)
Based on tensor network realizations of path integrals reducing exponential memory scaling to polynomial efficiency and a Liouville space implementation of a time-discrete quantum memory, we investigate a quantum system simultaneously exposed to two
Externí odkaz:
http://arxiv.org/abs/2011.05071
Publikováno v:
Phys. Rev. A 103, 033704 (2021)
Within the matrix product state framework, we study the non-Markovian feedback dynamics of a two-level system interacting with the electromagnetic field inside a semi-infinite waveguide where the excitation of an atom-photon bound state is possible.
Externí odkaz:
http://arxiv.org/abs/2011.03769
Publikováno v:
Phys. Rev. B 103, 115418 (2021)
We predict a mechanism for achieving complete population inversion in a continuously driven InAs/GaAs semiconductor quantum dot featuring $V$-type transitions. This highly nonequilibrium steady state is enabled by the interplay between $V$-type inter
Externí odkaz:
http://arxiv.org/abs/2009.12083
Publikováno v:
Phys. Rev. B 102, 245115 (2020)
We investigate the dynamical interplay between topological state of matter and a non-Markovian dissipation, which gives rise to a new and crucial time scale into the system dynamics due to its quantum memory. We specifically study a one-dimensional p
Externí odkaz:
http://arxiv.org/abs/2006.13529
We investigate the coherence and steady-state properties of the Jaynes-Cummings model subjected to time-delayed coherent feedback in the regime of multiple excitations. The introduced feedback qualitatively modifies the dynamical response and steady-
Externí odkaz:
http://arxiv.org/abs/2006.11535