Zobrazeno 1 - 10
of 77
pro vyhledávání: '"K. Bracht"'
Autor:
Yusuf Karli, Daniel A. Vajner, Florian Kappe, Paul C. A. Hagen, Lena M. Hansen, René Schwarz, Thomas K. Bracht, Christian Schimpf, Saimon F. Covre da Silva, Philip Walther, Armando Rastelli, Vollrath Martin Axt, Juan C. Loredo, Vikas Remesh, Tobias Heindel, Doris E. Reiter, Gregor Weihs
Publikováno v:
npj Quantum Information, Vol 10, Iss 1, Pp 1-9 (2024)
Abstract Quantum communication networks rely on quantum cryptographic protocols including quantum key distribution (QKD) based on single photons. A critical element regarding the security of QKD protocols is the photon number coherence (PNC), i.e., t
Externí odkaz:
https://doaj.org/article/4e9290a12e6a4484a0ee39c2be930cd3
Publikováno v:
Communications Physics, Vol 6, Iss 1, Pp 1-7 (2023)
Abstract Identifying phases and analyzing the stability of dynamic states are ubiquitous and important problems which appear in various physical systems. Nonetheless, drawing a phase diagram in high-dimensional and large parameter spaces has remained
Externí odkaz:
https://doaj.org/article/38f01e69275542d9b120b7691313ae92
Autor:
Vikas Remesh, Ria G. Krämer, René Schwarz, Florian Kappe, Yusuf Karli, Malte Per Siems, Thomas K. Bracht, Saimon Filipe Covre da Silva, Armando Rastelli, Doris E. Reiter, Daniel Richter, Stefan Nolte, Gregor Weihs
Publikováno v:
APL Photonics, Vol 8, Iss 10, Pp 101301-101301-11 (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:
https://doaj.org/article/4a076e2609844b929b3b0f84e8f73d2a
Autor:
Florian Kappe, Yusuf Karli, Thomas K Bracht, Saimon Filipe Covre da Silva, Tim Seidelmann, Vollrath Martin Axt, Armando Rastelli, Gregor Weihs, Doris E Reiter, Vikas Remesh
Publikováno v:
Materials for Quantum Technology, Vol 3, Iss 2, p 025006 (2023)
Nanoscale bright sources that produce high-purity single photons and high-fidelity entangled photon pairs are the building blocks to realize high security quantum communication devices. To achieve high communication rates, it is desirable to have an
Externí odkaz:
https://doaj.org/article/b965fcdf43a14e289f7fdf986039c47e
Autor:
Thomas K. Bracht, Michael Cosacchi, Tim Seidelmann, Moritz Cygorek, Alexei Vagov, V. Martin Axt, Tobias Heindel, Doris E. Reiter
Publikováno v:
PRX Quantum, Vol 2, Iss 4, p 040354 (2021)
The controlled preparation of the excited state in a quantum emitter is a prerequisite for its usage as a single-photon source—a key building block for quantum technologies. In this paper, we propose a coherent excitation scheme using off-resonant
Externí odkaz:
https://doaj.org/article/2bd08c5c0eda47929821d680cd9f38f8
Autor:
Florian Kappe, Yusuf Karli, Thomas K Bracht, Saimon Covre da Silva, Tim Seidelmann, Vollrath Martin Axt, Armando Rastelli, Gregor Weihs, Doris Reiter, VIKAS REMESH
Nanoscale bright sources that produce high-purity single photons and high-fidelity entangled photon pairs are the building blocks to realize high security quantum communication devices. To achieve high communication rates, it is desirable to have an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1a8f021ed6cc9bdb703e7c35afcd2989
http://arxiv.org/abs/2209.08972
http://arxiv.org/abs/2209.08972
Akademický článek
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Autor:
Yusuf Karli, Florian Kappe, Vikas Remesh, Thomas K. Bracht, Julian Münzberg, Saimon Covre da Silva, Tim Seidelmann, Vollrath Martin Axt, Armando Rastelli, Doris E. Reiter, Gregor Weihs
Publikováno v:
Nano letters. 22(16)
The quest for the perfect single-photon source includes finding the optimal protocol for exciting the quantum emitter. Based on a recently proposed, so-called SUPER (swing-up of quantum emitter population) scheme, we demonstrate experimentally that t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::683c5cde36c5a79052f05fae8393460a
https://pubmed.ncbi.nlm.nih.gov/35792372
https://pubmed.ncbi.nlm.nih.gov/35792372
The carrier-phonon interaction in semiconductor quantum dots can greatly affect the optical preparation of the excited state. For resonant excitation used in the Rabi preparation scheme, the polaron is formed accompanied by the emission of a phonon w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d0baef9beb45a057d6e85f275d0ce647
http://arxiv.org/abs/2202.06048
http://arxiv.org/abs/2202.06048
Autor:
Thomas K. Bracht, Tim Seidelmann, Yusuf Karli, Florian Kappe, Vikas Remesh, Gregor Weihs, Vollrath Martin Axt, Doris E. Reiter
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::025b5afb5b8165de818443889b62fbf2