P4 - Quantum Key Hubs

P4 – Quantum Key Hubs

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The security of Quantum Key Distribution (QKD) is based on laws of nature. The overall goal of this project is to develop a photon-based QKD structure in a star like topology and to comprehensively explore its fundamental quantum features. The individual goals are to implement wavelength-division multiplexing in a QKD structure including a field test in a real telecom network, to determine the multipartite statistical correlations of the realized QKD structure, and to investigate the scalability of the QKD structure beyond four parties.

Researchers

Erik Fitzke
Laser und Quantenoptik

Research Interests:

  • Quantum optics
  • Optical Communication
  • Quantum key distribution

Thorsten Haase
Theoretical Quantum Physics

Research Interests:

  • Quantum optics
  • Quantum communication
  • Theory of laser cooling

Oleg Nikiforov
Laser und Quantenoptik

Research Interests:

  • Quantum key distribution experiments
  • Single photon sources
  • Optical communication

Alexander Sauer
Theoretical Quantum Physics

Research Interests:

  • Quantum key distribution protocols
  • Probability polytopes
  • Quantum correlations

Publications

Wegert, Leonard :
Preparations for Assembling Franson Interferometers in a Quantum Key Distributuion Setup.
TU Darmstadt
[Bachelorarbeit] , (2019)

Marakis, Vassilios :
Anwendung der semiklassischen Näherung auf Probleme des Zentralkraftfeldes und der Quantendefekttheorie.
TU Darmstadt
[Masterarbeit] , (2018)

Baack, Leon :
Optimisation of parts of a set-up for quantum key distribution.
TU Darmstadt
[Bachelorarbeit] , (2018)

Gajewski, Marvin :
Asymptotische Eigenschaften offener quantenoptischer Systeme.
TU Darmstadt
[Bachelorarbeit] , (2018)

Wolf, Yannic :
Eine Faserverstärkerstufe für den Quantenhub.
TU Darmstadt
[Bachelorarbeit] , (2018)

Brandy, Malte :
Asymptotische Eigenschaften iterierter Quantenoperationen.
TU Darmstadt
[Masterarbeit] , (2018)

Hofmann, Daniel :
Charakterisierung von verschränkten Photonenpaaren.
TU Darmstadt
[Masterarbeit] , (2018)

Trautmann, Nils ; Hauke, Philipp :
Trapped-ion quantum simulation of excitation transport: Disordered, noisy, and long-range connected quantum networks.
In: PHYSICAL REVIEW A, 97 023606.
[Article] , (2018)

Nikiforov, Oleg ; Sauer, Alexander ; Schickel, Johannes ; Weber, Alexandra ; Alber, Gernot ; Mantel, Heiko ; Walther, Thomas :
Side-Channel Analysis of Privacy Amplification in Postprocessing Software for a Quantum Key Distribution System.

[Report] , (2018)

Deller, Yannick :
Zweidimensionale Surface-Kodes und ihre Anwendungen.
TU Darmstadt
[Bachelorarbeit] , (2017)

Fladung, Lukas :
Semiclassical Laser Cooling of Trapped Ions in a One-Dimensional Standing Wave.
TU Darmstadt
[Bachelorarbeit] , (2017)

Neumann, Klara Maria :
Aufbau von Empfängerstationen für ein System zum Quantenschlüsselaustausch.
TU Darmstadt
[Bachelorarbeit] , (2017)

Schürl, Stefan :
Entwicklung eines FPGA-Systems zur hochauflösenden Zeitmessung.
TU Darmstadt
[Masterarbeit] , (2017)

Geihs, Matthias ; Nikiforov, Oleg ; Demirel, Denise ; Sauer, Alexander ; Butin, Denis ; Günther, Felix ; Alber, Gernot ; Walther, Thomas ; Buchmann, Johannes :
The Status of Quantum-Based Long-Term Secure Communication over the Internet.

[Report] , (2017)

Langfeld, Benedikt :
Vorbereitende Arbeiten zum Feldtest eines Systems zum Quantenschlüsselaustausch.
TU Darmstadt
[Bachelorarbeit] , (2017)

Trautmann, Nils ; Ferenczi, Gergely ; Croke, Sarah ; Barnett, Stephen :
Holographic quantum imaging: reconstructing spatial properties via two-particle interference.
[Online-Edition: http://iopscience.iop.org/article/10.1088/2040-8986/aa67b6]
In: Journal of Optics, 19 (5)
[Article] , (2017)

Trautmann, Nils ; Sonnleitner, Matthias ; Barnett, Stephen :
Will a Decaying Atom Feel a Friction Force?
In: Physical Review Letters
[Article] , (2017)

Trautmann, Nils ; Alber, Gernot ; Leuchs, Gerd :
Efficient single-photon absorption by a trapped moving atom.
In: Physical Review A S. 8.
[Article] , (2016)

Alber, Gernot ; Trautmann, Nils :
Cooperative quantum electrodynamical processes in an ellipsoidal cavity.
In: Journal of Physics: Conference Series
[Article] , (2016)

Trautmann, Nils ; Hauke, Philipp :
Quantum simulation of the dynamical Casimir effect with trapped ions.
In: New Journal of Physics (18) 043029.
[Article] , (2016)

Trautmann, Nils ; Alber, Gernot :
Dissipation-enabled efficient excitation transfer from a single photon to a single quantum emitter.
In: Physical Review A S. 9.
[Article] , (2016)

Frydrych, Holger ; Marthaler, Michael ; Alber, Gernot :
Pulse-controlled quantum gate sequences on a strongly coupled qubit chain.
In: Phys. Rev. A, American Physical Society (92) S. 10.
[Article] , (2015)

Novotny, Jaroslav ; Alber, Gernot ; Jex, Igor :
Universality in random quantum networks.
In: Physical Review A, 92, 062335
[Article] , (2015)

Frydrych, H. ; Hoskovec, A. ; Jex, I. ; Alber, G. :
Selective dynamical decoupling for quantum state transfer.
In: Journal of Physics B: Atomic, Molecular and Optical Physics, IOP Publishing 025501.
[Article] , (2015)

Trautmann, N. ; Alber, G. ; Agarwal, G. S. ; Leuchs, G. :
Time-Reversal-Symmetric Single-Photon Wave Packets for Free-Space Quantum Communication.
In: PHYSICAL REVIEW LETTERS, APS S. 173601.
[Article] , (2015)

Trautmann, N. ; Bernad, J. Z. ; Sondermann, M. ; Alber, G. ; Sanchez-Soto, L. L. ; Leuchs, G. :
Generation of entangled matter qubits in two opposing parabolic mirrors.
In: PHYSICAL REVIEW A 90 063814.
[Article] , (2014)

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