27
collaborators
2015–2021
years active
Contributions
QIP QCrypt TQC talk poster presenter award · △program ◇steering ○organizing · filled = chair
1 Talk
| Title | Conference | Type | Co-authors |
|---|---|---|---|
| Quantum-limited Measurements of Signals from a Satellite in Geostationary Earth Orbit | QCRYPT 2016 | regular | Dominique Elser, Imran Khan, Birgit Stiller, Ömer Bayraktar, Christian R. Müller, Karen Saucke, Daniel Tröndle, Frank Heine, Stefan Seel, Peter Greulich, Herwig Zech, Björn Gütlich, Ines Richter, Rolf Meyer, Christoph Marquardt, Gerd Leuchs |
5 Posters
| Title | Conference | Co-authors |
|---|---|---|
| Fading channel estimation for free-space continuous-variable secure quantum communication | QCRYPT 2021 | László Ruppert, Christian Peuntinger, Bettina Heim, Vladyslav Usenko, Dominique Elser, Gerd Leuchs, Radim Filip, Christoph Marquardt |
We investigate estimation of fluctuating channels and its effect on security of continuous-variable quantum key distribution. We propose a novel estimation scheme which is based on the clusterization of the estimated transmittance data. We show that uncertainty about whether the transmittance is fixed or not results in a lower key rate. However, if the total number of measurements is large, one can obtain using our method a key rate similar to the non-fluctuating channel even for highly fluctuating channels. We also verify our theoretical assumptions using experimental data from an atmospheric quantum channel. Our method is therefore promising for secure quantum communication over strongly fluctuating turbulent atmospheric channels. |
||
| Fading channel estimation for free-space continuous-variable secure quantum communication | QCRYPT 2020 | László Ruppert, Christian Peuntinger, Bettina Heim, Vladyslav Usenko, Dominique Elser, Gerd Leuchs, Radim Filip, Christoph Marquardt |
We investigate estimation of fluctuating channels and its effect on security of continuous-variable quantum key distribution. We propose a novel estimation scheme which is based on the clusterization of the estimated transmittance data. We show that uncertainty about whether the transmittance is fixed or not results in a lower key rate. However, if the total number of measurements is large, one can obtain using our method a key rate similar to the non-fluctuating channel even for highly fluctuating channels. We also verify our theoretical assumptions using experimental data from an atmospheric quantum channel. Our method is therefore promising for secure quantum communication over strongly fluctuating turbulent atmospheric channels. |
||
| Transmission and distillation of quantum states on a turbulent atmospheric channel | QCRYPT 2017 | Ömer Bayraktar, Andreas Thurn, Christian Peuntinger, Dominique Elser, Christoph Marquardt, Gerd Leuchs |
| Continuous-Variable Quantum Communication at 10 GHz and Compatible with Telecom Networks | QCRYPT 2016 | Imran Khan, Birgit Stiller, Kevin Jaksch, Christian Peuntinger, Jonas Geyer-Ramsteck, Dominique Elser, Christoph Pacher, Christoph Marquardt, Gerd Leuchs |
| Towards continuous-variable quantum key distribution at GHz rates | QCRYPT 2015 | Imran Khan, Birgit Stiller, Kevin Jaksch, Nitin Jain, Christian Peuntinger, Tobias Röthlingshöfer, Dominique Elser, Christoph Marquardt, Gerd Leuchs |
Collaborators
| Co-author | Joint talks |
|---|---|
| Christoph Marquardt | 6 |
| Dominique Elser | 6 |
| Gerd Leuchs | 6 |
| Christian Peuntinger | 5 |
| Birgit Stiller | 3 |
| Imran Khan | 3 |
| Bettina Heim | 2 |
| Kevin Jaksch | 2 |
| László Ruppert | 2 |
| Radim Filip | 2 |
| Vladyslav Usenko | 2 |
| Ömer Bayraktar | 2 |
| Andreas Thurn | 1 |
| Björn Gütlich | 1 |
| Christian R. Müller | 1 |
| Christoph Pacher | 1 |
| Daniel Tröndle | 1 |
| Frank Heine | 1 |
| Herwig Zech | 1 |
| Ines Richter | 1 |