# Model for optimizing quantum key distribution with continuous-wave pumped entangled-photon sources

@article{Neumann2021ModelFO, title={Model for optimizing quantum key distribution with continuous-wave pumped entangled-photon sources}, author={Sebastian Philipp Neumann and Thomas Scheidl and Mirela Selimovic and Matej Pivoluska and Bo Liu and Martin Bohmann and Rupert Ursin}, journal={Physical Review A}, year={2021} }

Sebastian Philipp Neumann, 2, ∗ Thomas Scheidl, 2 Mirela Selimovic, 2 Matej Pivoluska, 3, 4 Bo Liu, Martin Bohmann, 2 and Rupert Ursin 2, † Institute for Quantum Optics and Quantum Information Vienna, Boltzmanngasse 3, 1090 Vienna Vienna Center for Quantum Science and Technology, Boltzmanngasse 5, 1090 Vienna, Austria Institute of Computer Science, Masaryk University, 602 00 Brno, Czech Republic Institute of Physics, Slovak Academy of Sciences, 845 11 Bratislava, Slovakia College of Advanced…

## 13 Citations

### Experimental Space-Division Multiplexed Polarization-Entanglement Distribution through 12 Paths of a Multicore Fiber

- PhysicsPRX Quantum
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Evelyn A. Ortega, 2, ∗ Krishna Dovzhik, 2 Jorge Fuenzalida, 2, 3 Sören Wengerowsky, 2, 4 Juan Carlos Alvarado-Zacarias, Rodrigo F. Shiozaki, Rodrigo Amezcua-Correa, Martin Bohmann, 2, † and Rupert…

### Distributing Polarization-Entangled Photon Pairs with High Rate Over Long Distances through Standard Telecommunication Fiber

- PhysicsPhysical Review Applied
- 2022

A pair of α -BBO crystals recombine the two signal and two idler paths separately to create an entangled state and a mo-torized HWP and a PBS projects idler photons into di-erent polarizations.

### Experimental entanglement generation for quantum key distribution beyond 1 Gbit/s

- Computer Science, PhysicsQuantum
- 2022

This work presents for the first time a source of polarization-entangled photon pairs at telecommunication wavelengths that covers all these needs of real-world quantum-cryptographic applications, thus enabling unprecedented quantum-secure key rates of more than 1 Gbit/s.

### Continuous entanglement distribution over a transnational 248 km fiber link

- Computer Science, PhysicsNature Communications
- 2022

This work presents a continuously working, trusted-node free international link between Austria and Slovakia, directly distributing polarization-entangled photon pairs via 248 km of deployed telecommunication fiber, paving the way for low-maintenance, ultra-stable quantum communication over long distances, independent of weather conditions and time of day.

### Experimental wavelength-multiplexed entanglement-based quantum cryptography

- PhysicsQuantum Science and Technology
- 2021

In state-of-the-art quantum key distribution systems, the main limiting factor in increasing the key generation rate is the timing resolution in detecting photons. Here, we present and experimentally…

### Ultrabright Polarization-Entangled Photon Pair Source for Frequency-Multiplexed Quantum Communication in Free-Space

- Physics
- 2022

: The distribution of entanglement via satellite links will drastically extend the reach of quantum networks. Highly eﬃcient entangled photon sources are an essential requirement towards overcoming…

### Advances in entanglement-based QKD for space applications

- Physics, Computer Science
- 2022

The most relevant advances in entanglement-based QKD which are implementable over free-space links and thus enable distribution of secure keys from orbit are reviewed.

### BBM92 quantum key distribution over a free space dusty channel of 200 meters

- PhysicsJournal of Optics
- 2022

The current work reports the implementation of BBM92 protocol, an entanglement-based QKD protocol over 200 m distance using indigenous facility developed at Physical Research Laboratory (PRL), Ahmedabad, India, and shows the effect of dust/aerosols on the QBER that puts an upper bound on the secure key rate.

### Satellite-based Quantum Information Networks: Use cases, Architecture, and Roadmap

- Physics
- 2022

The winners will be announced on 9 February 9, 2022 at a ceremony at the Eiffel Tower in Paris.

### The Quantum Internet: A Hardware Review

- PhysicsJournal of the Indian Institute of Science
- 2022

In the century following its discovery, applications for quantum physics are opening a new world of technological possibilities. With the current decade witnessing quantum supremacy, quantum…

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