210 citations · 401 across the 10 of their papers we have counts for
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Experimental quantum cryptography with single photons and imperfect devices
Aodhán Corrigan, Koray Kaymazlar, Zhiyao Wang +9
Quantum key distribution (QKD) allows for provably secure key distribution between two trusted parties. Because the security and performance of QKD protocols rely on devices that b…
Single-Photon Advantage in Quantum Cryptography Beyond QKD
Daniel A. Vajner, Koray Kaymazlar, Fenja Drauschke +8
Quantum key distribution (QKD) can be used to establish a secret key between trusted parties. Many practical use-cases in communication networks, however, involve parties who do no…
Robust Single-Photon Generation for Quantum Information Enabled by Stimulated Adiabatic Rapid Passage
Yusuf Karli, René Schwarz, Florian Kappe +11
The generation of single photons using solid-state quantum emitters is pivotal for advancing photonic quantum technologies, particularly in quantum communication. As the field cont…
A Fiber-pigtailed Quantum Dot Device Generating Indistinguishable Photons at GHz Clock-rates
Lucas Rickert, Kinga Żołnacz, Daniel A. Vajner +11
Solid-state quantum light sources based on semiconductor quantum dots (QDs) are increasingly employed in photonic quantum information applications. Especially when moving towards r…
High Purcell-enhancement in quantum-dot hybrid circular Bragg grating cavities for GHz-clockrate generation of indistinguishable photons
Lucas Rickert, Daniel A. Vajner, Martin von Helversen +8
We present Purcell-enhanced () semiconductor InAs quantum dot decay times of ps, enabled by deterministic hybrid circular Bragg gratings (hCBGs). We inve…
Towards Photon-Number-Encoded High-dimensional Entanglement from a Sequentially Excited Quantum Three-Level System
Daniel A. Vajner, Nils D. Kewitz, Martin von Helversen +9
The sequential resonant excitation of a 2-level quantum system results in the emission of a state of light showing time-entanglement encoded in the photon-number-basis - notions th…
On-Demand Generation of Indistinguishable Photons in the Telecom C-Band using Quantum Dot Devices
Daniel A. Vajner, Paweł Holewa, Emilia Zięba-Ostój +10
Semiconductor quantum dots (QDs) enable the generation of single and entangled photons, useful for various applications in photonic quantum technologies. Specifically for quantum c…
Controlling the Photon Number Coherence of Solid-state Quantum Light Sources for Quantum Cryptography
Yusuf Karli, Daniel A. Vajner, Florian Kappe +14
Quantum communication networks rely on quantum cryptographic protocols including quantum key distribution (QKD) using single photons. A critical element regarding the security of Q…
High-throughput quantum photonic devices emitting indistinguishable photons in the telecom C-band
Paweł Holewa, Daniel A. Vajner, Emilia Zięba-Ostój +14
Single indistinguishable photons at telecom C-band wavelengths are essential for quantum networks and the future quantum internet. However, high-throughput technology for single-ph…
Quantum Communication Using Semiconductor Quantum Dots
Daniel A. Vajner, Lucas Rickert, Timm Gao +2
Worldwide enormous efforts are directed towards the development of the so-called quantum internet. Turning this long sought-after dream into reality is a great challenge that will…