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Asynchronous Multi-photon Interference for Quantum Networks
Baghdasar Baghdasaryan, Karen Lozano-Méndez, Markus Leipe +11
Advanced quantum communication protocols require high-visibility quantum interference between photons generated at distant nodes, which places stringent demands on optical synchron…
Entanglement swapping in high dimensions with only linear optics
Baghdasar Baghdasaryan, Kaushik Joarder, Fabian Steinlechner
Entanglement swapping is a fundamental building block for realizing first-generation quantum repeaters, which are essential for building global quantum networks. Current quantum re…
Entanglement-based Quantum Key Distribution in the Daylight and Uplink Satellite Configuration: Proof-of-Principal Demonstration and Feasibility Test
Kaushik Joarder, Jakub Szlachetka, Piotr Kolenderski
Experimental realization of entanglement-based quantum key distribution (QKD) in a daylight uplink (ground-to-satellite) communication channel is highly challenging due to the very…
Ultrabright Sagnac-type source of non-degenerate polarization-entangled photon pairs using only off-the-shelf optical components
Jakub Szlachetka, Kaushik Joarder, Piotr Kolenderski
We develop a Sagnac-type source of ultrabright, non-degenerate, polarization-entangled photon pair that is highly stable and compact simultaneously. We use a long PP…
qkdSim: An experimenter's simulation toolkit for QKD with imperfections, and its performance analysis with a demonstration of the B92 protocol using heralded photon
Rishab Chatterjee, Kaushik Joarder, Sourav Chatterjee +2
Quantum Key Distribution (QKD) is one of the most important aspects of quantum cryptography. Using laws of quantum mechanics as the basis for security, the key distribution process…
Single photon sources: ubiquitous tools in quantum information processing
Urbasi Sinha, Surya Narayan Sahoo, Ashutosh Singh +3
Quantum technologies are the next big revolution in information technologies, computing, communication security, sensing as well as metrology. What do you use to explore all these…