253 citations · 581 across the 18 of their papers we have counts for
18 papers
A universal loss-limited optimum for fixed multi-pass quantum sensing per absorbed photon
Christoph F. Wildfeuer
Multi-pass schemes send a photon through a sample several times to learn more about it. When the sample rather than the light is scarce, the natural figure of merit is the informat…
Bell violation with path-entangled number states under realistic detection
Christoph F. Wildfeuer
A single photon delocalised over two modes is entangled, and whether that entanglement can violate a Bell inequality has been disputed for three decades. In principle it is settled…
Counterfactual Quantum Sensing: What Interaction-Free Measurement Can and Cannot Buy
Christoph F. Wildfeuer
Interaction-free measurement infers the presence of an absorbing object from a photon that, in the counterfactual sense, never interacted with it, and is widely described as a rout…
Area Efficient Modular Reduction in Hardware for Arbitrary Static Moduli
Robin Müller, Willi Meier, Christoph F. Wildfeuer
Modular reduction is a crucial operation in many post-quantum cryptographic schemes, including the Kyber key exchange method or Dilithium signature scheme. However, it can be compu…
First demonstration of a post-quantum key-exchange with a nanosatellite
Simon M. Burkhardt, Ayesha Reezwana, Tanvirul Islam +3
We demonstrate a post-quantum key-exchange with the nanosatellite SpooQy-1 in low Earth orbit using Kyber-512, a lattice-based key-encapsulation mechanism and a round three finalis…
Entanglement demonstration on board a nano-satellite
Aitor Villar, Alexander Lohrmann, Xueliang Bai +14
Global quantum networks for secure communication can be realised using large fleets of satellites distributing entangled photon-pairs between ground-based nodes. Because the cost o…