349 citations · 821 across the 7 of their papers we have counts for
7 papers
Composable free-space continuous-variable quantum key distribution using discrete modulation
Kevin Jaksch, Thomas Dirmeier, Yannick Weiser +16
Continuous-variable (CV) quantum key distribution (QKD) allows for quantum secure communication with the benefit of being close to existing classical coherent communication. In rec…
Phase-locking an interferometer with single-photon detections
Bastian Hacker, Kevin Günthner, Conrad Rößler +1
We report on a novel phase-locking technique for fiber-based Mach-Zehnder interferometers based on discrete single-photon detections, and demonstrate this in a setup. Our interfero…
Single-Photon Distillation via a Photonic Parity Measurement Using Cavity QED
Severin Daiss, Stephan Welte, Bastian Hacker +2
Single photons with tailored temporal profiles are a vital resource for future quantum networks. Here we distill them out of custom-shaped laser pulses that reflect from a single a…
Deterministic creation of entangled atom-light Schrödinger-cat states
Bastian Hacker, Stephan Welte, Severin Daiss +4
Quantum physics allows for entanglement between microscopic and macroscopic objects, described by discrete and continuous variables, respectively. As in Schrödinger's famous cat ge…
Photon-Mediated Quantum Gate between Two Trapped Neutral Atoms in an Optical Cavity
Stephan Welte, Bastian Hacker, Severin Daiss +2
Quantum logic gates are fundamental building blocks of quantum computers. Their integration into quantum networks requires strong qubit coupling to network channels, as can be real…
Cavity Carving of Atomic Bell States
Stephan Welte, Bastian Hacker, Severin Daiss +2
We demonstrate entanglement generation of two neutral atoms trapped inside an optical cavity. Entanglement is created from initially separable two-atom states through carving with…
A photon-photon quantum gate based on a single atom in an optical resonator
Bastian Hacker, Stephan Welte, Gerhard Rempe +1
Two photons in free space pass each other undisturbed. This is ideal for the faithful transmission of information, but prohibits an interaction between the photons as required for…