293 citations · 963 across the 16 of their papers we have counts for
16 papers · 1 filter
Metropolitan entanglement distribution between an atom and a near-visible photon
Maya Büki, Pooja Malik, Florian Fertig +9
Entanglement distribution is the overarching purpose of quantum networks. While communication over long distances can use deployed fiber infrastructure, it requires photons in the…
Efficient entanglement of three remote single-atom quantum-network nodes
Matthias Seubert, Leonardo Ruscio, Tobias Frank +6
Entanglement distributed over a set of individually addressable qubit nodes is the enabling resource for a plethora of applications ranging from tests of quantum physics to secure…
A source of heralded atom-photon entanglement for quantum networking
Gianvito Chiarella, Tobias Frank, Leart Zuka +2
Communication in quantum networks suffers notoriously from photon loss. Resulting errors can be mitigated with a suitable measurement herald at the receiving node. However, waiting…
Two-cavity-mediated photon-pair emission by one atom
Gianvito Chiarella, Tobias Frank, Pau Farrera +1
Photon-pair sources are widely used in quantum optics and quantum information experiments. Despite their broad deployment, there has not yet been an on-demand implementation with e…
Nondestructive detection of photonic qubits
Dominik Niemietz, Pau Farrera, Stefan Langenfeld +1
One of the biggest challenges in experimental quantum information is to keep the fragile superposition state of a qubit alive. Long lifetimes can be achieved for material qubit car…
Transient dynamics of the quantum light retrieved from Rydberg polaritons
Auxiliadora Padrón-Brito, Roberto Tricarico, Pau Farrera +4
We study the photon statistics of weak coherent pulses propagating through a cold Rydberg atomic ensemble in the regime of Rydberg electromagnetically induced transparency. We show…
Probing the indistinguishability of single photons generated by Rydberg atomic ensembles
Auxiliadora Padrón-Brito, Jan Lowinski, Pau Farrera +2
We investigate the indistinguishability of single photons retrieved from collective Rydberg excitations in cold atomic ensembles. The Rydberg spin waves are created either by off r…
A cold atom temporally multiplexed quantum memory with cavity-enhanced noise suppression
Lukas Heller, Pau Farrera, Georg Heinze +1
Future quantum repeater architectures, capable of efficiently distributing information encoded in quantum states of light over large distances, will benefit from multiplexed photon…
Photonic quantum state transfer between a cold atomic gas and a crystal
Nicolas Maring, Pau Farrera, Kutlu Kutluer +3
Interfacing fundamentally different quantum systems is key to build future hybrid quantum networks. Such heterogeneous networks offer superior capabilities compared to their homoge…
Challenging local realism with human choices
The BIG Bell Test Collaboration, C. Abellán, A. Acín +105
A Bell test is a randomized trial that compares experimental observations against the philosophical worldview of local realism. A Bell test requires spatially distributed entanglem…
Storing single photons emitted by a quantum memory on a highly excited Rydberg state
Emanuele Distante, Pau Farrera, Auxiliadora Padrón-Brito +3
Strong interaction between two single photons is a long standing and important goal in quantum photonics. This would enable a new regime of nonlinear optics and unlock several appl…
Entanglement between a photonic time-bin qubit and a collective atomic spin excitation
Pau Farrera, Georg Heinze, Hugues de Riedmatten
Entanglement between light and matter combines the advantage of long distance transmission of photonic qubits with the storage and processing capabilities of atomic qubits. To dist…
Non-classical correlations between a C-band telecom photon and a stored spin-wave
Pau Farrera, Nicolas Maring, Boris Albrecht +2
Future ground-based quantum information networks will likely use single photons transmitted through optical fibers to entangle individual network nodes. To extend communication dis…
Generation of single photons with highly tunable wave shape from a cold atomic quantum memory
Pau Farrera, Georg Heinze, Boris Albrecht +5
We report on a single photon source with highly tunable photon shape based on a cold ensemble of Rubidium atoms. We follow the DLCZ scheme to implement an emissive quantum memory,…
Controlled rephasing of single collective spin excitations in a cold atomic quantum memory
Boris Albrecht, Pau Farrera, Georg Heinze +2
We demonstrate active control of inhomogeneous dephasing and rephasing for single collective atomic spin excitations (spin-waves) created by spontaneous Raman scattering in a quant…
A Waveguide Frequency Converter Connecting Rubidium Based Quantum Memories to the Telecom C-Band
Boris Albrecht, Pau Farrera, Xavier Fernandez-Gonzalvo +2
The ability to coherently convert the frequency and temporal waveform of single and entangled photons will be crucial to interconnect the various elements of future quantum informa…