730 citations · 2.4k across the 38 of their papers we have counts for
28 papers · 1 filter
A digital twin of atomic ensemble quantum memories
Elizabeth Robertson, Benjamin Maaß, Konrad Tschernig +1
Accurate performance estimation of experimentally demonstrated quantum memories is key to understand the nuances in their deployment in photonic quantum networks. While several sof…
Quantum walk on a square lattice with identical particles
Gonzalo Camacho, Jasmin Meinecke, Janik Wolters
We investigate quantum superposition effects in two-dimensional quantum walks of identical particles with different statistics under particle exchange, starting from various differ…
On-demand storage and retrieval of single photons from a semiconductor quantum dot in a room-temperature atomic vapor memory
Benjamin Maaß, Avijit Barua, Norman Vincenz Ewald +7
Interfacing light from solid-state single-photon sources with scalable and robust room-temperature quantum memories has been a long-standing challenge in photonic quantum informati…
Standalone mobile quantum memory system
Martin Jutisz, Alexander Erl, Janik Wolters +2
We present the implementation and performance analysis of a portable, rack-mounted standalone warm vapor quantum memory system, that also includes the laser package, control electr…
Room-temperature ladder-type optical memory compatible with single photons from InGaAs quantum dots
Benjamin Maaß, Norman Vincenz Ewald, Avijit Barua +2
On-demand storage and retrieval of quantum information in coherent light-matter interfaces is a key requirement for future quantum networking and quantum communication applications…
Machine learning optimal control pulses in an optical quantum memory experiment
Elizabeth Robertson, Luisa Esguerra, Leon Messner +2
Efficient optical quantum memories are a milestone required for several quantum technologies including repeater-based quantum key distribution and on-demand multi-photon generation…
Quantum memories for fundamental science in space
Jan-Michael Mol, Luisa Esguerra, Matthias Meister +4
Investigating and verifying the connections between the foundations of quantum mechanics and general relativity will require extremely sensitive quantum experiments. To provide ult…
Multiplexed random-access optical memory in warm cesium vapor
Leon Meßner, Elizabeth Robertson, Luisa Esguerra +2
The ability to store large amounts of photonic quantum states is regarded as substantial for future optical quantum computation and communication technologies. However, research fo…
Single-Photon Storage in a Ground-State Vapor Cell Quantum Memory
Gianni Buser, Roberto Mottola, Björn Cotting +2
Interfaced single-photon sources and quantum memories for photons together form a foundational component of quantum technology. Achieving compatibility between heterogeneous, state…
Optimization and readout-noise analysis of a warm vapor EIT memory on the Cs D1 line
Luisa Esguerra, Leon Meßner, Elizabeth Robertson +3
Quantum memories promise to enable global quantum repeater networks. For field applications, alkali metal vapors constitute an exceptional storage platform, as neither cryogenics,…
Topical White Paper: A Case for Quantum Memories in Space
Mustafa Gündoğan, Thomas Jennewein, Faezeh Kimiaee Asadi +20
It has recently been theoretically shown that Quantum Memories (QM) could enable truly global quantum networking when deployed in space thereby surpassing the limited range of land…
Simulating quantum repeater strategies for multiple satellites
Julius Wallnöfer, Frederik Hahn, Mustafa Gündoğan +5
A global quantum repeater network involving satellite-based links is likely to have advantages over fiber-based networks in terms of long-distance communication, since the photon l…
Direct observation of the particle exchange phase of photons
Konrad Tschernig, Chris Müller, Malte Smoor +5
Quantum theory stipulates that if two particles are identical in all physical aspects, the allowed states of the system are either symmetric or antisymmetric with respect to permut…
Space-borne quantum memories for global quantum communication
Mustafa Gündoğan, Jasminder S. Sidhu, Victoria Henderson +4
Global scale quantum communication links will form the backbone of the quantum internet. However, exponential loss in optical fibres precludes any realistic application beyond few…
An efficient, tunable, and robust source of narrow-band photon pairs at the Rb D1 line
Roberto Mottola, Gianni Buser, Chris Müller +6
We present an efficient and robust source of photons at the Rb D1-line (795 nm) with a narrow bandwidth of MHz. The source is based on non-degenerate, cavity-enha…
Slow and fast light behavior of single photons from a quantum dot interacting with the excited state hyperfine structure of the Cesium D1-line
Tim Kroh, Janik Wolters, Andreas Ahlrichs +9
Hybrid interfaces between distinct quantum systems play a major role in the implementation of quantum networks. Quantum states have to be stored in memories to synchronize the phot…
Microwave device characterisation using a widefield diamond microscope
Andrew Horsley, Patrick Appel, Janik Wolters +4
Devices relying on microwave circuitry form a cornerstone of many classical and emerging quantum technologies. A capability to provide in-situ, noninvasive and direct imaging of th…
On-demand semiconductor source of 780 nm single photons with controlled temporal wave packets
Lucas Béguin, Jan-Philipp Jahn, Janik Wolters +8
We report on a fast, bandwidth-tunable single-photon source based on an epitaxial GaAs quantum dot. Exploiting spontaneous spin-flip Raman transitions, single photons at nm…
Mixed basis quantum key distribution with linear optics
Mladen Pavicic, Oliver Benson, Andreas W. Schell +1
Two-qubit quantum codes have been suggested to obtain better efficiency and higher loss tolerance in quantum key distribution. Here, we propose a two-qubit quantum key distribution…
Simple atomic quantum memory suitable for semiconductor quantum dot single photons
Janik Wolters, Gianni Buser, Andrew Horsley +5
Quantum memories matched to single photon sources will form an important cornerstone of future quantum network technology. We demonstrate such a memory in warm Rb vapor with on-dem…
Photon-Statistics Excitation Spectroscopy of a Single Two Level System
M. Strauß, M. Placke, S. Kreinberg +5
We investigate the influence of the photon statistics on the excitation dynamics of a single two level system. A single semiconductor quantum dot represents the two level system an…
Exploring Dephasing of a Solid-State Quantum Emitter via Time- and Temperature- Dependent Hong-Ou-Mandel Experiments
A. Thoma, P. Schnauber, M. Gschrey +9
We probe the indistinguishability of photons emitted by a semiconductor quantum dot (QD) via time- and temperature- dependent two-photon interference (TPI) experiments. An increase…
Deterministic and Robust Entanglement of Nitrogen Vacancy Centers using Low-Q Photonic Crystal Cavities
Janik Wolters, Julia Kabuss, Andreas Knorr +1
We propose an experiment to generate deterministic entanglement between separate nitrogen vacancy (NV) centers mediated by the mode of a photonic crystal cavity. Using numerical si…
Observation of the Quantum Zeno Effect on a Single Solid State Spin
Janik Wolters, Max Strauß, Rolf Simon Schoenfeld +1
The quantum Zeno effect, i.e. the inhibition of coherent quantum dynamics by projective measurements is one of the most intriguing predictions of quantum mechanics. Here we experim…