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Experiment

Statistical limits for quantum networks with semiconductor entangled photon sources

  • Jingzhong Yang, Michael Zopf, Pengji Li, Nand Lal Sharma, Weijie Nie, Frederik Benthin, Tom Fandrich, Eddy Patrick Rugeramigabo, Caspar Hopfmann, Robert Keil, Oliver G. Schmidt, Fei Ding

Semiconductor quantum dots are promising building blocks for quantum communication applications. Although deterministic, efficient, and coherent emission of entangled photons has been realized, implementing a practical quantum repeater remains outstanding.… Weiter »Statistical limits for quantum networks with semiconductor entangled photon sources

Entangling a Hole Spin with a Time-Bin Photon: A Waveguide Approach for Quantum Dot Sources of Multi-Photon Entanglement

  • Martin Hayhurst Appel, Alexey Tiranov, Simon Pabst, Ming Lai Chan, Christian Starup, Ying Wang, Leonardo Midolo, Konstantin Tiurev, Sven Scholz, Andreas D. Wieck, Arne Ludwig, Anders Søndberg Sørensen, Peter Lodahl

Deterministic sources of multi-photon entanglement are highly attractive for quantum information processing but are challenging to realize experimentally. In this paper, we demonstrate a route towards a scaleable source of… Weiter »Entangling a Hole Spin with a Time-Bin Photon: A Waveguide Approach for Quantum Dot Sources of Multi-Photon Entanglement

On-chip spin-photon entanglement based on single-photon scattering

  • Ming Lai Chan, Alexey Tiranov, Martin Hayhurst Appel, Ying Wang, Leonardo Midolo, Sven Scholz, Andreas D. Wieck, Arne Ludwig, Anders Søndberg Sørensen, Peter Lodahl

The realization of on-chip quantum gates between photons and solid-state spins is a key building block for quantum-information processors, enabling, e.g., distributed quantum computing, where remote quantum registers are interconnected… Weiter »On-chip spin-photon entanglement based on single-photon scattering

Quantum Interference of Identical Photons from Remote Quantum Dots

  • Liang Zhai, Giang N. Nguyen, Clemens Spinnler, Julian Ritzmann, Matthias C.Löbl, Andreas D. Wieck, Arne Ludwig, Alisa Javadi, Richard J. Warburton

Photonic quantum technology provides a viable route to quantum communication, quantum simulation, and quantum information processing. Recent progress has seen the realisation of boson sampling using 20 single-photons and quantum… Weiter »Quantum Interference of Identical Photons from Remote Quantum Dots

All-optical Tuning of Indistinguishable Single-Photons Generated in Three-level Quantum Systems

  • Łukasz Dusanowski, Chris Gustin, Stephen Hughes, Christian Schneider, and Sven Höfling

Resonance fluorescence of two-level quantum systems has emerged as a powerful tool in quantum information processing. Extension of this approach to higher-level systems provides new opportunities for quantum optics applications.… Weiter »All-optical Tuning of Indistinguishable Single-Photons Generated in Three-level Quantum Systems

Coherence of a charge stabilised tin-vacancy spin in diamond

  • Johannes Görlitz, Dennis Herrmann, Philipp Fuchs, Takayuki Iwasaki, Takashi Taniguchi, Detlef Rogalla, David Hardeman, Pierre-Olivier Colard, Matthew Markham, Mutsuko Hatano, Christoph Becher

Quantum information processing (QIP) with solid state spin qubits strongly depends on the efficient Quantum information processing (QIP) with solid state spin qubits strongly depends on the efficient initialisation of… Weiter »Coherence of a charge stabilised tin-vacancy spin in diamond

Spin-optical dynamics and quantum efficiency of single V1 center in silicon carbide

  • Naoya Morioka, Di Liu, Öney O. Soykal, Izel Gediz, Charles Babin, Rainer Stöhr, Takeshi Ohshima, Nguyen Tien Son, Jawad Ul-Hassan, Florian Kaiser, Jörg Wrachtrup

Color centers in silicon carbide are emerging candidates for distributed spin-based quantum applications due to the scalability of host materials and the demonstration of integration into nanophotonic resonators. Recently, silicon… Weiter »Spin-optical dynamics and quantum efficiency of single V1 center in silicon carbide

Optically coherent nitrogen-vacancy defect centers in diamond nanostructures

  • Laura Orphal-Kobin, Kilian Unterguggenberger, Tommaso Pregnolato, Natalia Kemf, Matthias Matalla, Ralph-Stephan Unger, Ina Ostermay, Gregor Pieplow, Tim Schröder

Optically active solid-state spin defects have the potential to become a versatile resource for quantum information processing applications. Nitrogen-vacancy defect centers (NV) in diamond act as quantum memories and can… Weiter »Optically coherent nitrogen-vacancy defect centers in diamond nanostructures

Photoneutralization of charges in GaAs quantum dot based entangled photon emitters

  • Jingzhong Yang, Tom Fandrich, Frederik Benthin, Robert Keil, Nand Lal Sharma, Weijie Nie, Caspar Hopfmann, Oliver G. Schmidt, Michael Zopf, Fei Ding

Semiconductor-based emitters of pairwise photonic entanglement are a promising constituent of photonic quantum technologies. They are known for the ability to generate discrete photonic states on-demand with low multiphoton emission,… Weiter »Photoneutralization of charges in GaAs quantum dot based entangled photon emitters