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
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
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
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
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
We perform extended numerical studies to maximize the overall photon coupling efficiency of fiber-coupled quantum dot single-photon sources emitting in the near-infrared and telecom regime. Using the finite element method,… Weiter »Numerical optimization of single-mode fiber-coupled single-photon sources based on semiconductor quantum dots
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
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
Entanglement swapping and heralding are at the heart of many protocols for distributed quantum information. For photons, this typically involves Bell state measurements based on two-photon interference effects. In this… Weiter »Two-Photon Interference of Single Photons from Dissimilar Sources
We demonstrate experimentally the long-standing fundamental theoretical prediction that quantum two-level systems can only be efficiently resonantly excited via multi-photon pulses involving an odd number of photons. This prediction can… Weiter »Three-photon excitation of quantum two-level systems