Nanowires offer new opportunities for nanoscale quantum optics; the quantum dot geometry in semiconducting nanowires as well as the material composition and environment can be engineered with unprecedented freedom to improve the light extraction efficiency.
Quantum dots in nanowires are shown to be efficient single photon sources, in addition because of the very small fine structure splitting, we demonstrate the generation of entangled pairs of photons from a nanowire.
Another type of nanowire under study in our group is superconducting nanowires for single photon detection, reaching efficiencies, time resolution and dark counts beyond currently available detectors. We will discuss our first attempts at combining semiconducting nanowire based single photon emitters and superconducting nanowire single photon detectors on a chip to realize integrated quantum circuits.
Valery Zwiller, Klaus D. Jöns, Ali W. Elshaari, M. Versteegh, and Lucas Schweickert, "Quantum optics with nanowires (Conference Presentation)," Proc. SPIE 10358, Quantum Photonic Devices, 1035806 (Presented at SPIE Nanoscience + Engineering: August 06, 2017; Published: 19 September 2017); https://doi.org/10.1117/12.2282276.5581359738001.
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