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Efficient coupling of photons emitted from single light emitters into the single guided mode of an optical fiber is important to realize photonic quantum network devices [1], such as single photon sources [2] and quantum phase gates [3]. For this purpose, we have developed nanofiber Bragg cavities (NFBCs) and observed the enhanced photon emission from the single light emitter [4]. Here, we report...
We introduce nanofiber Bragg cavities fulfilling three important requirements: small mode-volume, wide tuning-range, and efficient fiber-coupling. In a first application, we show enhancement of single quantum emitters such as quantum dots and nitrogen vacancy centers.
For efficient interfacing of quantum emitters nano- and microcavities are important tools. Here, we introduce Bragg cavities fabricated on nanofibers. We show strain-tuning of the cavity resonance and first coupling experiments with quantum emitters.
Highly efficient single-photon collection from solid-state single-photon emitters is an important task in quantum optics. Here, we will introduce two approaches based on three-dimensional laser-written microstructures to enhance collection efficiency as well as directivity.
Direct integration of single photon emitters into easy-to-fabricate functional microstructures is a major step towards a future quantum optical technology. Because of its photostability and versatile spin properties the nitrogen vacancy center (NV center) in diamond is one of the most promising candidates as source of single photons [1]. One of its drawbacks lies in the properties of its host crystal...
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