Erlangen 2018 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 20: Quantum Optics III
Q 20.1: Vortrag
Montag, 5. März 2018, 16:15–16:30, K 0.016
Coupling Single Mode Fibers to Single Quantum Emitters with Femtosecond 3D Printing Technology — •Ksenia Weber1, Simon Thiele2, Simon Ristok1, Mario Hentschel1, Alois Herkommer2, and Harald Giessen1 — 14th Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany — 2Institute for Applied Optics and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 9, 70569 Stuttgart, Germany
We propose a method to efficiently couple single photon quantum emitters to single optical mode fibers. Due to the undirected emission of single photon sources, such as quantum dots or defect centers in crystals, coupling into optical fibers which is essential for long range quantum communication is typically associated with high losses. To overcome this limitation, femtosecond two-photon lithography can be used to directly fabricate a combination of a microlens and an optical fiber chuck onto a quantum emitter. A single mode optical fiber is then integrated into the fiber holder. Due to the high precision of the femtosecond 3D printing process, the position of the fiber core can be adjusted with sub-micrometer accuracy to match the focal point of the microlens, as well as matching the high emission NA with the low input NA of the fiber. Light from the emitter which is focused by the microlens can therefore efficiently be coupled into the fiber.