FG 1493/2: Integrated Quantum Optics and Nanophotonics with Defect Centers in Nanodiamonds


The work aims at making a significant step towards elements for optical quantum information processing. Defect centers in nano-crystalline diamond serve as individual quantum systems providing photons and spin degrees of freedom that can be coupled and manipulated on integrated on-chip quantum circuits. We propose to: • push the ultimate purity limit of single-photons from defect centers in diamond nano-crystals and efficiently couple them to integrated on-chip quantum circuits, • perform first on-chip quantum gates employing two-photon quantum interference, •perform quantum control of few-photon light and optical read-out of single defect centers in strongly confined optical fields, • exploit integrated nanophotonics for high-fidelity initialization, manipulation, and single shot read-out of the defect center’s spin degree of freedom. Apart from applications in linear optical quantum computing (LOQC), our results will also pave the way towards integrated experiments with entangled electron spins of NV-centers on a chip. Such experiments require efficient spin control and read-out techniques.


Projektleitung
Benson, Oliver Prof. Dr. rer. nat. (Details) (Experimentelle Physik (Nanooptik))

Laufzeit
Projektstart: 12/2014
Projektende: 11/2017

Zuletzt aktualisiert 2020-21-03 um 23:20