Details

Autor(en) / Beteiligte

• Chiang, Chin‐Cheng
• Bogdanov, Simeon I.
• Makarova, Oksana A.
• Xu, Xiaohui
• Saha, Soham
• Shah, Deesha
• Martin, Zachariah O.
• Wang, Di
• Lagutchev, Alexei S.
• Kildishev, Alexander V.
• Boltasseva, Alexandra
• Shalaev, Vladimir M.

Titel

Chip‐Compatible Quantum Plasmonic Launcher

Ist Teil von

• Advanced optical materials, 2020-10, Vol.8 (20), p.n/a

Ort / Verlag

Weinheim: Wiley Subscription Services, Inc

Erscheinungsjahr

2020

Link zum Volltext

Quelle

Wiley Online Library Journals Frontfile Complete

Beschreibungen/Notizen

• Integrated on‐demand single‐photon sources are critical for the implementation of photonic quantum information processing systems. To enable practical quantum photonic devices, the emission rates of solid‐state quantum emitters need to be substantially enhanced and the emitted signal must be directly coupled to an on‐chip circuitry. The photon emission rate speed‐up is best achieved via coupling to plasmonic antennas, while on‐chip integration can be realized by directly coupling emitters to photonic waveguides. The realization of practical devices requires that both the emission speed‐up and efficient out‐coupling are achieved in a single architecture. Here, a novel architecture is proposed that combines chip compatibility with high radiative emission rates—a quantum plasmonic launcher. The proposed launchers contain single nitrogen‐vacancy (NV) centers in nanodiamonds as quantum emitters that offer record‐high average fluorescence lifetime shortening factors of about 7000 times. Nanodiamonds with single NVs are sandwiched between two silver films that couple more than half of the emission into in‐plane propagating surface plasmon polaritons. This simple, compact, and scalable architecture represents a crucial step toward the practical realization of high‐speed on‐chip quantum networks. A single‐photon source based on a solid‐state quantum emitter in a nanoparticle, encapsulated between two metallic layers, is presented here. The device features single‐photon emission times of a few picoseconds and preferentially emit in‐plane rather than out‐of‐plane photons. This source is promising for integration with low‐loss waveguides and the realization of high‐speed on‐chip quantum networks.