Photonic “hourglass” design for efficient quantum light emission

Andreas Dyhl Østerkryger, Julien Claudon, Jean Michel Gérard, Niels Gregersen

Research output: Contribution to journalJournal articleResearchpeer-review

49 Downloads (Pure)


We propose a novel “hourglass”-shaped design for highly efficient generation and collection of quantum light. The design features a quantum dot in a photonic nanowire sandwiched between tapered Bragg reflectors. For a Purcell factor of 9, the design features a spontaneous emission coupling of 0.993 to the cavity mode enabled by the strong dielectric screening of radiation modes. Thanks to a highly reflecting bottom mirror, we furthermore demonstrate a collection efficiency of 0.95 to a Gaussian profile. Finally, this photonic structure features a broad operation bandwidth, as large as 11 nm.
Original languageEnglish
JournalOptics Letters
Issue number11
Pages (from-to)2617-2620
Publication statusPublished - 2019

Fingerprint Dive into the research topics of 'Photonic “hourglass” design for efficient quantum light emission'. Together they form a unique fingerprint.

Cite this