Influence of the Purcell effect on the purity of bright single photon sources
- Laboratoire de Photonique et de Nanostructures, CNRS, UPR20, Route de Nozay, 91460 Marcoussis (France)
Purcell effect is a powerful tool to efficiently collect single photons emitted by semiconductor quantum dots. However, it is common to observe a degraded single photon purity when a quantum dot is inserted in an optical microcavity. Here, we investigate the role of the cavity coupling on the single photon purity for a quantum dot deterministically coupled to a pillar cavity mode. We show that the degradation of the purity cannot be attributed to cavity feeding effects but is fully explained by recapture processes. A good single photon purity is therefore easily restored using an intra-dot excitation scheme.
- OSTI ID:
- 22122821
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 3 Vol. 103; ISSN APPLAB; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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