Photon Antibunching from Few Quantum Dots in a Cavity

Journal Article · Thu Jun 25 04:00:00 EDT 2015 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.91.061804· OSTI ID:1235284

Gies, Christopher ^[1]; Jahnke, Frank ^[1]; Chow, Weng W. ^[2]

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1. Univ. of Bremen (Germany)
2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Single quantum dots (QDs) are frequently used as single-photon sources, taking advantage of the final exciton decay in a cascade that produces energetically detuned photons. We propose and analyze a new concept of single-photon source, namely, a few-QD microcavity system driven close to, but below the lasing threshold under strong excitation. Surprisingly, even for two or three QDs inside a cavity, antibunching is observed. To quantify the results, we find that a classification of single-photon emission in terms of antibunching in the autocorrelation function g⁽²⁾(0) is insufficient and more details of the photon statistics are required. Our investigations are based on a quantum-optical theory that we solve to obtain the density operator for the quantum-mechanical active medium and radiation field.

• Research Organization: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 1235284
• Report Number(s): SAND2015--5672J; 597035
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 06 Vol. 91; ISSN 1050-2947
• Publisher: American Physical Society (APS)
• Country of Publication: United States
• Language: English

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