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Single-walled carbon nanotubes (SWCNTs) are promising absorbers and emitters to enable novel photonic and optoelectronic applications but are also known to severely suffer from low optical quantum yields. Here we demonstrate SWCNTs excitons…

Mesoscale and Nanoscale Physics · Physics 2017-12-20 Yue Luo , Ehsaneh D. Ahmadi , Kamran Shayan , Yichen Ma , Kevin S. Mistry , Changjian Zhang , James Hone , Jeffrey L. Blackburn , Stefan Strauf

We discuss the efficiency of single photon sources based on a single quasi-monochromatic emitter (such as a semiconductor quantum dot) inserted in a pillar microcavity. We show that their efficiency, which is in principle excellent thanks…

Quantum Physics · Physics 2007-05-23 Jean-Michel Gerard , Bruno Gayral , Emmanuel Moreau

Tailored photonic cavities allow enhancing light-matter interaction ultimately to create a fully coherent quantum interface. Here, we report on an integrated microdisk cavity containing self-assembled quantum dots to coherently route…

Combining resonant excitation with Purcell-enhanced single quantum dots (QDs) stands out as a prominent strategy for realizing high performance solid-state single photon sources. However, optimizing photon efficiency requires addressing…

Quantum Physics · Physics 2024-03-19 Zhixuan Rao , Jiawei Yang , Changkun Song , Mujie Rao , Ziyang Zheng , Luyu Liu , Xuebin Peng , Ying Yu , Siyuan Yu

We discuss a technique to strongly couple a single target quantum emitter to a cavity mode, which is enabled by virtual excitations of a nearby mesoscopic ensemble of emitters. A collective coupling of the latter to both the cavity and the…

Epitaxial III-V semiconductor quantum dots in nanopthonic structures are promising candidates for implementing on-demand indistinguishable single-photon emission in integrated quantum photonic circuits. Quantum dot proximity to the etched…

The concept of cavity funneling has emerged recently as a promising route towards creating indistinguishable photons from highly dephased emitters. So far, all suggested solutions are solely based on dielectric cavities that require…

Quantum Physics · Physics 2026-04-22 Anastasios Fasoulakis , Ross C. Schofield , Rupert F. Oulton , Alex S. Clark

Single-photon sources with near-unity efficiency and indistinguishability play a major role in the development of quantum technologies. However, on-demand excitation of the emitter imposes substantial limitations to the source performance.…

Quantum Physics · Physics 2023-05-30 Luca Vannucci , Niels Gregersen

Resonant excitation of atoms and ions in macroscopic cavities has lead to exceptional control over quanta of light. Translating these advantages into the solid state with emitters in microcavities promises revolutionary quantum technologies…

We present quantum yield measurements of single layer $\textrm{WSe}_2$ (1L-$\textrm{WSe}_2$) integrated with high-Q ($Q>10^6$) optical microdisk cavities, using an efficient ($\eta>$90%) near-field coupling scheme based on a tapered optical…

We analyze a single photon source consisting of an InAs quantum dot coupled to a directional-emission photonic crystal (PC) cavity implemented in GaAs. On resonance, the dot's lifetime is reduced by more than 10 times, to 45ps. Compared to…

Quantum Physics · Physics 2015-05-13 Mitsuru Toishi , Dirk Englund , Andrei Faraon , Jelena Vuckovic

Annual Review of Astronomy and Astrophysics, Volume 51, page 511e studied for coherently driven single photon sources, such as atoms and quantum dots. Maximal squeezing is realized, if the electronic subsystem of the emitter is in a pure…

Quantum Physics · Physics 2013-08-30 P. Grünwald , W. Vogel

The realization of high-quality special nonclassical states beyond strong single atom-cavity coupling regime is a fundamental element in quantum information science. Here, we study the nonclassical photon emission in a single spin-1 atom…

Quantum Physics · Physics 2023-07-31 Jing Tang , Yuangang Deng

We observe antibunching in the photons emitted from a strongly-coupled single quantum dot and pillar microcavity in resonance. When the quantum dot was spectrally detuned from the cavity mode, the cavity emission remained antibunched, and…

Cavity-embedded quantum emitters show strong modifications of free space radiation properties such as an enhanced decay known as the Purcell effect. The central parameter is the cooperativity $C$, the ratio of the square of the coherent…

Quantum Physics · Physics 2019-05-01 David Plankensteiner , Christian Sommer , Michael Reitz , Helmut Ritsch , Claudiu Genes

We introduce a photonic crystal waveguide-cavity system for controlling single photon cavity-QED processes. Exploiting Bloch mode analysis, and medium-dependent Green function techniques, we demonstrate that the propagation of single…

Optics · Physics 2012-01-13 P. Yao , S. Hughes

Spontaneous two photon emission from a solid-state single quantum emitter is observed. We investigated photoluminescence from the neutral biexciton in a single semiconductor quantum dot coupled with a high Q photonic crystal nanocavity.…

Quantum Physics · Physics 2015-05-28 Y. Ota , S. Iwamoto , N. Kumagai , Y. Arakawa

High quality factor dielectric cavities designed to a nanoscale accuracy are mostly used to increase the spontaneous emission rate of a single emitter. Here we show that the coupling, at room temperature, between thick shell CdSe/CdS…

Mesoscale and Nanoscale Physics · Physics 2015-06-03 D. Canneson , I. Mallek-Zouari , S. Buil , X. Quélin , C. Javaux , B. Mahler , B. Dubertret , J. -P. Hermier

On-chip single-photon sources are key components for integrated photonic quantum technologies. Semiconductor quantum dots can exhibit near-ideal single-photon emission but this can be significantly degraded in on-chip geometries owing to…

High-bit-rate nanocavity-based single photon sources in the 1,550-nm telecom band are challenges facing the development of fibre-based long-haul quantum communication networks. Here we report a very fast single photon source in the 1,550-nm…