Experimental Realization of Highly Efficient Broadband Coupling of Single Quantum Dots to a Photonic Crystal Waveguide

Lund-Hansen, Toke; Stobbe, Søren; Julsgaard, Brian; Thyrrestrup, Henri; Sünner, T.; Kamp, M.; Forchel, A.; Lodahl, Peter

doi:10.1103/physrevlett.101.113903

Cited by 332 publications

(332 citation statements)

References 23 publications

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“…In 2005, ViasnoffSchwoob et al [88] presented evidence for the spontaneous emission enhancement of QD exciton decay coupled to a leaky mode in a planar PC waveguide, using out-of-plane and in-plane light emission measurements. More recent experiments on bound waveguide modes below the light line have been carried out by Lund-Hansen et al [89], who observe enhanced emission in the slow-light regime, and find good agreement with our analytical formulas presented above. Specifically, Lund-Hansen et al performed timeresolved spontaneous emission measurements on single QD positioned within the planar PC waveguide, where the QDs are excited by a pulsed Ti:Sapphire laser.…”

Section: The Infinite-size Pc Waveguide: Open System Cavity-qedsupporting

confidence: 71%

On‐chip single photon sources using planar photonic crystals and single quantum dots

Yao

Rao

Hughes³

2010

Laser & Photonics Reviews

157

184

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We review the basic light-matter interactions and optical properties of chip-based single photon sources, that are enabled by integrating single quantum dots with planar photonic crystals. A theoretical framework is presented that allows one to connect to a wide range of quantum light propagation effects in a physically intuitive and straightforward way. We focus on the important mechanisms of enhanced spontaneous emission, and efficient photon extraction, using all-integrated photonic crystal components including waveguides, cavities, quantum dots and output couplers. The limitations, challenges, and exciting prospects of developing on-chip quantum light sources using integrated photonic crystal structures are discussed.A sequence of optical pulses (top right) interacting with a single quantum dot embedded in a photonic crystal system, resulting in the emission of a train of single photons on-chip.

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Section: The Infinite-size Pc Waveguide: Open System Cavity-qedsupporting

confidence: 71%

On‐chip single photon sources using planar photonic crystals and single quantum dots

Yao

Rao

Hughes³

2010

Laser & Photonics Reviews

157

184

View full text Add to dashboard Cite

show abstract

“…From the first demonstrations of slow-light propagation in ultra-cold atomic gasses 1 , solid-state Ruby 2 and photonic crystal (PhC) structures 3 , focus has shifted to applications, with slow light offering the ability to enhance and control light-matter interactions. The demonstration of tuneable delay lines [4][5][6] , enhanced nonlinearities 7,8 and spontaneous emission 9 , enlarged spectral sensitivity 10 and increased phase shifts illustrate the possibilities enabled by slow-light propagation, with microwave photonics emerging as one of the promising applications 11 .…”

mentioning

confidence: 99%

Slow-light-enhanced gain in active photonic crystal waveguides

Lunnemann

Chen

et al. 2014

Nat Commun

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Passive photonic crystals have been shown to exhibit a multitude of interesting phenomena, including slow-light propagation in line-defect waveguides. It was suggested that by incorporating an active material in the waveguide, slow light could be used to enhance the effective gain of the material, which would have interesting application prospects, for example enabling ultra-compact optical amplifiers for integration in photonic chips. Here we experimentally investigate the gain of a photonic crystal membrane structure with embedded quantum wells. We find that by solely changing the photonic crystal structural parameters, the maximum value of the gain coefficient can be increased compared with a ridge waveguide structure and at the same time the spectral position of the peak gain be controlled. The experimental results are in qualitative agreement with theory and show that gain values similar to those realized in state-of-the-art semiconductor optical amplifiers should be attainable in compact photonic integrated amplifiers.

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“…One can for instance insert the QD in a cavity to increase the local density of electromagnetic modes and accelerate its spontaneous emission into a given optical mode 14,7,8,10 . Another possibility is to use subwavelength waveguides to inhibit the emission in most directions of space 9,15 . State of the art extraction efficiencies around 40% in 0.4 numerical aperture have been reported with both geometries 8,9,10 .…”

mentioning

confidence: 99%

Bright solid-state sources of indistinguishable single photons

et al. 2013

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Bright sources of indistinguishable single photons are strongly needed for the scalability of quantum information processing. Semiconductor quantum dots are promising systems to build such sources. Several works demonstrated emission of indistinguishable photons while others proposed various approaches to efficiently collect them. Here we combine both properties and report on the fabrication of ultrabright sources of indistinguishable single photons, thanks to deterministic positioning of single quantum dots in well-designed pillar cavities. Brightness as high as 0.79±0.08 collected photon per pulse is demonstrated. The indistinguishability of the photons is investigated as a function of the source brightness and the excitation conditions. We show that a two-laser excitation scheme allows reducing the fluctuations of the quantum dot electrostatic environment under high pumping conditions. With this method, we obtain 82 ± 10% indistinguishability for a brightness as large as 0.65 ± 0.06 collected photon per pulse.

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Experimental Realization of Highly Efficient Broadband Coupling of Single Quantum Dots to a Photonic Crystal Waveguide

Cited by 332 publications

References 23 publications

On‐chip single photon sources using planar photonic crystals and single quantum dots

On‐chip single photon sources using planar photonic crystals and single quantum dots

Slow-light-enhanced gain in active photonic crystal waveguides

Bright solid-state sources of indistinguishable single photons

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