Highly anisotropic decay rates of single quantum dots in photonic crystal membranes

Wang, Q.; Stobbe, Søren; Thyrrestrup, Henri; Hofmann, Holger F.; Kamp, M.; Schlereth, T. W.; Höfling, Sven; Lodahl, Peter

doi:10.1364/ol.35.002768

Cited by 9 publications

(8 citation statements)

References 15 publications

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“…In contrast, if k ¼ 0 or 90 , each dipole is coupled to one mode and decays independently, similarly to Ref. [20]. An additional coupling mechanism between the bright states is then required to achieve a preferential emission into M k .…”

Section: -2mentioning

confidence: 93%

Linearly Polarized, Single-Mode Spontaneous Emission in a Photonic Nanowire

et al. 2012

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Section: -2mentioning

confidence: 93%

Linearly Polarized, Single-Mode Spontaneous Emission in a Photonic Nanowire

et al. 2012

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“…We note that spin-flip processes coupling bright excitons, i.e. |X b ⇆ |Y b are slow compared to the other decay processes and therefore can be abandoned in the analysis, as theoretically predicted [19,20] and experimentally confirmed from the large anisotropy in the decay rate for X and Y states observed in a PC [21]. Consequently, the five-level scheme can be simplified to the three-level system indicated in Fig.…”

mentioning

confidence: 91%

Mapping the Local Density of Optical States of a Photonic Crystal with Single Quantum Dots

2011

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We use single self-assembled InGaAs quantum dots as internal probes to map the local density of optical states of photonic crystal membranes. The employed technique separates contributions from nonradiative recombination and spin-flip processes by properly accounting for the role of the exciton fine structure. We observe inhibition factors as high as 70 and compare our results to local density of optical states calculations available from the literature, thereby establishing a quantitative understanding of photon emission in photonic crystal membranes.

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“…Two different projections of the LDOS can be recorded by selecting the polarization of the emission, which corresponds to probing the two perpendicularly oriented bright exciton states. A high degree of asymmetry between the radiative decay of the two bright exciton states is generally observed [18], which is a measure of the anisotropic vacuum fluctuations present in photonic crystals [69]. Having determined the radiative rate of single quantum dots in the photonic crystal, Γ rad (r, ω,ê d ), and in a homogenous medium, Γ hom rad (ω), the projected LDOS evaluated at the position of the emitter and at the emission frequency of the emitter can be straightforwardly obtained from…”

Section: Spontaneous Emission Control In Photonic Crystalsmentioning

confidence: 99%

Solid-state quantum optics with quantum dots in photonic nanostructures

Lodahl

Stobbe

2013

Nanophotonics

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Quantum nanophotonics has become a new research frontier where quantum optics is combined with nanophotonics in order to enhance and control the interaction between strongly confined light and quantum emitters. Such progress provides a promising pathway towards quantum-information processing on an all-solid-state platform. Here we review recent progress on experiments with quantum dots in nanophotonic structures with special emphasis on the dynamics of single-photon emission. Embedding the quantum dots in photonic band-gap structures offers a way of controlling spontaneous emission of single photons to a degree that is determined by the local light-matter coupling strength. Introducing defects in photonic crystals implies new functionalities. For instance, efficient and strongly confined cavities can be constructed enabling cavity-quantumelectrodynamics experiments. Furthermore, the speed of light can be tailored in a photonic-crystal waveguide forming the basis for highly efficient single-photon sources where the photons are channeled into the slowly propagating mode of the waveguide. Finally, we will discuss some of the surprises that arise in solid-state implementations of quantum-optics experiments in comparison to their atomic counterparts. In particular, it will be shown that the celebrated point-dipole description of light-matter interaction can break down when quantum dots are coupled to plasmon nanostructures.

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Highly anisotropic decay rates of single quantum dots in photonic crystal membranes

Cited by 9 publications

References 15 publications

Linearly Polarized, Single-Mode Spontaneous Emission in a Photonic Nanowire

Linearly Polarized, Single-Mode Spontaneous Emission in a Photonic Nanowire

Mapping the Local Density of Optical States of a Photonic Crystal with Single Quantum Dots

Solid-state quantum optics with quantum dots in photonic nanostructures

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