Efficient coupling of single photons to ridge-waveguide photonic integrated circuits

Poor, Sartoon Fattah; Hoang, Thang B.; Midolo, Leonardo; Dietrich, Christof P.; Li, L. H.; Linfield, E. H.; Xia, Tian; Pagliano, Francesco; Otten, F. W. M. van; Fiore, Andrea

doi:10.1063/1.4799669

Cited by 29 publications

(20 citation statements)

References 30 publications

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“…This requires the efficient coupling of single photons from PhC waveguides to low‐loss, supported ridge waveguides. Coupling from the PhC waveguide into the RWG using a simple, single‐step lithographic process was recently demonstrated showing coupling efficiencies of up to 70% . It is based on tapering the mode in both the lateral and the vertical direction by gradually changing the width of the waveguide (see Figure ).…”

Section: Photon Routing and Manipulationmentioning

confidence: 99%

GaAs integrated quantum photonics: Towards compact and multi‐functional quantum photonic integrated circuits

Dietrich

Fiore

Thompson

et al. 2016

Laser & Photonics Reviews

222

214

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The recent progress in integrated quantum optics has set the stage for the development of an integrated platform for quantum information processing with photons, with potential applications in quantum simulation. Among the different material platforms being investigated, direct-bandgap semiconductors and particularly gallium arsenide (GaAs) offer the widest range of functionalities, including single-and entangled-photon generation by radiative recombination, low-loss routing, electro-optic modulation and single-photon detection. This paper reviews the recent progress in the development of the key building blocks for GaAs quantum photonics and the perspectives for their full integration in a fully-functional and densely integrated quantum photonic circuit.

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Section: Photon Routing and Manipulationmentioning

confidence: 99%

GaAs integrated quantum photonics: Towards compact and multi‐functional quantum photonic integrated circuits

Dietrich

Fiore

Thompson

et al. 2016

Laser & Photonics Reviews

222

214

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“…13,14 In addition, the mature GaAs-based technology permits producing more sophisticated and multifunctional quantum systems, including photonic waveguides, microcavities with exceptional parameters, or photonic integrated circuits. [15][16][17][18] All these can compensate for the disadvantage of the temperature impact.…”

mentioning

confidence: 99%

Single photon emission up to liquid nitrogen temperature from charged excitons confined in GaAs-based epitaxial nanostructures

Dusanowski

Syperek

Maryński

et al. 2015

Applied Physics Letters

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We demonstrate a non-classical photon emitter at near infrared wavelength based on a single (In,Ga)As/GaAs epitaxially grown columnar quantum dot. Charged exciton complexes have been identified in magneto-photoluminescence. Photon auto-correlation histograms from the recombination of a trion confined in a columnar dot exhibit sub-Poissonian statistics with an antibunching dip yielding g(2)(0) values of 0.28 and 0.46 at temperature of 10 and 80 K, respectively. Our experimental findings allow considering the GaAs-based columnar quantum dot structure as an efficient single photon source operating at above liquid nitrogen temperatures, which in some characteristics can outperform the existing solutions of any material system.

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“…Besides ordinary integrated optical waveguides and Photonic Crystals with embedded quantum impurities [1][2][3] these systems also include superconducting waveguide-QED settings [4,5] and fiber systems with nearby trapped atoms [6]. In view of the fact that efficient integrated single-photon sources [7][8][9][10] and advanced integrated single-photon detectors [11][12][13][14] are available, the design and control of few-photon nonlinearities moves more and more into the focus of research efforts [15,16]. Such integrated sources, integrated detectors, and controlled few-photon nonlinearities represent the basic building blocks for future integrated quantum information processing technologies [17].…”

Section: Introductionmentioning

confidence: 99%

Green's-function formalism for waveguide QED applications

et al. 2016

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We present a quantum-field-theoretical framework based on path integrals and Feynman diagrams for the investigation of the quantum-optical properties of one-dimensional waveguiding structures with embedded quantum impurities. In particular, we obtain the Green's functions for a waveguide with an embedded two-level system in the single-and two-excitation sector for arbitrary dispersion relations both in the time and the frequency domain. In the single excitation sector, we show how to sum the diagrammatic perturbation series to all orders and thus obtain explicit expressions for physical quantities such as the spectral density and the scattering matrix. In the two-excitation sector, we show that strictly linear dispersion relations exhibit the special property that the corresponding diagrammatic perturbation series terminates after two terms, again allowing for closed-form expressions for physical quantities. In the case of general dispersion relations, notably those exhibiting a band edge or waveguide cut-off frequencies, the perturbation series cannot be summed explicitly. Instead, we derive a self-consistent T -matrix equation that reduces the computational effort to that of a single-excitation computation. This analysis allows us to identify a Fano resonance between the occupied quantum impurity and a free photon in the waveguide as a unique signature of the fewphoton nonlinearity inherent in such systems. In addition, our diagrammatic approach allows for the classification of different physical processes such as the creation of photon-photon correlations and interaction-induced radiation trapping -the latter being absent for strictly linear dispersion relations. Our framework can serve as the basis for further studies that involve more complex scenarios such as several and many-level quantum impurities, networks of coupled waveguides, disordered systems, and non-equilibrium effects.

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Efficient coupling of single photons to ridge-waveguide photonic integrated circuits

Cited by 29 publications

References 30 publications

GaAs integrated quantum photonics: Towards compact and multi‐functional quantum photonic integrated circuits

GaAs integrated quantum photonics: Towards compact and multi‐functional quantum photonic integrated circuits

Single photon emission up to liquid nitrogen temperature from charged excitons confined in GaAs-based epitaxial nanostructures

Green's-function formalism for waveguide QED applications

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