Independent indistinguishable quantum light sources on a reconfigurable photonic integrated circuit

Ellis, David; Bennett, A. J.; Dangel, Christian; Lee, J.P.; Griffiths, Jonathan; Mitchell, Thomas; Paraïso, Taofiq K.; Spencer, Peter; Ritchie, D. A.; Shields, A. J.

doi:10.1063/1.5028339

Cited by 39 publications

(31 citation statements)

References 32 publications

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“…This makes it complicated to increase the number of photons used simultaneously in an experiment. One has either tune emission spectrum of different quantum dots to make them similar 162,163 , or use a single quantum dot and spatially demultiplex its output into different spatio-temporal modes using a Schematic representation of two types of triggered photon sources based on SPDC. (These concepts can be adapted to nondeterministic sources based on other technologies.)…”

Section: Generating a Photon Deterministicallymentioning

confidence: 99%

Photonic quantum information processing: A concise review

Slussarenko

Pryde

2019

Applied Physics Reviews

484

308

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Photons have been a flagship system for studying quantum mechanics, advancing quantum information science, and developing quantum technologies. Quantum entanglement, teleportation, quantum key distribution and early quantum computing demonstrations were pioneered in this technology because photons represent a naturally mobile and low-noise system with quantum-limited detection readily available. The quantum states of individual photons can be manipulated with very high precision using interferometry, an experimental staple that has been under continuous development since the 19th century. The complexity of photonic quantum computing device and protocol realizations has raced ahead as both underlying technologies and theoretical schemes have continued to develop. Today, photonic quantum computing represents an exciting path to medium-and large-scale processing. It promises to out aside its reputation for requiring excessive resource overheads due to inefficient two-qubit gates. Instead, the ability to generate large numbers of photons-and the development of integrated platforms, improved sources and detectors, novel noise-tolerant theoretical approaches, and more-have solidified it as a leading contender for both quantum information processing and quantum networking. Our concise review provides a flyover of some key aspects of the field, with a focus on experiment. Apart from being a short and accessible introduction, its many references to in-depth articles and longer specialist reviews serve as a launching point for deeper study of the field. CONTENTS arXiv:1907.06331v1 [quant-ph]

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Section: Generating a Photon Deterministicallymentioning

confidence: 99%

Photonic quantum information processing: A concise review

Slussarenko

Pryde

2019

Applied Physics Reviews

484

308

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“…For example, sources based on GaAs nanobeams have demonstrated source efficiencies of 10.3% with single photon purities of 99.4% . On‐chip integration has also been demonstrated using hybrid approaches where various two‐level systems are coupled to silicon‐based photonic circuits, inspired by techniques developed for laser integration . Zadeh et al., for example, have demonstrated a pick‐and‐place technique where individual InAsP/InP quantum dot nanowires are transferred from the growth substrate to a silicon substrate.…”

Section: Experimental Transmission and Detection Efficiencymentioning

confidence: 99%

On‐Chip Integration of Single Photon Sources via Evanescent Coupling of Tapered Nanowires to SiN Waveguides

et al. 2019

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A method to integrate nanowire‐based quantum dot single photon sources on‐chip using evanescent coupling is demonstrated. By deterministically placing an appropriately tapered III‐V nanowire, containing a single quantum dot, on top of a silicon‐based ridge waveguide, the quantum dot emission directed toward the taper can be transferred to the ridge waveguide with calculated efficiencies close to 100%. As the evanescent coupling is bidirectional, the source can be optically pumped in both free‐space and through the ridge waveguide. The latter configuration paves the way toward a self‐contained, all‐fiber, plug‐and‐play solution for applications requiring a bright on‐demand single photon source. Using InAsP quantum dots embedded in InP nanowire waveguides, coupling efficiencies to a SiN ridge waveguide of 74% with a single photon purity of 97% are demonstrated. The technique to demonstrate deterministic placement of single quantum emitters onto pre‐fabricated waveguides is used, an important step toward the fabrication of complex quantum photonic circuits.

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“…The major hosts of many examples and demonstrations for QIP [3,10,11] have been so far doped silica and silicon-on-insulator (SOI). Out of the silicon-based platforms, silicon nitride is attracting increasing interest for its great potential in implementing on-chip single-photon sources [12], detectors [13,14], quantum walks [15] and time-bin encoding for quantum communication [16]. The advantage of this platform compared to the aforementioned ones, is the unique combination of high index contrast [17] for low bend loss, and ultra-low straight-propagation loss [18], enabling thus both dense and low loss linear optical networks (Fig.1) on a reasonably compact footprint, essential for the development of QIP.…”

Section: Introductionmentioning

confidence: 99%

8×8 Programmable Quantum Photonic Processor based on Silicon Nitride Waveguides

Taballione

Wolterink

Lugani

et al. 2018

Frontiers in Optics / Laser Science

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We demonstrate a reconfigurable 8×8 photonic integrated circuit suitable for implementing universal gates for quantum information processing protocols. The processor is implemented as a square mesh of tunable beam splitters based on stoichiometric silicon nitride waveguides, containing 128 tunable elements. In order to demonstrate its versatility, we perform a variety of photonic quantum information processing primitives, in the form of Hong-Ou-Mandel interference, bosonic coalescence/anti-coalescence and highdimensional single-photon quantum gates exploiting the whole mode structure of the processor. We achieve fidelities that demonstrate the potential for large-scale photonic quantum information processing using stoichiometric silicon nitride.

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Independent indistinguishable quantum light sources on a reconfigurable photonic integrated circuit

Cited by 39 publications

References 32 publications

Photonic quantum information processing: A concise review

Photonic quantum information processing: A concise review

On‐Chip Integration of Single Photon Sources via Evanescent Coupling of Tapered Nanowires to SiN Waveguides

8×8 Programmable Quantum Photonic Processor based on Silicon Nitride Waveguides

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