We present a fixed-alignment platform for delivering single photons directly in fiber using chip-integrated nanowire quantum dots. Emission from III–V nanowire quantum dots is evanescently coupled to silicon-based integrated photonic circuitry. Fiber arrays fixed to the chip are used to efficiently and reliably couple light on- and off-chip allowing for plug-and-play operation of multiple sources on the same chip. We demonstrate plug-and-play in-fiber single photon collection efficiencies of ηeff>1.6% from multiple devices on the same chip with multiphoton emission probabilities as low as g(2)(0)=7.2%. Device performance was robust against multiple cooldown cycles and stable over tens of hours of continuous operation. Such fiber-coupled single photon sources will be a key resource required for distributing quantum information in future quantum networks.
An efficient single-photon nonlinearity is a key resource for photonic quantum technologies. Single-photon nonlinearities have been demonstrated with quantum dots (QDs) across a range of cavity and waveguide geometries. However, none of these realizations simultaneously provide high-efficiency direct fiber coupling and...
Abhijit Biswas, N. Vij, A. Bracker et al.· 1 citation
Wavelength-tunable sources of single photons are key devices for scaling up optical quantum technologies. In this context, individual quantum dots (QDs) embedded in broadband photonic nanostructures are particularly appealing. The nanopost cavity, which is built with a segment of photonic wire, offers a rare combinatio...
Maxime Gaignard, L. De Santis, M. Nahra et al.· APL Quantum· 0 citations
Semiconductor quantum dots (QDs) are a leading platform for realising bright, wavelength-tunable sources of single and entangled photon pairs for photonic quantum technologies. Site-selected nanowire quantum dots (NWQDs) are a promising platform for fabricating such photonic devices in a scalable manner. However, imple...
Tarun Patel, Matteo P. Pennacchietti, G. Holloway et al.· 0 citations
We report the fabrication and characterization of an integrated quantum photonic device consisting of an electrically driven whispering-gallery-mode micropillar laser evanescently coupled to a ridge waveguide, both incorporating InGaAs quantum dots (QDs). The lasing characteristics of microlasers are systematically i...
Léo J. Roche, P. Gschwandtner, C. Palekar et al.· Nano letters (Print)· 0 citations
Integrated quantum photonic circuits are a key enabling technology for the scalability of quantum information systems. Among the available platforms, silicon photonics offers an unrivalled capability for the large-scale integration of photonic components within compact footprints. However, the strong index contrast tha...
David E. Medina, P. Robin, R. Dalidet et al.· 0 citations
Squeezed light underpins quantum-enhanced sensing and continuous-variable quantum information processing, and integrated photonics offers a route to producing it at scale. Universal to these applications are squeezed-light generation and measurement. Importantly, quantum measurements serve not only as readout but also...
Haoran Chen, Ben Westcott, Fatemehsadat Tabatabaei et al.· 1 citation
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