Sparrow’s integrated chip for on‑demand single-photon streams
Explore the Sparrow Quantum single-photon chip, combining ultra-precise InAs/GaAs quantum dot structures with photonic crystal waveguides to emit highly coherent single photons.
How does it work?
For optimal use, the chip must be mounted in a low-vibration cryostat with electrical and optical access.
The quantum dot is excited by a pulsed laser which is focused onto the chip containing the quantum dot emitter via a confocal microscope objective.
Single-photon emission is collected via the same objective, and the laser pump light is automatically filtered out thanks to the photonic crystal nanostructures. The single-photon stream is hence ready-to-use.
A scalable and efficient solution for quantum light generation
With over 15 years of research achievements, our expertise in nanophotonic design and fabrication has culminated in the development of our world-class product: an on-chip, scalable, and deterministic single-photon source.
The planar design for our quantum emitter chip is absolutely unique: we can guide quantum light along the chip with >90% efficiency. An ultra-low noise environment is achieved by applying a controlled electric field to trap the residual charges that typically deteriorate the emission coherence of the quantum dot. The combination of these features leads to the highest fidelity of single-photon generation available in the market.
Typical performance
| Single-photon purity | 95-98% |
|---|---|
| Single-photon indistinguishability | 90-98% |
| Fiber brightness | 20%* |
| Emission wavelength | 920-980 nm |
| Excitation wavelength | same as emission wavelength |
| Single-photon pulse width | 200-500 ps |
*15–20 MHz at 80MHz excitation
Coming soon: fiber-coupled chip and an integrated system
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