e Delight

Solid-state quantum light emitters & qubit control unit

The optical qubit generator efficient and deterministic

Electrically controlled photonic chip containing a set of integrated sources.
Fully deterministic Reliable Efficient Pure

EDELIGHT chip device containing a set of integrated source, all electrically contacted.

Active-alignment version

The eDelight chip is installed in a low-vibration cryogenic system equipped with nanopositioners, for the active alignment of the single-photon sources. Laser excitation and single-photon collection is performed via one single-mode optical fiber placed right on top of the device at 4 Kelvin.
The installation of the optical fiber in the cryogenic system in possession by the customer is performed by Quandela’s engineers.

Scanning electron microscope image showing part of the micropillar single-photon sources.
Each one is deterministically fabricated, coupling a single quantum dot to a high-quality optical cavity.
Fibre-pigtailed EDELIGHT device. Proprietary technology.

Pigtailed version

A micrometer-size single-photon source of eDelight is coupled and pigtailed to a single-mode fiber with high efficiency and long-term stability.
With this technique, the pigtailed eDelight chip can be installed in a standard cryogenic system, providing an “alignment free solution”: there is no need for nanopositioners, special cryostats, or free-space optical access.
This technology also enables the simultaneous integration of eDelight with superconducting nanowire detectors in cryogenic systems.
Consult with our technical support for the compatibility with your existing cryogenic system.

Fibre-pigtailed EDELIGHT device inserted in a compact cryogenic system to guarantee plug-and-play operation with no active alignment required.


Who are we

Quandela brings state-of-the-art technology and combines it with the strong dedication of its teams. We build unique solid-state sources of quantum light and create quantum algorithms to power a new generation of quantum computers, available on the cloud.

Join our team

Be part of an experience: Quandela is a growing company with large ambitions and a limitless potential. If like us you’re a passionate scientist or technologist, hungry for a challenge and with long term vision, come work with us and together, we’ll tackle on the quantum revolution!

Who trusts us

From industries and commercial partners working with us to develop new quantum computing use-cases, to funding agencies and investors supporting the scale-up of our technology; to the scientific community integrating Quandela’s components and adopting our cloud solutions to tackle multiple quantum applications.

Ask for solutions

Request access to our quantum computing platform and solutions by contacting our teams.