Photonic circuit for generating compressed light and corresponding manufacturing process
A photonic circuit with a silent pump and quantum dot laser generates compressed light efficiently, addressing integration challenges and achieving reduced noise for advanced quantum technologies.
FR3164327A1Pending Publication Date: 2026-01-09INSTITUT MINES TELECOM TELECOM BRETAGNE
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Patent Information
- Application Number
- FR2024007189
- Authority / Receiving Office
- FR · FR
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2026-01-09
AI Technical Summary
Technical Problem
Existing methods for generating compressed states of light, or 'squeezed states', are complex, bulky, and not compatible with integration on photonic circuits, limiting their practical application in advanced technologies like quantum communication and metrology.
Method used
A photonic circuit using a silent pump and quantum dot laser component integrated on a semiconductor substrate, with electron pumping proportional to the laser's threshold current, to generate compressed light states efficiently and compactly.
Benefits of technology
The solution achieves a quantum operating regime with reduced quantum noise, enabling high-precision applications such as quantum sensors and secure communications, while being compact and efficient.
✦ Generated by Eureka AI based on patent content.
Abstract
The present invention relates to a photonic circuit for generating compressed light, comprising: a constant-rate electron pumping (SPS) source, a distributed optical feedback quantum dot (QDL) laser component, the laser component being electrically coupled to the silent pump and integrated into a semiconductor substrate, the laser component having a predefined threshold current. The silent pump is configured to inject, into the laser component, a supply current with an intensity proportional to the intensity of the predefined threshold current by a factor between 1 and 5, so as to cause the laser component to generate a beam of light compressed in phase or amplitude. Figure for the abstract: Figure 1
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