PQS is developing a software or firmware layer that evaluates a selected noise or information objective alongside an instrument’s existing control.
Noise-stationary locking, or NSL, makes small adjustments and observes how a defined noise objective responds. It seeks a favorable operating region where small changes no longer improve that objective.
Normalization helps distinguish changes in noise from changes in measurement strength. Separate signal checks are essential: a quieter output is useful only if the information you need is still there.
A stationary point is not automatically a minimum or the best place to measure. Curvature, constraints, signal sensitivity, and the behavior of the controller must all be checked.
Maintain the main lock and acquire detector data.
Compute an objective whose relationship to useful measurement is established.
Evaluate small changes and update an accessible setting within constraints.
Monitor signal preservation, calibration, and the measurement outcome.
Integration architecture under development. No platform compatibility is implied.
The first questions are practical: what can be adjusted, what limits the measurement, and what reference will show that the adjustment helped?
Displacement and optical-path measurements provide a direct way to compare a noise objective with a calibrated physical result.
Success would mean: lower uncertainty or fewer unusable measurement periods while preserving calibration and response speed.
Optical coherence tomography uses interference to inspect internal structure and surfaces. Its performance depends on the instrument, sample, and measurement conditions.
Success would mean: improved repeatability or usable signal under defined disturbances, with resolution and acquisition speed checked separately.
Laboratories can investigate whether a controllable noise optimum predicts a better estimate of a known signal.
Success would mean: a repeatable benefit that survives independent signal injection, reference comparison, and uncertainty analysis.
These are proposed applications, not validated customer deployments. For established OCT context, see Fraunhofer IPT’s OCT research.
| Approach | Established strength | PQS’s proposed additional role |
|---|---|---|
| Laser and cavity stabilizationMoku Laser Lock Box | Modulation, demodulation, and feedback controllers for stabilizing an optical system. | Evaluate a separate quality objective alongside the primary lock. Optical integration remains unproven. |
| Lock-in detectionZurich Instruments | Reference-based extraction of weak signals, with analysis and feedback options. | Adjust operating conditions using a validated quality objective. No head-to-head advantage has been shown. |
| Balanced detectionNewport balanced receivers | Suppress noise shared between two detection channels, subject to receiver balance and bandwidth. | Investigate residual noise that depends on an accessible operating condition. |
| Isolation and component upgradesOptical isolation systems | Address mechanical disturbances and component-specific noise sources. | Adapt to remaining controllable changes. No evidence that PQS replaces these measures. |
| Adaptive optimizationExtremum-seeking research | Established feedback methods adjust parameters toward an optimum. | Develop instrument-specific objectives, normalization, and supervision; comparative advantage remains to be tested. |
Named companies are market references, not announced PQS partners. PQS has no measured optical performance advantage over these products. Vendor specifications cannot be fairly compared with the electrical objective reported here.
Advanced supervisory control is the broader concept. Each extension needs its own objective, instrumentation, and evidence.
Investigate controlled auxiliary fields and recovery of known signatures. Squeezed-state variants require optical and quantum-specific validation.
Read the concept papers →Explore objectives associated with contrast, readout statistics, timing, and measurement information.
Learn about matter-wave sensing →Consider whether supervised quality objectives are useful in frequency references and coherent optical links. No validated modules are offered.
PQS has filed U.S. patent applications. Filing does not establish a granted claim, product readiness, freedom to operate, or commercial exclusivity.
Have an instrument with a measurable limitation and an accessible control? Let’s define a focused evaluation.
