ROLE OVERVIEW
We are seeking an exceptional Quantum Physicist to lead the physics, modelling, and experimental validation components of a cutting-edge feasibility project. The project aims to demonstrate that quantum gravimeters and quantum magnetometers can detect subsurface hazards (voids, water ingress, weak ground) beneath UK transport infrastructure.
The Quantum Physicist is responsible for building the physical models, designing and executing calibration experiments with partner labs, interpreting sensor behaviour, and ensuring the scientific credibility of the AI-driven anomaly detection platform.
You will work directly with the Data Scientist and Geophysicist
KEY RESPONSIBILITIES
1. Physics Modelling & Simulation
You will lead all quantum-physics and geophysical modelling.
Tasks
- Develop forward models for :
- quantum gravimeter response to voids, sinkholes, water ingress
- Quantum magnetometer response to ferrous and geological structures
- Implement analytical or numerical models for :
- mass-density contrasts
- gravitational fields and gradients
- magnetic susceptibility contrasts
- Create realistic, physics-accurate synthetic datasets for AI training.
- Model the sensor’s transfer function, including :
- vibration coupling
- laser phase noise
- interferometer stability
- gravity-gradient and magnetic-gradient effects
- Work closely with the AI Specialist to verify the realism of simulated signatures.
Outputs
Complete simulation library of hazard scenariosPhysics-based anomaly mapsSensor-response modelling report2. Laboratory Calibration & Controlled Experiments
Lead calibration and validation using university & metrology facilities (no physical presence required)
Tasks
Prepare and configure the quantum sensor testbed :atom interferometer alignmentoptical system stabilitymagnetometer sensitivity optimisationvibration isolation and environmental controlRun controlled experiments with known reference anomalies :known masses (gravity)void analogueswater-equivalent targetsmagnetic inclusionsQuantify sensor sensitivities :sub-µGal sensitivity (gravity)pT–fT sensitivity (magnetics)Characterise :repeatabilitydrifttemperature dependencenoise bandwidthsCollaborate with NPL to obtain traceable metrology validation.Outputs
Calibration curvesSensitivity thresholdsNoise characterisation datasetMonth 2 laboratory feasibility report3. Sensor Interpretation & Noise Analysis
You will be the primary owner of understanding what the sensor is actually measuring.
Tasks
Decompose recorded signals into :true anomaly signaturesplatform-induced noiseenvironmental artefactsquantum projection noiseWork with IMU data to model motion-induced biases.Support the AI team by delivering :corrected time-seriesnoise modelsuncertainty estimatesRecommend optimised data-acquisition protocols for future field deployments :sampling ratescycle timesmotion constraintsOutputs
Sensor noise PSDsTransfer function modelsMotion / noise compensation algorithms4. Integration with AI
The physicist ensures AI models stay physically meaningful.
Tasks
Translate physics constraints into data features.Define which anomaly signatures are physically plausible.Validate whether AI-detected anomalies are physically consistent.Guide feature engineering :gradientscurvaturebandwidth of anomaliesAssist in fusing gravity & magnetic data into a joint physical interpretation.Outputs
Physics-constrained ML feature setValidation notes for anomaly detectionsJoint gravity–magnetic hazard interpretation5. Technical Leadership in Hazard Interpretation (Month 3)
Support production of the transport use case and business case.
Tasks
Determine detection thresholds for each hazard type :minimum void sizemaximum detectable depthwater ingress sensitivityBuild capability envelopes (performance charts).Provide a scientific assessment of feasibility.Outputs
Sensitivity / detection threshold mapsTechnical content for final feasibility reportContributions to transport use case & business caseESSENTIAL SKILLS & EXPERIENCE
Quantum Sensing & Atomic Physics
Experience with cold-atom interferometry, quantum gravimetry, or atomic magnetometry.Understanding of :Rabi / Raman transitionslaser phase noiseatom opticsmagnetic resonance in atomic vapour cellsGeophysical Modelling
Understanding of gravity and magnetic fields in Earth sciences.Experience with forward modelling and inversion.Laboratory Experimental Skills
Hands-on experience building or operating :optical setupsvacuum systemslaser systemsmagnetically shielded environmentsAbility to design and run controlled physics experiments.Signal Processing
Experience in analysing noisy scientific data.Familiarity with FFTs, PSD analysis, and filtering.Software Skills
Python, MATLAB, or similar scientific computing tools.Experience with modelling libraries (SciPy, NumPy, Fatiando a Terra, QuTiP, COMSOL).Communication
Ability to explain complex physics to engineers and non-physicists.Strong technical writing for reports and publications.DESIRABLE SKILLS
Experience with quantum gravimeters from Exail, Muquans, Atomionics, Aquark, or research prototypes.Understanding of geotechnical engineering or subsurface hazards.Familiarity with drones, mobile mapping, or rail / road instrumentation.Knowledge of Bayesian filtering, Kalman filters, or motion-compensation methods.Prior work in NPL, university quantum labs, or national labs a plus.QUALIFICATIONS
Essential :
PhD in Atomic Physics, Quantum Optics, Quantum Sensing, Experimental Physics, or a closely related field ORHighly relevant industrial / research experience with proof of technical capability.Preferred :
Postdoctoral or industry experience in quantum sensing or precision metrology.