Invited Speakers

  • Photonic Integrated Circuits for Cavity Optomechanical Inertial Sensors: From the Classical to Quantum Regime

    High-volume low-cost optical devices can be realised through scalable photonic integrated circuits (PICs) to create optical analogues of existing technologies that benefit from increased signal-to-noise readout and the coherence of lasers. Zero Point Motion reports on progress in developing chipscale optical inertial sensors, where an optical resonance is highly sensitive to the mechanical response of inertial test-masses. When optimised, these so-called cavity optomechanical systems can reach displacement sensitivities at 10^(-18)m/Hz^(1/2), with paths towards quantum sensing where the mechanical test-mass is cooled to a macroscopic quantum ground state. Our core mission is first commercialising classical sensors with 100x lower noise floor than existing automotive accelerometers and gyroscopes, exploiting the PIC supply chain to mass-produce photonics chips with integrated lasers and detectors, and combining these semiconductor fabrication steps with existing MEMS processes to create released test-mass structures.

  • PinPoint® Thin Film PZT MEMS Gyroscope

    A brief description of the PinPoint® PZT Coriolis Vibratory Gyro inertial sensing performance, construction and mode of operation, including key properties and characteristics of the PZT film used as both gyro actuator and transducer.

  • Quantum Sensors for Inertial Navigation

    Satellite navigation systems cannot be relied on underground or underwater, they are vulnerable to local weather conditions, and can be spoofed or blocked. To overcome some of these vulnerabilities the Imperial team are developing inertial sensor technologies that harnesses quantum physics to deliver measurements of acceleration and rotation with extremely low scale factor and bias drift. I will present recent results from our multi-axis laboratory sensor that can measure accelerations and rotations in a single unit. I will also introduce our new transportable quantum inertial sensor that is currently undergoing moving platform field trials.