Quantum Enhanced Photonic Integrated Sensors For Metrology

About Quantify:

Project QUANTIFY aims to advance quantum sensing beyond classical limits by developing highly integrated, user-friendly photonic quantum sensors for real-world applications.

The project focuses on creating key building blocks and quantum-enhanced techniques for chip-scale optical clocks, optically pumped magnetometers, and optomechanical temperature sensors. By combining multiple photonic integrated platforms through advanced hybrid integration, QUANTIFY will bring essential optical and optomechanical functionalities onto a single chip. A central innovation is the development of an integrated squeezed-light source to boost sensor performance beyond classical capabilities, with broader relevance for photonic quantum computing. Additionally, the project will demonstrate a novel absolute temperature sensor operating from cryogenic to room temperatures using nanoscale optomechanics. Through precise photonic integration and dispersion engineering, QUANTIFY aims to improve sensor reproducibility, while its interdisciplinary consortium, including metrology institutes, will benchmark performance against existing standards and contribute to new metrological procedures.

Figure 1. Hybrid integration in multidisciplinary technology and its applications

Objectives of the project:

  • Develop a photonic integrated squeezed light source (PICSq)
  • Develop a quantum-enhanced optically pumped magnetometer (OPM) using a photonic-integrated squeezer and miniaturized atomic vapor cells
  • Develop a miniaturized quantum-enhanced TPOC with PIC and MEMS components
  • Develop a photonic/phononic integrated Quantum Enhanced Temperature sensor
  • Assess and characterize the metrological performance of quantum-enhanced sensors

Figure 2. Representation of the PICSq chip

The Role of LioniX International:

  • Realization of SiN circuitry for targeted applications and coupling to the gain chip:
  1.  Design and fabrication of the sensor motherboard, including a laser cavity in Triplex®, together with electrical circuitry for power and wavelength tuning.
  2.  Realization of spot-size converters, alignment, and gluing for coupling the gain section to the Triplex®, depending on the sensor requirements.
  3.  Dedicated circuitry (power splitters and filters), and one or multiple gain sections will be implemented to achieve the desired wavelenghts and power levels.
  • Creation of dedicated sensing windows to access the SiN circuitry to enable microtransfer printing.
  • Defining key laser specifications (wavelength, power output, tunability, and linewidth) based on the application performances.
  • Delivering a narrow-linewidth photonic integrated tunable laser at 780 nm and 1550 nm.

FURTHER INFORMATION:

🌐 Visit the project’s website for all the details of the full objectives and project partners