Quantum Metrology

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Our Service#

Quantum-based measurement methods and sensors exploit special effects of quantum physics, such as quantum entanglement, and will allow research to develop applications with unprecedented high sensitivity and accuracy in the future.

Quantum imaging uses non-classical photon states to make imaging with previously unused wavelengths possible, e.g. for applications in biology, medical or metrology. In this field, Fraunhofer ILT is developing, among other things, parametric photon sources for quantum imaging applications in the mid-infrared (MIR), where many substances have characteristic absorption lines. With entangled photons, interaction and detection wavelengths can be separated and highly sensitive silicon detectors used to evaluate image information. 

Illustration for the superposition of single waves, which can visualize the probability density for the position of a particle, for example.
© agsandrew - stock.adobe.com
Illustration for the superposition of single waves, which can visualize the probability density for the position of a particle, for example.
Optical components in a nonlinear interferometer for quantum imaging.
© Fraunhofer ILT, Aachen, Germany / Volker Lannert.
Optical components in a nonlinear interferometer for quantum imaging.
Parametric source for the generation of entangled photons.
© Fraunhofer ILT, Aachen, Germany / Volker Lannert.
Parametric source for the generation of entangled photons.

New solutions based on quantum technology are also in demand in production metrology: Here, the combination of optical coherence tomography (OCT) with quantum imaging is of particular interest. The OCT method can be combined with quantum interferometers, e.g. to detect internal defects and volume properties in ceramics.

Quantum sensors will make applications with unprecedented sensitivity and accuracy possible. Nitrogen vacancy (NV) centers in the lattice structure of diamond crystals can be used, for example, to measure magnetic fields with particularly high sensitivity. In the Fraunhofer Cluster of Excellence Advanced Photon Sources CAPS, Fraunhofer ILT is conducting research, among other things, on generating NV centers in diamond using ultrafast laser pulses.

Fraunhofer ILT is also involved in developing high-precision thorium-229 clocks based on quantum technology. These use a radiation transition in the thorium atomic nucleus and are expected to exceed the accuracies of all previous cesium and optical atomic clocks. Thorium nuclei are excited with high-precision lasers, which are the subject of current research.

Selected Research Projects#

Fraunhofer Cluster of Excellence Advanced Photon Sources CAPS

Fraunhofer Lighthouse Project »QUILT«

Quantum Methods for Advanced Imaging Solutions

Videos#

 

Video / March 4, 2021

The Next Generation of High-Power Ultrafast Lasers

In the Fraunhofer Cluster of Excellence Advanced Photon Sources CAPS, 13 Fraunhofer Institutes bundle their expertise for the development of laser systems that achieve highest performance with ultrafast laser pulses and explore their application potential.

 

Video / April 26, 2019

Quantum Technology at Fraunhofer ILT

In the field of quantum technology, we are at the beginning of the technical realization of so far unexploited effects that enable novel applications. The Fraunhofer ILT scientists are developing, among other things, photon sources, photonic components and systems for future applications of quantum technology.

Branches#

Laser technology contributes to the digitisation in various industries. Whether as a material processing tool in automotive manufacturing, as a measuring device in the environmental sector, as a diagnostic or therapeutic instrument in medical technology or as a communication medium in space technology, the laser offers multiple application possibilities with high productivity and high efficiency.

You will find further information and a selection of our products and services on the industry websites.

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Our services cover a wide range of topics. Related topics to quantum metrology and further research and development focuses can be found under the following links.