Picotesla Precision:
Magnetic field sensor measures the finest currents using quantum technology

The Q.ANT Magnetometer enables highly precise magnetic field measurements. New everyday applications emerge due to its compact size and operation at room temperature.

Responds sensitively and precisely to magnetic fields

The Q.ANT magnetic field sensor enables the measurement of magnetic fields in the range of 300 picotesla at room temperature.

Previously, this level of sensitivity was only achieved by sensor systems under very specific environmental conditions: cooled down to absolute zero at -273 °C (or -459.4 °F) or heated up to 150 °C (or 302 °F).

The Q.ANT benefits

  • Extremely high sensitivity under everyday conditions

  • Large dynamic range: Captures very weak magnetic field changes even in strong background fields

  • High spatial resolution

  • Magnetic field direction detection: Allows, for example, conclusions about the location of the magnetic field source

Medical technology
Human Machine Interface (HMI)
Electronics and material analysis
Biophysics and nanotechnology
Automotive and mobility


Located at the heart of the sensor, becomes sensitive to magnetic fields by inserting an adjustment in the atomic lattice, called an NV doping


bring the NV dopings into a magnetic field-sensitive state

External magnetic field:

acts on the sensor

Green laser:

shines on the NV diamond and causes the NV doping to fluoresce with red light

Red fluorescence light:

Changes when the external magnetic field changes


Captures the fluorescence light

Control unit:

Processing of photodetector data


User-friendly display of the signal

The functionality of the Q.ANT Magnetometer

NV magnetometry is based on nitrogen-vacancy centers in diamonds, which serve as extremely sensitive sensors for magnetic fields.

NV stands for “nitrogen-coupled vacancy” or “nitrogen-vacancy” in English. In an NV center, a nitrogen atom is placed in the diamond lattice structure instead of a carbon atom. Next to it is an empty position / vacancy.

"How far can we go on the picoscale? The potential of quantum magnetic field measurement for industry and everyday life is immense, and we are just beginning to unfold it."

Robert Rölver

Head of Quantum Sensing, Q.ANT

Quanten-Technologie industriell einsetzen? Mit Q.ANT ist das möglich.

Option 1: Der Einsatz im Labor

Einfacher war es nie, Quantentechnologie einzusetzen: Der Partikelsensor, der für den Laboreinsatz entwickelt wurde, kann als fertiges Produkt ohne großen Aufwand eingesetzt werden. Die Vorteile liegen auf der Hand: Weniger Vorlaufzeit und kurzfristiger Einsatz für Ihren Anwendungsfall.

Option 2: Integriert in Ihren Prozess

Der Q.ANT In-Prozess Partikelsensor wird exakt auf Ihren Anwendungsfall zugeschnitten. So stellen Sie sicher, dass exakt das gemessen wird, was Sie brauchen. An genau der Stelle, wo Sie es brauchen. Wir freuen uns, Ihre Anforderung mit Ihnen zu besprechen.

Quanten-Technologie zur Miete: Evaluieren Sie Ihren Anwendungsfall

Unser Evaluation-Kit macht es Ihnen einfach, Quanten-Technologie für Ihren Einsatz zu testen: Mieten Sie die Hardware für einen von Ihnen definierten Zeitraum, um den Q.ANT Partikelsensor auszuprobieren. Die Schulung und Anleitung durch unsere Experten hilft Ihrem Team, die Technologie und ihr Potential im Kontext Ihres speziellen Anwendungsfalls einordnen zu können.

Problemlos, On Demand und mit voller Kostenkontrolle.

Q.ANT is a strategic partner of

Press Releases

Q.ANT presents the potentials of quantum technology at the Hannover Fair

"Wenn andere Sensoren an ihre Grenzen kommen, fangen wir an."

– Dr. Andreas Schürzinger

Your contact

robert roelver qant

Robert Roelver

Head of Quantum Sensing

Let’s explore and discuss the impressive potential of our magnetic field sensor.

Ready to take the quantum leap?

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    Join the Q.ANT team!

    Are you passionate about quantum technology and eager to shape the future? Explore exciting career opportunities at Q.ANT! Click here to visit our dedicated Careers page, where you can learn more about open positions, our company culture, and how to apply. Become part of our innovative team and make a lasting impact in the world of quantum photonics.

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    About Q.ANT

    Q.ANT harnesses quantum technology for numerous industries and use cases. Founded in 2018 as part of the Trumpf Group in Stuttgart, the company develops quantum sensors and quantum computer chips across four product lines: Photonic Quantum Computing, Particle Metrology, Gyroscopes, and Magnetic Field Measurement.

    Q.ANT Magnetometer in the Media