What are the key benefits of Quantum sensors? How it is used?

A quantum sensor is a device that exploits quantum correlations, for example quantum entanglement, to achieve a sensitivity or resolution that is better than can be achieved using only classical systems.

Quantum sensors take benefit of the quantum nature of matter to measure physical quantities for example frequency, acceleration, rotation rates, electric and magnetic fields, or temperature with the maximum relative and absolute accuracy. These measurements let for local and reproducible calibration with direct relation to natural or fundamental constants.

Example of Quantum sensor

• APD avalanche photo-diode : This is a semiconductor device. It provide a photo electric effect which convert light into electricity.

Typical Applications

• Applications of quantum sensors contain:
•     PPFD measurements over plant canopies in outdoor environments, greenhouses, and growth chambers
•     Under-canopy (transmitted) PPFD measurements in outdoor environments, greenhouses, and growth chambers\
•    PAR/PPFD measurements in aquatic environments, containing salt water aquariums where corals are grown

By means of real-world applications, highly effective quantum sensors could be game-changing. Quantum systems are sensitive to the slightest environmental changes, so these detectors have the likely to be incredibly powerful.

Also, some unfamiliar components of quantum behavior, for example quantum entanglement, could make them even stronger. Quantum entanglement, a puzzling phenomenon even for scientists, describes how two particles can be separated by a huge distance yet actions performed on one particle immediately affect the other. This entanglement can be harness to make quantum sensors amazingly resilient against certain kinds of noise.

Researchers are focusing on quantum sensors for other types of measurements. NIST Chemist J. Hendrix has developed a pressure sensor that uses the basic properties of helium atoms so that aircraft pilots can finally use to measure the height.

The sensor works by making a laser helium in a glass chamber filled with gas, which changes the color of the laser according to the outside force. They have used the version of this device to create a national standard for pressure, which the airlines use to calibrate all pressure sensors.