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Today, amid the second quantum revolution new sensing schemes offer higher sensitivities and better resolution thanks to the possibility to detect and control individual quantum states in microscopic systems like atoms, quantum dots, or color centers. Emerging quantum sensing techniques could lead to the improvement of sensing technologies ranging from quantum gravitometers and accurate atomic clocks to low-noise quantum-interference microscopy and ultimately find commercial uses in gyroscopes for self-driving cars, or brain-machine interfacing via magnetic-field sensing.

At the heart of quantum computing are qubits, the quantum analogs of classical bits. Unlike classical bits, which can be either 0 or 1, qubits can exist in a superposition of states, embodying both 0 and 1 simultaneously. This property, along with entanglement and quantum interference, enables quantum computers to solve complex problems more efficiently than classical computers.

Cooling atoms to ultralow temperatures has produced a wealth of opportunities in fundamental physics, precision metrology, and quantum science.

Most early attention has focused on nitrogen vacancy centres in diamond − which offer single-photon emission at room temperature − but they are not ideal for all applications because their asymmetric charge distribution makes them sensitive to local fluctuations in the electric field. Read how our C-WAVE tunable laser helps researchers find new colour centers candidates.

As quantum sensing technology has matured over recent years, one of the contending techniques for commercially developed systems is based on nanoscale magnetometry with Nitrogen-Vacancy (NV) centers in diamond. In this white paper we give an overview of the current proposed solutions for quantum sensors based on NV center magnetometry.