Magnetocardiography (MCG), which is nowadays 60 years old, has not yet been fully
accepted as a clinical tool. Nevertheless, a large body of research and several clinical trials …

Diamond is a potential host material for laser applications due to its exceptional thermal
properties, ultrawide bandgap, and color centers, which promise gain across the visible …

We present a sensitive diamond quantum sensor with a magnetic field sensitivity of 9.4±0.1
pT/Hz in a near-dc frequency range of 5 to 100 Hz. This sensor is based on the continuous …

In quantum sensing of magnetic fields, ensembles of nitrogen-vacancy centers in diamond
offer high sensitivity, high bandwidth and outstanding spatial resolution while operating in …

Scalable and addressable integrated manipulation of qubits is crucial for practical quantum
information applications. Different waveguides have been used to transport the optical and …

Portable quantum sensors are crucial for developing practical quantum sensing and
metrology applications. Fiberized nitrogen-vacancy (NV) centers in diamonds have emerged …

Masers—the microwave analog of lasers—are coherent microwave sources that can act as
oscillators or quantum-limited amplifiers. Masers have historically required high vacuum and …

This special issue discusses current progress in the utilization of defect centres in diamond
as spin–photon interfaces for quantum applications. This issue is based on the discussions …

The nitrogen-vacancy (NV) centers ensemble has extensive application prospects in vector-
magnetic-field measurement due to its accurate and fixed spatial orientations along the …

A diamond nitrogen-vacancy (NV) ensemble has been developed as a vector magnetometry
platform for sensing external time-varying magnetic fields. However, due to the complexity of …