Amplified spontaneous emission at nv centers in diamond under optical pumping

Abstract

NV – centers in diamond – a unique quantum object, which potentially implements singlephoton sources for quantum cryptography problems, physical implementation of q-bits (quantum logic elements), magnetometric sensors, etc. [1–3]. The creation of photonic integrated circuits based on diamond involves the creation of optical analogs of elements implemented in existing integrated circuits, that is, in the process of growing a diamond processor, it is necessary to create optical fibers, splitters, interferometers and integrated laser sources. But if the creation of a passive element base based on diamond does not cause difficulties, the implementation of laser sources was hampered by the presence of two diamond charge states (NV0 and NV-). As shown by recent studies [4], the neutral charge state (NV0 – center) is a negative factor for the generation of laser radiation