Diamond-based quantum technologies

Abstract

Optically accessible spins associated with defects in diamond provide a versatile platform for quantum science and technology. These spins combine multiple key characteristics, including long quantum coherence times, operation up to room temperature, and the capability to create long-range entanglement links through photons. These unique properties have propelled spins in diamond to the forefront of quantum sensing, quantum computation and simulation, and quantum networks.

Machine and quantum learning for diamond-based quantum applications

“…One of the key factors that makes diamond desirable for quantum applications is its ability to host color centers. These are isolated atom-like defects consisting of foreign atoms and vacancy complexes that display unique spin-optical quantum properties with long coherence time, room-temperature operation and the ability to address and create entangled states [23]. As a solid-state host, diamond also brings the desirable feature of scalability.…”

“…In this review, we specifically look at how developments in ML and QML are advancing the field of diamond-based quantum applications. Color centers in diamond have quickly become archetypal systems for quantum technologies owing to their optically-addressable spins, long coherence times, room-temperature operation and the ability to create long-range entanglement through photons [23]. Notably, as some of the proposed diamond-based applications have become established, the field is organically shifting its focus from carrying out proof-of-principle experiments to engineering practical realizations that are technology oriented.…”