Dear Colleagues,

The laws of quantum mechanics have led to transformative advances in science and technology, and promise to revolutionize industry and society, with disruptive applications in many domains.

Nowadays, quantum technologies are experiencing fast growth. Recent progress in quantum sensing and metrology, quantum magnetometry, quantum clocks, and quantum gravimetry is opening the way to new applications in geodesy, navigation, earth observations, and hazard detection. Research and development on quantum simulations and quantum computing based on photonics or cryogenic platforms are pushing advances in new materials discovery, algorithms for the decryption of crypted information, and optimization problems. Quantum communication is attracting increasing interest for applications in quantum key distribution, quantum internet, and distributed quantum computing.

Among quantum technologies, quantum sensing is probably the most mature, and is expected to offer unprecedented advantages in a wide range of contexts, ranging from biomedicine, to material science, and from navigation to defense and environmental monitoring. The development of innovative sensing schemes and systems is expected to also advance communication applications.

The present Special Issue aims to collect recent advances in quantum sensing technologies and their enabling technologies, covering quantum sensors ranging from optronic devices—with a particular interest in the near- and mid-infrared spectral regions of the electromagnetic spectrum—to sensors of magnetic and radiofrequency fields, from gravimeters to sensors of frequency and time.

Topics of primary interest include but are not limited to the following areas:

• Novel quantum sensing schemes (modelling and technical implementation);
• Diamond-based sensing and imaging;
• Atomic magnetometers;
• Optical clocks;
• Gravimeters;
• Entangled imaging schemes and systems;
• New light sources and detectors;
• Quantum schemes in non-conventional spectral regions;
• Development of optoelectronic quantum devices operating in IR wavelength range;
• Development of photonics integration system.

Authors can submit review articles, original research papers, and short communications covering all aspects of quantum sensing technologies and their enabling technologies.

Dr. Mario Siciliani de Cumis
Dr. Nicole Fabbri
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Optics is an international peer-reviewed open access quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1200 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

• quantum sensing
• quantum measurements
• quantum-enhanced setup
• gravimeter
• accelerometer
• magnetometer
• thermometer
• electrometer
• single photon sources
• spin qubits
• atom sensors
• decoherence
• bioapplications