OIST Centre for Quantum Technologies (OCQT) Seminar

The OIST Center for Quantum Technologies (OCQT) is pleased to invite you to the next installment of the OCQT Seminar Series. This time, we are excited to host Dr. Diego Dalvit from Los Alamos National Laboratory (USA), who will deliver a talk entitled:
“Space-Time Classical and Quantum Metasurfaces”

Date and time

Wednesday, June 10, 2026, 14:30–16:00

14:30–15:00 — Networking with coffee and sweets
15:00–16:00 — Seminar

Location

Seminar Room L5D23 (Lab 5, Level D)

Abstract

In this talk I will introduce the concept of space-time metasurfaces – spatiotemporally modulated quasi-2D structures for full control of the electromagnetic field in space and in time. First, I will discuss space-time classical metasurfaces (STCMs) and applications for electromagnetic nonreciprocity and breakdown of Kirchhoff’s law of thermal radiation (the equality of absorptivity and emissivity of thermal radiation). Then, I will move to the quantum realm and discuss our novel concept of space-time quantum metasurfaces (STQMs) for arbitrary control of all degrees of freedom of a photon. I will show how STQMs can generate and manipulate single-photon hyperentanglement and how they can also produce Casimir light. Our work on STCMs has been published in Nat. Commun. (2020 and 2026) and the STQM concept was introduced by us in a PRL (2021).

Biography

Diego Dalvit is a Senior Staff Member at the Theoretical Division of Los Alamos National Laboratory. He is a quantum optics theorist with expertise in quantum sensing and metrology, Casimir physics, and metamaterials.

He received his Ph.D. in Physics from Universidad de Buenos Aires (Argentina) in 1998, came to LANL in 1999 as a Director Funded Postdoctoral Fellow, and was converted to staff in 2002. He is a Fellow of the American Physical Society (APS) and Optica (former Optical Society of America), and APS Outstanding Referee. He has authored more than 120 peer-reviewed papers with >10,000 citations. He has also co-authored 5 physics textbooks on Casimir physics, thermodynamics, and statistical mechanics.

He is the holder of two patents, including one submitted in 2024 in connection to his development of the groundbreaking qCOMBPASS remote quantum sensing technology. He has helped convene more than 50 talks, seminars and related activities during his career, has held membership in committees for Los Alamos activities, and has been a reviewer for funding organizations and for publications. He has helped organized seminars, workshops and schools on quantum physics subjects, also serving as mentor to postdoctoral and graduate students over nearly three decades as a scientist.

His hobby is competitive bodybuilding.