Welcome to the de Leon Group

The de Leon lab is focused on building quantum devices with color centers in wide bandgap materials. These color centers act as artificial atoms in the solid state, and can have remarkable optical and spin properties. We study nanophotonics, device physics, quantum optics, spectroscopy, and materials science in diamond with the technological goals of realizing quantum networks and nanoscale sensors. We are also interested in exploring fundamental quantum optics, magnetism and interactions between spins, and new material systems for quantum technologies. Our group is highly interdisciplinary, and our work spans optics and photonics, surface science and materials spectroscopy, atomic physics techniques, nanofabrication, optoelectronics, and cryogenics. We are fortunate to have collaborators around the world that are experts in diamond synthesis, processing, and characterization, surface spectroscopy, EPR, STM, and DFT calculations of defects in wide bandgap materials.

We collaborate broadly, and benefit from a large research community focused on quantum science and engineering at Princeton:


Recent news

March 23, 2021

Trisha was selected for an NSF GRFP Fellowship! Congratulations!

March 19, 2021

In collaboration with Andrew Houck and Bob Cava, we have demonstrated a new superconducting transmon qubit with coherence times in excess of 0.3 ms!

March 15, 2021

Our paper detailing a proposal for hybrid III-V diamond photonics for neutral SiV quantum nodes was published in Optics Express

November 30, 2020

Our paper reporting optically detected magnetic resonance in the neutral silicon vacancy center was published in Physical Review Letters

August 26, 2020

We are excited to launch the Co-Design Center for Quantum Advantage (C2QA), a Department of Energy QIS research center! Princeton University plays a major leadership role in C2QA, and Nathalie will be leading the Materials Thrust.

News, DOE announcement
C2QA site

August 18, 2020

Our paper on charge state dynamics and optically detected electron spin resonance contrast of shallow nitrogen-vacancy centers in diamond was published in Physical Review Research

August 1, 2020

Welcome to Aveek Dutta and Jared Rovny, new postdocs joining this summer. Congratulations also to Jared, who will be one if the inaugural PQI fellows!

October 1, 2019

Mattias Fitzpatrick was awarded an Intelligence Community Postdoctoral Research Fellowship. Congratulations, Mattias!

September 26, 2019

Our paper on engineering highly coherent shallow NV centers was published in PRX

May 22, 2019

Ding Huang earned the 2nd place Award for Best Student Poster at the Latsis Diamond Photonics Symposium at EPFL for his poster, "Nanophotonics for telecom quantum networks based on neutral silicon vacancy centers in diamond"

June 4, 2018

Zihuai Zhang earned the Princeton Electrical Engineering Early Career Award

April 12, 2018

Lila Rodgers received both the NSFGRFP and NDSEG fellowships. Congratulations, Lila!

March 17, 2017

JJ Allred was selected for an NSFGRFP fellowship. Congratulations, JJ!