Emerging Quantum Systems

Defects in Quantum Diamond

Solid-state quantum material systems have the potential to disrupt the areas of quantum sensing, computing, and communication while operating at room temperature. In particular, quantum color centers based on nitrogen-vacancy (NV) defects are one of the most developed platforms and exhibit one of the longest relaxation times of any solid-state system under ambient conditions. In order to realize the potential of solid-state materials in quantum technology and beyond, significant progress must be made in the scalable growth, chemical design, and photophysical understanding of defects in various materials. Therefore, I am developing new methods to synthesize, grow, and characterize a prototypical defect system, NV centers in quantum diamond. Specifically, I have been chemically designing diamond to achieve new benchmarks in NV coherence times and quantum magnetometer sensitivity. (Photo Courtesy: MIT-LL)


Exciton-polaritons are a hybrid state of light and matter and are one of the most promising routes to realize quantum optoelectronic devices at room temperature. In particular, they are a quantum playground for exploring Bose-Einstein condensation, superfluidity, quantum vortices, and quantum entanglement. Polaritons emerge from the strong interactions of electronic transitions with confined electromagnetic fields and offer entirely new directions in chemistry including the ability to perform remote chemistry, inhibit or accelerate reaction kinetics, and modify electronic structure and energy transfer rates.

Currently, I am pursuing the unique properties of exciton-polaritons through a materials chemistry perspective. Specifically, how can the matter component (exciton) of this hybrid quasiparticle be tuned to enable polaritons with controllable lifetimes, propagation lengths, interaction strengths, and condensation thresholds. I believe that fine control of excitons will result in several key advancements in conducting new types of reactions using polariton chemistry; entirely different platforms for efficient lighting, sensing, and energy conversion; and unparalleled performance for a host of room-temperature quantum optoelectronic devices including moveable quantum sensors and single photon quantum emitters.

Related Publications:

 §Corresponding Authors: Laitz, M.; Kaplan, A.E.K.; Deschamps, J.; Barotov, U.; Proppe, A.H.; García-Benito, I.; Osherov, A.; Grancini, G.; deQuilettes, D.W.§; Nelson, K.; Bawendi, M.; Bulović, V.§ “Uncovering Temperature-Dependent Exciton-Polariton Relaxation Mechanisms in Perovskites.”, 2022, submitted. https://arxiv.org/abs/2203.13816