Making light work of computing

The Rice Engineering Magazine features our work on 2D materials for single photon emission

The Fall 2019 issue of the Rice Engineering Magazine [1] features our recent work on 2D materials for single photon emission (SPE).

Single photon emission by a solid-state source requires presence of a distinct two-level quantum system, usually provided by point defects. In a recent Nano Lett., we note that a number of qualities offered by novel, two-dimensional materials, their all-surface openness and optical transparence, tighter quantum confinement, and reduced charge screening—are advantageous for achieving an ideal SPE. On the basis of first-principles calculations and point-group symmetry analysis, we have proposed a strategy  to design paramagnetic defect complex with reduced symmetry, meeting all the requirements for SPE: its electronic states are well isolated from the host material bands, belong to a majority spin eigenstate, and can be controllably excited by polarized light. The defect complex is thermodynamically stable and appears feasible for experimental realization to serve as an SPE-source, essential for quantum computing, with ReMoVS in MoS2 as one of the most practical candidates.

[1] M. Williams, “Making light work of computing”, Rice Eng. Mag. (Fall 2019), 34-35 (2019)

– See more at Rice News