Phys.org February 24, 2022
A team of researchers in the US (MIT, Columbia University, University of Chicago, Northwestern University) focused on a group of molecules with a central chromium atom surrounded by four hydrocarbon molecules to demonstrate how a particular molecular family of qubits can be finely tuned over a broad spectrum. They used synthetic chemistry to modify the physics of the qubits. Using the ligand field strength, they demonstrated remarkable fine tuning and showed that the ligand field strengths are adjustable over a relatively broad spectrum, and that it also controls the molecule’s electronic properties. The light emitted by the chromium qubits spanned 100 nanometers. Approaching the molecule’s design by focusing on its electronic structure rather than its physical structure was key to the team’s discovery. The work lays out the groundwork for creating new tunable molecular qubits that can be designed for various applications. Custom-designed qubits can be used for quantum sensing and biological systems, biosensing…read more. TECHNICAL ARTICLEÂ
Graphical abstract. Credit: J. Am. Chem. Soc. 2021, 143, 50, 21350–21363, November 24, 2021Â