Stability in asymmetry: Scientists extend qubit lifetimes

Science Daily  October 13, 2022 An international team of researcher (US – University of Chicago, MIT, Northwestern University, Argonne National Laboratory, UK) demonstrated how the spin coherence in optically addressable molecular qubits can be controlled through engineering their host environment. By inserting chromium (IV)-based molecular qubits into a nonisostructural host matrix, they generated noise-insensitive clock transitions, through a transverse zero-field splitting, that are not present when using an isostructural host. This led to spin-coherence times of more than 10μs for optically addressable molecular spin qubits in a nuclear and electron-spin-rich environment. they modeled the dependence of spin coherence on transverse […]