Ultrathin materials may pave the way for personal-sized quantum devices

https://phys.org/news/2022-01-ultrathin-materials-pave-personal-sized-quantum.html

"The resulting qubit is about 100 times smaller than what they made with traditional techniques on the same chip. The coherence time, or lifetime, of the qubit is only a few microseconds shorter with their new design. And capacitors built with hexagonal boron nitride contain more than 90 percent of the electric field between the upper and lower plates, which suggests they will significantly suppress cross-talk among neighboring qubits"