Superconducting circuits rely on an electronic component known as the Josephson junction, allowing them to manipulate quantum information and communicate with photons. Using a stimulated Josephson non-linearity, a team of researchers at Princeton University, Northwestern University, and the University of Chicago directly operated an oscillator. By operating it as an isolated two-level system, the team achieved quantum control of an oscillator by modifying its Hilbert space. The researchers believe that the new approach for controlling oscillators will allow the production of substantially more energy-efficient electronic components than most of the chips used today.
Reference Link:https://phys.org/news/2019-12-quantum-oscillator-josephson-circuit.html
