Phys.org  April 6, 2022 A team of researchers in the US (Princeton University, Sandia National Laboratory) used a two qubits silicon device and forced them to interact. The spin state of each electron can be used as a qubit and the interaction between the electrons can entangle these qubits. To do this they constructed a cage in the form of a wafer-thin semiconductor made primarily out of silicon. At the top of the cage they patterned little electrodes, which create the electrostatic potential used to corral the electron. Two of these cages put together, separated by a barrier, or gate, […]