Research teams at Yokohoma University have moved quantum computing efforts closer to realizing controllable quantum systems. Microwaves have been known to cause interference in quantum gates under certain conditions, creating difficulty in quantum gate manipulation. By eliminating the microwave-induced interference, the group was able to improve control of the quantum gate in diamonds at room temperature without a magnetic field. This step is an enabler of sustained quantum memory which lends to quantum repeaters. A needed piece of hardware to developing a quantum network. 

“Nitrogen-vacancy (NV) center in diamond with two crossed wires for holonomic quantum gates over the geometric spin qubit with a polarized microwave.” (Image Credit: Yokohama National University)

This report is found at PHYS.ORG…