Physicists at the Swiss Federal Institute of Technology in Zurich, Switzerland, have successfully transferred two qubits via coaxial cable. Using a microwave photon resonator to transmit the qubit state, the quantum state was successfully transmitted to a second qubit through the cable; a distance of about 2 meters. With a transmission success rate of 80 percent, the process was repeatable upwards of 50,000 times per second. The team’s next goal is to enable entanglement swapping – using qubits to transmit and receive. If successful, the technique could open up avenues for larger quantum computers. 

“For the first time, the quantum state of a superconducting qubit was transferred with a coaxial cable to another qubit.” (Image Credit: ETH Zurich/M. Pechal, T. Walter, P. Kurpiers)

This report is found at ETH Zurich…