Today's quantum computers contain up to several dozen memory and processing units, the so-called qubits. Severin Daiss, Stefan Langenfeld, and colleagues from the Max Planck Institute of Quantum Optics in Garching have successfully interconnected two such qubits located in different labs to a distributed quantum computer by linking the qubits with a 60-meter-long optical fiber. Over such a distance they realized a quantum-logic gate—the basic building block of a quantum computer. It makes the system the worldwide first prototype of a distributed quantum computer.
source https://phys.org/news/2021-02-quantum-joint.html
