Phys.org March 5, 2020
Currently there are computers with a few dozen qubits, but several hundreds of thousands of them are almost impossible to accommodate in existing devices as they need to be cooled down to temperatures close to the absolute zero of -273,15 degrees Celsius. To connect two superconducting quantum chips to exchange superposition states between them with minimal decoherence researchers in Germany cooled the chips to a few hundredths of a degree above absolute zero and demonstrated that the quantum link can be sufficiently cooled down to reliably transmit quantum information between two quantum chips. They will report their results at a virtual substitute conference…read more.