coaxial cable tagged posts

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

In the new quantum information technologies, fragile quantum states have to be transferred between distant quantum bits. Researchers have now realized such a quantum transmission between two solid-state qubits at the push of a button. At the ETH in Zurich, a team of physicists led by Andreas Wallraff of the Laboratory for Solid State Physics has now succeeded in transmitting quantum information, at the push of button and with high fidelity, between two quantum bits roughly a metre apart.

The main peculiarity of quantum information technologies, such as quantum computers and quantum cryptography, is the use of...