System Bits: Oct. 21


Simplified superconducting circuits Computer chips with superconducting circuits, which means they have no electrical resistance, are said to be 50 to 100 times as energy-efficient as today’s technology. Superconducting chips are also said to have greater processing power: Superconducting circuits that use so-called Josephson junctions have been clocked at 770 gigahertz, or 500 times the spe... » read more

More To Quantum Computing Than Qubits


A couple of weeks ago, I posted an article about qubits based on the nitrogen-vacancy (N-V) center in diamond. I’m working on one about qubits based on superconducting loops with Josephson junctions. But it’s important to remember that the qubit technology alone tells only part of the story of a quantum computer. Quantum computers, like conventional computers, need ways to store data and wa... » read more