MENLO PARK, California, Sept. 15 -- The SLAC National Accelerator Laboratory issued the following news release: * * * Quantum sensing: Four bars on Mars * By Ali Sundermier Quantum sensing uses quantum phenomena to detect extremely subtle signals or changes that are beyond the reach of many traditional sensors. At the Department of Energy's SLAC National Accelerator Laboratory, researchers use superconducting qubits and other quantum sensors to measure these signals with extraordinary sens  more