Circa 2013
A standard computer is a complex group of individual parts working together as a whole — RAM, some kind of data storage, a processor, and so on. When one of those integral parts breaks, the computer is rendered useless and the part must be replaced, but what if the computer could begin routing the broken part’s tasks through the parts that are still functional? Computers can’t do that just yet, but researchers have now managed to coax a microchip into doing so.
Circa 2019
Quantum scrambling is the dispersal of local information into many-body quantum entanglements and correlations distributed throughout an entire system. This concept accompanies the dynamics of thermalization in closed quantum systems, and has recently emerged as a powerful tool for characterizing chaos in black holes1,2,3,4. However, the direct experimental measurement of quantum scrambling is difficult, owing to the exponential complexity of ergodic many-body entangled states. One way to characterize quantum scrambling is to measure an out-of-time-ordered correlation function (OTOC); however, because scrambling leads to their decay, OTOCs do not generally discriminate between quantum scrambling and ordinary decoherence. Here we implement a quantum circuit that provides a positive test for the scrambling features of a given unitary process5,6. This approach conditionally teleports a quantum state through the circuit, providing an unambiguous test for whether scrambling has occurred, while simultaneously measuring an OTOC. We engineer quantum scrambling processes through a tunable three-qubit unitary operation as part of a seven-qubit circuit on an ion trap quantum computer. Measured teleportation fidelities are typically about 80 per cent, and enable us to experimentally bound the scrambling-induced decay of the corresponding OTOC measurement.
Three scientists have won this year’s Nobel Prize in Physics for advancing our understanding of black holes, the all-consuming monsters that lurk in the darkest parts of the universe.
The FAA has given a green light to Beyond Visual Line of Sight flights while conducting bridge inspections in North Carolina. That’s great news for Skydio.
Tesla apparently has a new strategy for dealing with journalists: Don’t deal with them at all.
The electric car giant has dissolved its global public relations team, leaving the press with no formal point of contact at the world’s most valuable automaker, a new report says.
Essentially every staffer who used to work in Tesla’s PR office has either moved to a different position at the company or left altogether, according to electric vehicle industry blog Electrek, which said the move to disband the department was confirmed “at the highest level at Tesla.”
Scientists have re-investigated a sixty-year-old idea by an American physicist and provided new insights into the quantum world.
The research, which took seven years to complete, could lead to improved spectroscopic techniques, laser techniques, interferometric high-precision measurements and atomic beam applications.
Quantum physics is the study of everything around us at the atomic level, atoms, electrons and particles. Atoms and electrons which are so small, one billion placed side by side could fit within a centimeter. Because of the way atoms and electrons behave, scientists describe their behavior as like waves.
Move over, graphene and carbyne — stanene, with 100% electrical efficiency at temperatures up to 100 degrees Celsius (212F), is here, and it wants to replace the crummy, high-resistance copper wires that are a big limiting factor in current computer chips. Where graphene is a single-atom-thick layer of carbon, stanene is a single-atom-thick layer of tin.
O,.o.
AMD has patented Infinity Cache, lending credence to the rumors of its existence.
Harworth Group plc has announced the completion of the UK Atomic Energy Authority’s (UKAEA’s) new nuclear fusion technology research facility at the Advanced Manufacturing Park in Rotherham, South Yorkshire. When it opens later this year, the 2500-square-metre facility will develop and test joining technologies for fusion materials and components, including novel metals and ceramics.
Property developer Harworth said completion of the GBP22 million (USD28 million) Fusion Technology facility triggers UKAEA’s 20-year lease with Harworth at a rent in line with other manufacturers at the Advanced Manufacturing Park. UKAEA will now prepare the building prior to taking formal occupation of it later this year.
The new facility is being funded as part of the government’s Nuclear Sector Deal delivered through the Department for Business, Energy and Industrial Strategy. An additional GBP2 million of investment came from Sheffield City Region’s Local Growth Fund.
