The flux capacitor itself may be complex, but it's applications are clear. "In it, quantum 'tubes' of magnetic flux can move around a central capacitor by a process known as quantum tunneling, where they overcome classically insurmountable obstacles," theoretical physicist Jared Cole, one of the researchers behind the proposal, said in a news release. One does resemble the Y-shaped device used in the movies, but is much more complicated than "Back to the Future" made it seem. The researchers propose two designs for their flux capacitor. In this analogy, the cars represent the microwave signals and the land they circle is the capacitor. Credit: PINAVIA This is pretty remarkable because it breaks something called time-reversal symmetry - a theoretical law of physics that states that, if you reversed time, you’d see whatever just happened, happen exactly in reverse, like a mirror image. The device forces microwaves to flow in just one direction around a center area, just like cars in a roundabout. Ironically, while Doc and Marty didn't need roads where they were going, the best analogy for how the researchers' flux capacitor would work does involve traffic. So in a flux capacitor, microwaves are the something, and the channel they move across is a central capacitor. Flux, meanwhile, is the amount of something moving across a certain area. Capacitors are devices that store energy, and they're pretty common in the world of electronics. What the heck is this flux capacitor, anyway? Let's break it down. The Australian and Swiss physicists behind the invention published their research Monday in the journal Physical Review Letters. While the version proposed by these scientists won't let you traipse through time, it could do something almost as cool: help usher in the quantum computing era. No, it's not a real-life version of what was in the "Back to the Future" franchise (reminder: in the movies, the flux capacitor is the plutonium-powered device that makes time travel possible). Great Scott! A team of physicists just figured out how to make a flux capacitor.
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