Scientists Have Simulated Time Travel With Photons... quantum particle travels through a wormhole back in time and returns to the same location in space and time / Martin Ringbauer Looks like time travel is possible for particles of light. Using a photon, physicists have managed to simulate quantum particles traveling through time. Studying the photons behavior could help scientists understand some inexplicable aspects of modern physics. The question of time travel features at the interface between two of our most successful yet incompatible physical theories Einsteins general relativity and quantum mechanics, University of Queenslands Martin Ringbauer says in a news release:. Time slows down or speeds up depending on how fast you move relative to another object. Einsteins theory suggests the possibility of traveling backwards in time by following a space-time path that returns to the starting point in space but at an earlier time. This is called a closed timelike curve (pictured above). Its a traversable wormhole. In a quantum regime, the authors say, the paradox of time travel can be resolved, leaving closed timelike curves consistent with relativity. Near a black hole, for example, the extreme effects of general relativity play a role. Pictured above, a space-time structure exhibiting closed paths in space (horizontal) and time (vertical). A quantum particle travels through a wormhole back in time and returns to the same location in space and time. These include the violation of Heisenbergs uncertainty principle, cracking of quantum cryptography, and perfect cloning of quantum states. The work was published in Nature Communications this week. 