Computing With Time Travel (IMAGE)

Centre for Quantum Technologies at the National University of Singapore

Computing With Time Travel

Caption

If the universe allows 'open timelike curves', particles travelling back in time along them could help to perform currently intractable computations. Even though such curves don't allow for interaction with anything in the past, researchers writing in npj Quantum Information show there is a gain in computational power as long as the time-travelling particle is entangled with one kept in the present.

Credit

Adapted from npj Quantum Information, doi:10.1038/npjqi.2015.7 (2015)

Usage Restrictions

To be used only in reporting on the paper Xiao Yuan et al, "Replicating the benefits of Deutschian closed timelike curves without breaking causality" npj Quantum Information, doi:10.1038/npjqi.2015.7 (2015)

License

Licensed content

Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.