Scientists have for some years been able to ‘teleport’ quantum states from one place to another. Now Seth Lloyd and his MIT team say that, using the same principles and a further strange quantum effect known as ‘postselection’, it should be possible to do the same backwards in time. Lloyd told the Technology Review: “It is possible for particles (and, in principle, people) to tunnel from the future to the past.”
And that brings up a few points (and — don’t forget/as always — I’m nothing more than an enthusiastic amateur with this):
1. Can we make quantum mechanics nonlinear?
2. How does postselection get around the idea of twisting space and time?
3. The website on which the original paper appeared is not peer-reviewed. (Sadly.)
via: Telegraph / Technology Review / Slashdot.
