Time Reversal Procedure (IMAGE) DOE/Argonne National Laboratory Caption Image shows a time reversal procedure for a spreading wave packet that represents a quantum particle. The reversed state freely evolves into the original squeezed state, which is recovered with some precision -- in this case, 85 percent. (Image by Argonne National Laboratory. Credit Argonne National Laboratory Usage Restrictions None 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.