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10.1038/srep10070 http://scihub22266oqcxt.onion/10.1038/srep10070 C4437316!4437316!25988238     free     free     free Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534       Sci+Rep 2015 ; 5 (ä): ä Nephropedia Template TP {{tp|p=25988238|t=2015. Motion and gravity effects in the precision of quantum clocks |pdf=|usr=}}{{25988238}} gab.com Text Motion and gravity effects in the precision of quantum clocks JO: Sci Rep http://www.kidney.de/pget.php?&tw=1&pmid=25988238 #FOAvip We show that motion and gravity affect the precision of quantum clocks. We consider a localised quantum field as a fundamental model of a quantum clock moving in spacetime and show that its state is modified due to changes in acceleration. By computing the quantum Fisher information we determine how relativistic motion modifies the ultimate bound in the precision of the measurement of time. While in the absence of motion the squeezed vacuum is the ideal state for time estimation, we find that it is highly sensitive to the motion-induced degradation of the quantum Fisher information. We show that coherent states are generally more resilient to this degradation and that in the case of very low initial number of photons, the optimal precision can be even increased by motion. These results can be tested with current technology by using superconducting resonators with tunable boundary conditions. Twit Text FOAVip Motion and gravity effects in the precision of quantum clocks ????Sci Rep http://www.kidney.de/pget.php?&tw=1&pmid=25988238 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=25988238 #FOAvip English Wikipedia <ref>{{Cite pmid|25988238}}</ref> Motion and gravity effects in the precision of quantum clocks #MMPMID25988238 Lindkvist J; Sabín C; Johansson G; Fuentes I Sci Rep 2015[]; 5 (ä): ä PMID25988238show ga We show that motion and gravity affect the precision of quantum clocks. We consider a localised quantum field as a fundamental model of a quantum clock moving in spacetime and show that its state is modified due to changes in acceleration. By computing the quantum Fisher information we determine how relativistic motion modifies the ultimate bound in the precision of the measurement of time. While in the absence of motion the squeezed vacuum is the ideal state for time estimation, we find that it is highly sensitive to the motion-induced degradation of the quantum Fisher information. We show that coherent states are generally more resilient to this degradation and that in the case of very low initial number of photons, the optimal precision can be even increased by motion. These results can be tested with current technology by using superconducting resonators with tunable boundary conditions. äMotion and gravity effects in the precision of quantum clocks (epmc).pdf DeepDyve Pubget Overpricing