Nonequilibrium information erasure below kTln2 [article]

Michael Konopik, Alexander Friedenberger, Nikolai Kiesel, Eric Lutz
2018 arXiv   pre-print
Landauer's principle states that information erasure requires heat dissipation. Landauer's original result focused on equilibrium memories. We here investigate the reset of information stored in a nonequilibrium state of a symmetric two-state memory. We derive a nonequilibrium generalization of the erasure principle and demonstrate that the corresponding bounds on work and heat may be reduced to zero. We further introduce reset protocols that harness the initial preparation energy and entropy
more » ... d so allow to reach these nonequilibrium bounds. We finally provide numerical simulations with realistic parameters of an optically levitated nanosphere memory that support these findings. Our results indicate that local dissipation-free information reset is possible away from equilibrium.
arXiv:1806.01034v1 fatcat:azqmkltc3fcqrpotjbt5x6qaxm