Freiburg 2024 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 35: Poster VIII
A 35.5: Poster
Donnerstag, 14. März 2024, 17:00–19:00, Tent C
Proposal for a series of experiments on autonomous running and starting of an ion trap micro engine — •Diego Fieguth1,2, Peter Stabel1,2, and James Anglin1,2 — 1RPTU Kaiserslautern — 2Landesforschungszentrum OPTIMAS
A minimal realization of a combustion engine, in the sense of a system that enables secular energy transfer across a large difference in dynamical time scales, can be achieved with only two or three degrees of freedom evolving as a closed dynamical system. We propose implementing a minimal engine model using only the three-dimensional motion of a single trapped ion. The transverse vibrational modes of the ion in the trap will be analogous to fuel or heat baths, to power work in the form of axial motion against an opposing force. We propose a step-by-step sequence of trapped ion experiments that involve launching the ion with some initial velocity in the axial direction. In all cases, the microscopic engine runs autonomously, in the sense that it evolves under a time-independent Hamiltonian with no external power and no external control. In addition, the proposed experiments demonstrate the non-trivial constraints which must be obeyed if the microscopic engine is to be able not only to run autonomously, but also to start autonomously. We explain how these constraints arise from unitarity, through the Kruskal-Neishtadt-Henrard (KNH) theorem of classical adiabatic theory and its recently proven quantum analog.
Keywords: non-linear dynamcis; Hamiltonian analogs of combustion engines; post-adiabatic theory; microscopic autonomous machines