Research

Solid state quantum computer

The control of single atoms and its interactions in solid matter offers a variety of applications in quantum information processing.

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Thermodynamics in linear Paul traps

Single Ion Heat Engine

While thermodynamic systems are generally treated by averaging over many body systems, we scale such a system down to the ultimate limit of a single quantum particle. We analyze an experimental scheme for a nano-heat engine using a single ion as working gas. An Otto cycle may be implemented by confining the ion in a linear Paul trap with tapered geometry and coupling it to engineered reservoirs. Are the classical thermodynamic laws, based on the dynamics of large ensembles, still valid for a single particle? Do they have to be modified when employing quantum reservoirs?

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