Heat-to-motion conversion for quantum active matter

• URL: http://arxiv.org/abs/2503.07751v1
• Date: Mon, 10 Mar 2025 18:08:05 GMT
• Title: Heat-to-motion conversion for quantum active matter
• Authors: Alexander-Georg Penner, Ludmila Viotti, Rosario Fazio, Liliana Arrachea, Felix von Oppen,
• Abstract summary: We introduce a model of an active quantum particle and discuss its properties.<n>The quantum features of the active particle manifest both in the motion and in the heat-to-motion conversion.<n>The combination of spin-orbit interaction under nonequilibrium driving may bring active matter into the realm of cold atomic gases.
• Score: 39.58317527488534
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We introduce a model of an active quantum particle and discuss its properties. The particle has a set of internal states that mediate exchanges of heat with external reservoirs. Heat is then converted into motion by means of a spin-orbit term that couples internal and translational degrees of freedom. The quantum features of the active particle manifest both in the motion and in the heat-to-motion conversion. Furthermore, the stochastic nature of heat exchanges impacts the motion of the active particle and fluctuations can be orders of magnitude larger than the average values. The combination of spin-orbit interaction under nonequilibrium driving may bring active matter into the realm of cold atomic gases where our proposal can be implemented.

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