Impact of Chiral-Transitions in Quantum Friction

• URL: http://arxiv.org/abs/2306.00151v1
• Date: Wed, 31 May 2023 19:48:04 GMT
• Title: Impact of Chiral-Transitions in Quantum Friction
• Authors: Muzzamal I. Shaukat and Mario G. Silveirinha
• Abstract summary: We investigate the role of chiral-transitions in the quantum friction force that acts on a two-level atom. We find that the friction force has a component that is sensitive to the handedness of the atomic transition dipole moment.
• Score: 0.0
• License: http://creativecommons.org/publicdomain/zero/1.0/
• Abstract: We theoretically investigate the role of chiral-transitions in the quantum friction force that acts on a two-level atom that moves with relative velocity v parallel to a planar metallic surface. We find that the friction force has a component that is sensitive to the handedness of the atomic transition dipole moment. In the particular, we show that the friction force due to a particular atomic transition can be enhanced by a dipole moment with a certain handedness, and almost suppressed by the dipole moment with the opposite handedness. Curiously, the handedness of the transition dipole moment that boosts the ground-state friction force is the opposite of what is classically expected from the spin-momentum locking. We explain this discrepancy in terms of the interaction between positive and negative frequency oscillators.

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