Impact of Chiral-Transitions in Quantum Friction
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arXiv
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| Auteurs principaux: | , |
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| Format: | Preprint |
| Publié: |
2023
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| _version_ | 1866913660264251392 |
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| author | Shaukat, Muzzamal I. Silveirinha, Mario G. |
| author_facet | Shaukat, Muzzamal I. Silveirinha, Mario G. |
| contents | 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 can be enhanced by an atomic transition with 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2306_00151 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Impact of Chiral-Transitions in Quantum Friction Shaukat, Muzzamal I. Silveirinha, Mario G. Quantum Physics 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 can be enhanced by an atomic transition with 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. |
| title | Impact of Chiral-Transitions in Quantum Friction |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2306.00151 |