Optical Pumping of Bardeen-Cooper-Schrieffer Superconductors
Fuente:
arXiv
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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866916588410634240 |
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| author | Sulaiman, Vanessa Uhrig, Götz S. |
| author_facet | Sulaiman, Vanessa Uhrig, Götz S. |
| contents | Motivated by the generation by optical pulses of non-thermal distributions of nuclear spins in quantum dots we investigate the effect of optical pulses applied to Bardeen-Cooper-Schrieffer (BCS) superconductors. Using time-dependent mean-field theory formulated with Anderson pseudospins, we study the electronic configurations and the energy deposited in the system by optical pulses. The pulses are included by Peierls substitution and we study short rectangular pulses as well as idealized $δ$ pulses. Already a few and even a single pulse generates highly non-trivial distributions of electron expectation values which we simulate numerically and explain analytically based on the linearization of the equations of motion. These results suggest so far unexplored experimental possibilities for the optical control of superconducting states. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_16350 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Optical Pumping of Bardeen-Cooper-Schrieffer Superconductors Sulaiman, Vanessa Uhrig, Götz S. Superconductivity Strongly Correlated Electrons Motivated by the generation by optical pulses of non-thermal distributions of nuclear spins in quantum dots we investigate the effect of optical pulses applied to Bardeen-Cooper-Schrieffer (BCS) superconductors. Using time-dependent mean-field theory formulated with Anderson pseudospins, we study the electronic configurations and the energy deposited in the system by optical pulses. The pulses are included by Peierls substitution and we study short rectangular pulses as well as idealized $δ$ pulses. Already a few and even a single pulse generates highly non-trivial distributions of electron expectation values which we simulate numerically and explain analytically based on the linearization of the equations of motion. These results suggest so far unexplored experimental possibilities for the optical control of superconducting states. |
| title | Optical Pumping of Bardeen-Cooper-Schrieffer Superconductors |
| topic | Superconductivity Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2407.16350 |