Single-photon pump by Cooper-pair splitting
| Autor: | Mantovani, Mattia, Belzig, Wolfgang, Rastelli, Gianluca, Hussein, Robert |
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| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Phys. Rev. Research 1, 033098 (2019) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevResearch.1.033098 |
| Popis: | Hybrid quantum dot-oscillator systems have become attractive platforms to inspect quantum coherence effects at the nanoscale. Here, we investigate a Cooper-pair splitter setup consisting of two quantum dots, each linearly coupled to a local resonator. The latter can be realized either by a microwave cavity or a nanomechanical resonator. Focusing on the subgap regime, we demonstrate that cross-Andreev reflection, through which Cooper pairs are split into both dots, can efficiently cool down simultaneously both resonators into their ground state. Moreover, we show that a nonlocal heat transfer between the two resonators is activated when opportune resonance conditions are matched. The proposed scheme can act as a heat-pump device with potential applications in heat control and cooling of mesoscopic quantum resonators. Comment: 9 pages (including Appendix), 3 figures; added Journal ref |
| Databáze: | arXiv |
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