Projekteja vuodessa
Abstrakti
We investigate theoretically a refrigerator based on a two-level system (TLS) coupled alternately to two different heat baths. Modulation of the coupling is achieved by tuning the level spacing of the TLS. We find that the TLS, which avoids quantum coherences, creates finite cooling power for one of the baths in sudden cycles, i.e., acts as a refrigerator even in the limit of infinite operation frequency. By contrast, the cycles that create quantum coherence in the sudden expansions and compressions lead to heating of both the baths. We propose a driving method that avoids creating coherence and thus restores the cooling in this system. We also discuss a physical realization of the cycle based on a superconducting qubit coupled to dissipative LC resonators.
Alkuperäiskieli | Englanti |
---|---|
Artikkeli | 085405 |
Sivut | 1-5 |
Julkaisu | Physical Review B |
Vuosikerta | 100 |
Numero | 8 |
DOI - pysyväislinkit | |
Tila | Julkaistu - 6 elok. 2019 |
OKM-julkaisutyyppi | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä |
Sormenjälki
Sukella tutkimusaiheisiin 'Supremacy of incoherent sudden cycles'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.Projektit
- 3 Päättynyt
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QuESTech: QUantum Electronics Science and TECHnology training
Pekola, J. (Vastuullinen tutkija)
01/01/2018 → 31/12/2021
Projekti: EU: Framework programmes funding
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SQH: Superconducting quantum heat engines and refrigerators
Pekola, J. (Vastuullinen tutkija)
27/09/2017 → 30/09/2023
Projekti: EU: ERC grants
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Kvanttinanoelektroniikka
Pekola, J. (Vastuullinen tutkija)
01/01/2017 → 31/12/2018
Projekti: Academy of Finland: Other research funding