Projekteja vuodessa
Abstrakti
We report an experimental realization of a three-terminal photonic heat transport device based on a superconducting quantum circuit. The central element of the device is a flux qubit made of a superconducting loop containing three Josephson junctions, which can be tuned by magnetic flux. It is connected to three resonators terminated by resistors. By heating one of the resistors and monitoring the temperatures of the other two, we determine photonic heat currents in the system and demonstrate their tunability by magnetic field at the level of 1 aW. We determine system parameters by performing microwave transmission measurements on a separate nominally identical sample and, in this way, demonstrate clear correlation between the level splitting of the qubit and the heat currents flowing through it. Our experiment is an important step towards realization of heat transistors, heat amplifiers, masers pumped by heat and other quantum heat transport devices.
Alkuperäiskieli | Englanti |
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Artikkeli | 1552 |
Sivut | 1-10 |
Sivumäärä | 10 |
Julkaisu | Nature Communications |
Vuosikerta | 13 |
Numero | 1 |
DOI - pysyväislinkit | |
Tila | Julkaistu - 23 maalisk. 2022 |
OKM-julkaisutyyppi | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä |
Sormenjälki
Sukella tutkimusaiheisiin 'Photonic heat transport in three terminal superconducting circuit'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.Projektit
- 3 Päättynyt
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XmonMASER: Josephson maser and heat transport in dissipative open quantum systems
Gubaydullin, A. (Vastuullinen tutkija)
01/05/2019 → 30/04/2021
Projekti: EU: MC
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QTF: Kvanttiteknologian huippuyksikkö
Pekola, J. (Vastuullinen tutkija)
01/01/2018 → 31/12/2020
Projekti: Academy of Finland: Other research 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
Laitteet
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OtaNano – Kylmälaboratorio
Savin, A. (Manager) & Rissanen, A. (Other)
OtaNanoLaitteistot/tilat: Facility