Quantum refrigeration powered by noise in a superconducting circuit
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866916007340146688 |
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| author | Sundelin, Simon Aamir, Mohammed Ali Kulkarni, Vyom Manish Castillo-Moreno, Claudia Gasparinetti, Simone |
| author_facet | Sundelin, Simon Aamir, Mohammed Ali Kulkarni, Vyom Manish Castillo-Moreno, Claudia Gasparinetti, Simone |
| contents | While dephasing noise frequently presents obstacles for quantum devices, it can become an asset in the context of a Brownian-type quantum refrigerator. Here we demonstrate a novel quantum thermal machine that leverages noise-assisted quantum transport to fuel a cooling engine in steady state. The device exploits symmetry-selective couplings between a superconducting artificial molecule and two microwave waveguides. These waveguides act as thermal reservoirs of different temperatures, which we regulate by employing synthesized thermal fields. We inject dephasing noise through a third channel that is longitudinally coupled to an artificial atom of the molecule. By varying the relative temperatures of the reservoirs, and measuring heat currents with a resolution below 1 aW, we demonstrate that the device can be operated as a quantum heat engine, thermal accelerator, and refrigerator. Our findings open new avenues for investigating quantum thermodynamics using superconducting quantum machines coupled to thermal microwave waveguides. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_03373 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Quantum refrigeration powered by noise in a superconducting circuit Sundelin, Simon Aamir, Mohammed Ali Kulkarni, Vyom Manish Castillo-Moreno, Claudia Gasparinetti, Simone Quantum Physics While dephasing noise frequently presents obstacles for quantum devices, it can become an asset in the context of a Brownian-type quantum refrigerator. Here we demonstrate a novel quantum thermal machine that leverages noise-assisted quantum transport to fuel a cooling engine in steady state. The device exploits symmetry-selective couplings between a superconducting artificial molecule and two microwave waveguides. These waveguides act as thermal reservoirs of different temperatures, which we regulate by employing synthesized thermal fields. We inject dephasing noise through a third channel that is longitudinally coupled to an artificial atom of the molecule. By varying the relative temperatures of the reservoirs, and measuring heat currents with a resolution below 1 aW, we demonstrate that the device can be operated as a quantum heat engine, thermal accelerator, and refrigerator. Our findings open new avenues for investigating quantum thermodynamics using superconducting quantum machines coupled to thermal microwave waveguides. |
| title | Quantum refrigeration powered by noise in a superconducting circuit |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2403.03373 |