Abstract
Quantum thermodynamics is emerging both as a topic of fundamental research and as a means to understand and potentially improve the performance of quantum devices 1–10 . A prominent platform for achieving the necessary manipulation of quantum states is superconducting circuit quantum electrodynamics (QED) 11 . In this platform, thermalization of a quantum system 12–15 can be achieved by interfacing the circuit QED subsystem with a thermal reservoir of appropriate Hilbert dimensionality. Here we study heat transport through an assembly consisting of a superconducting qubit 16 capacitively coupled between two nominally identical coplanar waveguide resonators, each equipped with a heat reservoir in the form of a normal-metal mesoscopic resistor termination. We report the observation of tunable photonic heat transport through the resonator–qubit–resonator assembly, showing that the reservoir-to-reservoir heat flux depends on the interplay between the qubit–resonator and the resonator–reservoir couplings, yielding qualitatively dissimilar results in different coupling regimes. Our quantum heat valve is relevant for the realization of quantum heat engines 17 and refrigerators, which can be obtained, for example, by exploiting the time-domain dynamics and coherence of driven superconducting qubits 18,19 . This effort would ultimately bridge the gap between the fields of quantum information and thermodynamics of mesoscopic systems.
| Original language | English |
|---|---|
| Pages (from-to) | 991-995 |
| Number of pages | 5 |
| Journal | Nature Physics |
| Volume | 14 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 1 Oct 2018 |
| MoE publication type | A1 Journal article-refereed |
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Tunable photonic heat transport in a quantum heat valve. / Ronzani, Alberto (Corresponding Author); Karimi, Bayan; Senior, Jorden; Chang, Yu Cheng; Peltonen, Joonas T.; Chen, Chii Dong; Pekola, Jukka P.
In: Nature Physics, Vol. 14, No. 10, 01.10.2018, p. 991-995.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Tunable photonic heat transport in a quantum heat valve
AU - Ronzani, Alberto
AU - Karimi, Bayan
AU - Senior, Jorden
AU - Chang, Yu Cheng
AU - Peltonen, Joonas T.
AU - Chen, Chii Dong
AU - Pekola, Jukka P.
PY - 2018/10/1
Y1 - 2018/10/1
N2 - Quantum thermodynamics is emerging both as a topic of fundamental research and as a means to understand and potentially improve the performance of quantum devices 1–10 . A prominent platform for achieving the necessary manipulation of quantum states is superconducting circuit quantum electrodynamics (QED) 11 . In this platform, thermalization of a quantum system 12–15 can be achieved by interfacing the circuit QED subsystem with a thermal reservoir of appropriate Hilbert dimensionality. Here we study heat transport through an assembly consisting of a superconducting qubit 16 capacitively coupled between two nominally identical coplanar waveguide resonators, each equipped with a heat reservoir in the form of a normal-metal mesoscopic resistor termination. We report the observation of tunable photonic heat transport through the resonator–qubit–resonator assembly, showing that the reservoir-to-reservoir heat flux depends on the interplay between the qubit–resonator and the resonator–reservoir couplings, yielding qualitatively dissimilar results in different coupling regimes. Our quantum heat valve is relevant for the realization of quantum heat engines 17 and refrigerators, which can be obtained, for example, by exploiting the time-domain dynamics and coherence of driven superconducting qubits 18,19 . This effort would ultimately bridge the gap between the fields of quantum information and thermodynamics of mesoscopic systems.
AB - Quantum thermodynamics is emerging both as a topic of fundamental research and as a means to understand and potentially improve the performance of quantum devices 1–10 . A prominent platform for achieving the necessary manipulation of quantum states is superconducting circuit quantum electrodynamics (QED) 11 . In this platform, thermalization of a quantum system 12–15 can be achieved by interfacing the circuit QED subsystem with a thermal reservoir of appropriate Hilbert dimensionality. Here we study heat transport through an assembly consisting of a superconducting qubit 16 capacitively coupled between two nominally identical coplanar waveguide resonators, each equipped with a heat reservoir in the form of a normal-metal mesoscopic resistor termination. We report the observation of tunable photonic heat transport through the resonator–qubit–resonator assembly, showing that the reservoir-to-reservoir heat flux depends on the interplay between the qubit–resonator and the resonator–reservoir couplings, yielding qualitatively dissimilar results in different coupling regimes. Our quantum heat valve is relevant for the realization of quantum heat engines 17 and refrigerators, which can be obtained, for example, by exploiting the time-domain dynamics and coherence of driven superconducting qubits 18,19 . This effort would ultimately bridge the gap between the fields of quantum information and thermodynamics of mesoscopic systems.
UR - http://www.scopus.com/inward/record.url?scp=85049654705&partnerID=8YFLogxK
U2 - 10.1038/s41567-018-0199-4
DO - 10.1038/s41567-018-0199-4
M3 - Article
VL - 14
SP - 991
EP - 995
JO - Nature Physics
JF - Nature Physics
SN - 1745-2473
IS - 10
ER -