Zobrazeno 1 - 10
of 405
pro vyhledávání: '"Jukka P Pekola"'
Autor:
Jukka P. Pekola, Bayan Karimi
Publikováno v:
Physical Review Research, Vol 6, Iss 4, p L042023 (2024)
We discuss thermalization in a multimode quantum cavity under unitary evolution. According to general principles, an isolated system with quadratic couplings does not exhibit thermalization. However, we find that nonlinearities, here three-wave pertu
Externí odkaz:
https://doaj.org/article/f14e10f49fd94c49861f81cf9d703ff4
Autor:
Rishabh Upadhyay, Dmitry S. Golubev, Yu-Cheng Chang, George Thomas, Andrew Guthrie, Joonas T. Peltonen, Jukka P. Pekola
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-9 (2024)
Abstract The fragile nature of quantum circuits is a major bottleneck to scalable quantum applications. Operating at cryogenic temperatures, quantum circuits are highly vulnerable to amplifier backaction and external noise. Non-reciprocal microwave d
Externí odkaz:
https://doaj.org/article/3f9182f2a6c4486d8e252d9b576ea77c
Autor:
Diego Subero, Olivier Maillet, Dmitry S. Golubev, George Thomas, Joonas T. Peltonen, Bayan Karimi, Marco Marín-Suárez, Alfredo Levy Yeyati, Rafael Sánchez, Sunghun Park, Jukka P. Pekola
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-8 (2023)
Abstract The Josephson junction is a building block of quantum circuits. Its behavior, well understood when treated as an isolated entity, is strongly affected by coupling to an electromagnetic environment. In 1983, Schmid predicted that a Josephson
Externí odkaz:
https://doaj.org/article/24959b50408745c0a2d9d18bc2aa3e36
Autor:
Jukka P. Pekola, Bayan Karimi
Publikováno v:
Entropy, Vol 26, Iss 5, p 429 (2024)
We discuss the concept and realization of a heat bath in solid state quantum systems. We demonstrate that, unlike a true resistor, a finite one-dimensional Josephson junction array or analogously a transmission line with non-vanishing frequency spaci
Externí odkaz:
https://doaj.org/article/550692e4f78149e4904b2b05051f7191
Autor:
George Thomas, Jukka P. Pekola
Publikováno v:
Physical Review Research, Vol 5, Iss 2, p L022036 (2023)
We demonstrate a genuine quantum feature of heat: the power emitted by a qubit (quantum two-level system) into a reservoir under continuous driving shows peaks as a function of frequency f. These resonant features appear due to the accumulation of th
Externí odkaz:
https://doaj.org/article/02e38610284e430c85ecb6409961e41e
Autor:
Azat Gubaydullin, George Thomas, Dmitry S. Golubev, Dmitrii Lvov, Joonas T. Peltonen, Jukka P. Pekola
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-10 (2022)
Quantum heat transport devices are currently intensively studied. Here, the authors report the photonic heat transport modulated by superconducting qubit in a three-terminal device. Flux dependent heat power correlates with microwave measurements.
Externí odkaz:
https://doaj.org/article/b29d81374d3a42c39738a5ab7d3a7063
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-6 (2020)
Quantum heat transport may be realized in superconducting circuits which has to rely on magnetic flux as a sole control parameter. Here, the authors report electric field tuning of photonic thermal conductance and observe heat flow oscillations in a
Externí odkaz:
https://doaj.org/article/2d484ef693bc4a5f90ebeff3f99382ea
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-6 (2020)
Quantum calorimeters can provide time-resolved measurement of single photons by converting them to detectable temperature changes. Here the authors demonstrate a calorimeter that reaches the lower bound of temperature resolution, determined by the co
Externí odkaz:
https://doaj.org/article/3564d825d3904226823b9fa84c803547
Publikováno v:
Journal of Physics Communications, Vol 7, Iss 1, p 015005 (2023)
The study of quantum heat transport in superconducting circuits is significant for further understanding the connection between quantum mechanics and thermodynamics, and for possible applications for quantum information. The first experimental realis
Externí odkaz:
https://doaj.org/article/e16a08e6509d4a77ba2c94e0163e5886
Autor:
Jukka P. Pekola, Bayan Karimi
Publikováno v:
Physical Review X, Vol 12, Iss 1, p 011026 (2022)
We describe a qubit linearly coupled to a heat bath, either directly or via a cavity. The main focus of the paper is on calorimetric detection in a realistic circuit, specifically a solid-state qubit coupled to a resistor as an absorber. The bath in
Externí odkaz:
https://doaj.org/article/72a4c2e9672048c0b86560d701ac46a5