Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Patrick P. Hofer"'
Autor:
Patrick P. Hofer
Publikováno v:
Quantum, Vol 1, p 32 (2017)
We develop a general framework to investigate fluctuations of non-commuting observables. To this end, we consider the Keldysh quasi-probability distribution (KQPD). This distribution provides a measurement-independent description of the observables o
Externí odkaz:
https://doaj.org/article/f16af4126ab04c09b86b54f5fb86daa8
Autor:
Patrick P Hofer, Martí Perarnau-Llobet, L David M Miranda, Géraldine Haack, Ralph Silva, Jonatan Bohr Brask, Nicolas Brunner
Publikováno v:
New Journal of Physics, Vol 19, Iss 12, p 123037 (2017)
The study of quantum thermal machines, and more generally of open quantum systems, often relies on master equations. Two approaches are mainly followed. On the one hand, there is the widely used, but often criticized, local approach, where machine su
Externí odkaz:
https://doaj.org/article/1d85d815b0204aecb6c313653760540a
Autor:
David Dasenbrook, Joseph Bowles, Jonatan Bohr Brask, Patrick P Hofer, Christian Flindt, Nicolas Brunner
Publikováno v:
New Journal of Physics, Vol 18, Iss 4, p 043036 (2016)
Motivated by recent progress in electron quantum optics, we revisit the question of single-electron entanglement, specifically whether the state of a single electron in a superposition of two separate spatial modes should be considered entangled. We
Externí odkaz:
https://doaj.org/article/a152a326410a450393e889b0bd83d3b0
Autor:
Ralph Silva, Nicolas Brunner, Martí Perarnau-Llobet, Patrick P. Hofer, L. David M. Miranda, Jonatan Bohr Brask, Géraldine Haack
Publikováno v:
New Journal of Physics
The study of quantum thermal machines, and more generally of open quantum systems, often relies on master equations. Two approaches are mainly followed. On the one hand, there is the widely used, but often criticized, local approach, where machine su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dbdfed53c178d072b492d93094099b91
http://arxiv.org/abs/1707.09211
http://arxiv.org/abs/1707.09211
Publikováno v:
Physical Review Letters
We propose the use of a quantum thermal machine for low-temperature thermometry. A hot thermal reservoir coupled to the machine allows for simultaneously cooling the sample while determining its temperature without knowing the model-dependent couplin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::278e3f4eceaf6f25296025c455bf955e
https://pubmed.ncbi.nlm.nih.gov/28949576
https://pubmed.ncbi.nlm.nih.gov/28949576
Autor:
Patrick P. Hofer, Björn Sothmann
Publikováno v:
Physical Review B. 95
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::281630a06324e848bde531de9f2ac5a8
https://doi.org/10.1103/physrevb.95.039904
https://doi.org/10.1103/physrevb.95.039904
Autor:
Ralph Silva, Patrick P. Hofer, Nicolas Brunner, Marcus Huber, Martí Perarnau-Llobet, Jonatan Bohr Brask
Publikováno v:
Physical Review B
An implementation of a small quantum absorption refrigerator in a circuit QED architecture is proposed. The setup consists of three harmonic oscillators coupled to a Josephson unction. The refrigerator is autonomous in the sense that it does not requ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee5f395e8b8b82ad7a75883304381b6b
http://arxiv.org/abs/1607.05218
http://arxiv.org/abs/1607.05218
Publikováno v:
Physical Review B
We propose and analyze a simple mesoscopic quantum heat engine that exhibits both high-power and high-efficiency. The system consists of a biased Josephson junction coupled to two microwave cavities, with each cavity coupled to a thermal bath. Resona
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be7df5b8d73d13e1651be3aadcdf2638
https://doi.org/10.1103/physrevb.93.041418
https://doi.org/10.1103/physrevb.93.041418
Publikováno v:
Quantum Science and Technology, Vol. 3, No 3 (2018) P. 035014
The theory of quantum thermodynamics predicts fundamental bounds on work extraction from quantum states. As these bounds are derived in a very general and abstract setting, it is unclear how relevant they are in an experimental context, where control
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af1c86a21f29b7b657c092062c06c69e
https://doi.org/10.1088/2058-9565/aacbf3
https://doi.org/10.1088/2058-9565/aacbf3
Autor:
Patrick P. Hofer, Aashish A. Clerk
Publikováno v:
Physical Review Letters
The Keldysh-ordered full counting statistics is a quasi-probability distribution describing the fluctuations of a time-integrated quantum observable. While it is well known that this distribution can fail to be positive, the interpretation and origin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd3432aa6b9dcce10aae84987fbc15f0
http://arxiv.org/abs/1510.02416
http://arxiv.org/abs/1510.02416