Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Sabine Wölk"'
Autor:
Arne Hamann, Sabine Wölk
Publikováno v:
New Journal of Physics, Vol 24, Iss 3, p 033044 (2022)
In the last decade quantum machine learning has provided fascinating and fundamental improvements to supervised, unsupervised and reinforcement learning (RL). In RL, a so-called agent is challenged to solve a task given by some environment. The agent
Externí odkaz:
https://doaj.org/article/173a314c00ee46448751443bdc1a61f6
Publikováno v:
New Journal of Physics, Vol 21, Iss 1, p 013015 (2019)
It is generally assumed that every process in quantum physics can be described mathematically by a completely positive map. However, experimentally reconstructed processes are not necessarily completely positive due to statistical or systematic error
Externí odkaz:
https://doaj.org/article/25a5d89394954d94835129e54533cb67
Publikováno v:
New Journal of Physics, Vol 20, Iss 5, p 053058 (2018)
The resource theory of quantum coherence studies the off-diagonal elements of a density matrix in a distinguished basis, whereas the resource theory of purity studies all deviations from the maximally mixed state. We establish a direct connection bet
Externí odkaz:
https://doaj.org/article/3dfeb580b33a4d1eb7553f13c3a8e659
Autor:
Sabine Wölk, Christof Wunderlich
Publikováno v:
New Journal of Physics, Vol 19, Iss 8, p 083021 (2017)
Novel ion traps that provide either a static or a dynamic magnetic gradient field allow for the use of radio-frequency radiation for coupling internal and motional states of ions, which is essential for conditional quantum logic. We show that the Ham
Externí odkaz:
https://doaj.org/article/5d230aa8447a454bb176f8cb386e3a0d
Autor:
Sabine Wölk, Otfried Gühne
Publikováno v:
New Journal of Physics, Vol 18, Iss 12, p 123024 (2016)
The size of controllable quantum systems has grown in recent times. Therefore, the spatial degree of freedom becomes more and more important in experimental quantum systems. However, the investigation of entanglement in many-body systems mainly conce
Externí odkaz:
https://doaj.org/article/da70b86ef8bf483bb39eba01d1c8c2c9
Publikováno v:
Quantum Machine Intelligence
In recent years, quantum-enhanced machine learning has emerged as a particularly fruitful application of quantum algorithms, covering aspects of supervised, unsupervised and reinforcement learning. Reinforcement learning offers numerous options of ho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5d63da019da5ce61e5eba55279d1fca
https://doi.org/10.1007/s42484-021-00049-7
https://doi.org/10.1007/s42484-021-00049-7
Autor:
Dirk Englund, Philip Walther, Hans J. Briegel, Michael Hochberg, Sabine Wölk, Valeria Saggio, Teodor Strömberg, Nicolai Friis, Nicholas C. Harris, Vedran Dunjko, Beate E. Asenbeck, Arne Hamann, Peter Schiansky
Publikováno v:
Quantum Nanophotonic Materials, Devices, and Systems 2021.
As the field of artificial intelligence is pushed forward, the question arises of how fast autonomous machines can learn. Within artificial intelligence, an important paradigm is reinforcement learning, where agents - learning entities capable of dec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b61cac23d96ed88065aa3421e99aa6d
https://doi.org/10.1117/12.2593720
https://doi.org/10.1117/12.2593720
Autor:
Michael Hochberg, Arne Hamann, Peter Schiansky, Vedran Dunjko, Dirk Englund, Sabine Wölk, Teodor Strömberg, Beate E. Asenbeck, Nicolai Friis, Nicholas C. Harris, Hans J. Briegel, Philip Walther, Valeria Saggio
Publikováno v:
Nature
Increasing demand for algorithms that can learn quickly and efficiently has led to a surge of development within the field of artificial intelligence (AI). An important paradigm within AI is reinforcement learning (RL), where agents interact with env
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13ea790cd5035420a03785ac382beea2
https://doi.org/10.1038/s41586-021-03242-7
https://doi.org/10.1038/s41586-021-03242-7
We consider non-local sensing of scalar signals with specific spatial dependence in the Bayesian regime. We design schemes that allow one to achieve optimal scaling and are immune to noise sources with a different spatial dependence than the signal.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::17197434c79a3bd504d93c534879a657
http://arxiv.org/abs/2003.05341
http://arxiv.org/abs/2003.05341
Publikováno v:
Journal of Modern Optics
We report a detailed investigation on near-ground state cooling of one and two trapped atomic ions. We introduce a simple sideband cooling method for confined atoms and ions, using RF radiation applied to bare ionic states in a static magnetic field
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a9e226f6ecc3acdbdac15e696566a7de
https://doi.org/10.1080/09500340.2017.1401137
https://doi.org/10.1080/09500340.2017.1401137