Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Lukas J. Fiderer"'
Autor:
Sofiene Jerbi, Lukas J. Fiderer, Hendrik Poulsen Nautrup, Jonas M. Kübler, Hans J. Briegel, Vedran Dunjko
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-8 (2023)
Comparing the capabilities of different quantum machine learning protocols is difficult. Here, the authors show that different learning models based on parametrized quantum circuits can all be seen as quantum linear models, thus driving general concl
Externí odkaz:
https://doaj.org/article/be9a37f1040943988bb2f3b9570a8b1a
Publikováno v:
Quantum, Vol 7, p 1206 (2023)
Learning a hidden property of a quantum system typically requires a series of interactions. In this work, we formalise such multi-round learning processes using a generalisation of classical-quantum states, called classical-quantum combs. Here, "clas
Externí odkaz:
https://doaj.org/article/bfa2c36ca8a94c268c4651b58cae2b76
Autor:
Lukas J. Fiderer, Daniel Braun
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-9 (2018)
Enhanced sensing using quantum systems generally relies on preparation of highly non-classical states, such as entangled or squeezed states. Here the authors propose a different approach, based on hypersensitivity of quantum-chaotic dynamics with res
Externí odkaz:
https://doaj.org/article/0962406f72fa4d1caac12e968114dc25
Publikováno v:
PRX Quantum, Vol 2, Iss 2, p 020303 (2021)
Quantum metrology promises unprecedented measurement precision but suffers in practice from the limited availability of resources such as the number of probes, their coherence time, or nonclassical quantum states. The adaptive Bayesian approach to pa
Externí odkaz:
https://doaj.org/article/8f0457a3ccf849c2b0120aa749f70b4c
Publikováno v:
PRX Quantum, Vol 2, Iss 2, p 020308 (2021)
The quantum Fisher information matrix is a central object in multiparameter quantum estimation theory. It is usually challenging to obtain analytical expressions for it because most calculation methods rely on the diagonalization of the density matri
Externí odkaz:
https://doaj.org/article/d4d758d840f74212b61d810f988690d5
Publikováno v:
PRX Quantum. 2
The quantum Fisher information matrix is a central object in multiparameter quantum estimation theory. It is usually challenging to obtain analytical expressions for it because most calculation methods rely on the diagonalization of the density matri
Autor:
Sofiene Jerbi, Lukas J. Fiderer, Hendrik Poulsen Nautrup, Jonas M. Kübler, Hans J. Briegel, Vedran Dunjko
Machine learning algorithms based on parametrized quantum circuits are prime candidates for near-term applications on noisy quantum computers. In this direction, various types of quantum machine learning models have been introduced and studied extens
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eea6504a2f075a3edceed627722b94a8
Bell's theorem shows that no local hidden-variable model can explain the measurement statistics of a quantum system shared between two parties, thus ruling out a classical (local) understanding of nature. In this paper we demonstrate that by relaxing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::223d4b2c3284769e8d32683b18a4f1eb
Quantum metrology promises unprecedented measurement precision but suffers in practice from the limited availability of resources such as the number of probes, their coherence time, or non-classical quantum states. The adaptive Bayesian approach to p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c3f97894a7f676a137e67b11cabfc930
http://arxiv.org/abs/2003.02183
http://arxiv.org/abs/2003.02183
Publikováno v:
Physical review letters. 123(25)
We study quantum metrology for unitary dynamics. Analytic solutions are given for both the optimal unitary state preparation starting from an arbitrary mixed state and the corresponding optimal measurement precision. This represents a rigorous genera