Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Jacob L. Beckey"'
Publikováno v:
Physical Review Research, Vol 4, Iss 1, p 013083 (2022)
The quantum Fisher information (QFI) quantifies the ultimate precision of estimating a parameter from a quantum state and can be regarded as a reliability measure of a quantum system as a quantum sensor. However, estimation of the QFI for a mixed sta
Externí odkaz:
https://doaj.org/article/5f8701fe68b94cb0b1cac2c68a8b2ad6
Autor:
Anthony M. Polloreno, Jacob L. Beckey, Joshua Levin, Ariel Shlosberg, James K. Thompson, Michael Foss-Feig, David Hayes, Graeme Smith
We consider estimating the magnitude of a monochromatic AC signal that couples to a two-level sensor. For any detection protocol, the precision achieved depends on the signal's frequency and can be quantified by the quantum Fisher information. To stu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::196104bf2e2c53580c026eed2e89e7e5
http://arxiv.org/abs/2203.05520
http://arxiv.org/abs/2203.05520
Publikováno v:
Physical Review A. 104
In this work, we present a lower bound on the quantum Fisher information (QFI) which is efficiently computable on near-term quantum devices. This bound itself is of interest, as we show that it satisfies the canonical criteria of a QFI measure. Speci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a4b72084c19be670527082d5d09af018
https://doi.org/10.1103/physreva.104.062602
https://doi.org/10.1103/physreva.104.062602
Multipartite entanglement is an essential resource for quantum communication, quantum computing, quantum sensing, and quantum networks. The utility of a quantum state, $|\psi\rangle$, for these applications is often directly related to the degree or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9bae06d94c6d3b71a76bcdfb71ed6726
http://arxiv.org/abs/2104.06923
http://arxiv.org/abs/2104.06923
The Quantum Fisher Information (QFI) plays a crucial role in quantum information theory and in many practical applications such as quantum metrology. However, computing the QFI is generally a computationally demanding task. In this work we analyze a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05543d1383c493778d4ca34be957424d
Publikováno v:
Frontiers in Optics / Laser Science.
Optomechanical systems have applications in nanoscale materials characterization and ultralight dark matter detection. Here we outline a quantum optomechanics readout method based on truncated nonlinear interferometry for sensing below the standard q
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65041ff2de60c5db5cd1d26ce2477b54
https://doi.org/10.1364/ls.2020.lth2g.5
https://doi.org/10.1364/ls.2020.lth2g.5
Nonlinear interferometers that replace beam splitters in Mach-Zehnder interferometers with nonlinear amplifiers for quantum-enhanced phase measurements have drawn increasing interest in recent years, but practical quantum sensors based on nonlinear i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d5237df41c67d95952365c72d84cbf36
http://arxiv.org/abs/1912.10550
http://arxiv.org/abs/1912.10550
Broadband quantum noise reduction can be achieved in gravitational wave detectors by injecting frequency dependent squeezed light into the the dark port of the interferometer. This frequency dependent squeezing can be generated by combining squeezed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::097ed9fba1bac2855aca632e61ae6a2e
Publikováno v:
Conference on Lasers and Electro-Optics.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::496dd2abfcf150ea6a734f430f871649
https://doi.org/10.1364/cleo_at.2019.jw2a.117
https://doi.org/10.1364/cleo_at.2019.jw2a.117