Zobrazeno 1 - 10
of 105
pro vyhledávání: '"Alessio Serafini"'
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-11 (2018)
Precise gravimetric measurements are an important but challenging task. Here, Qvarfort et al. theoretically show that, in an optomechanical cavity, only the phase of the optical output needs to be measured to obtain a precise value for the gravitatio
Externí odkaz:
https://doaj.org/article/a96482065a214a149ee168e799e6a45a
Autor:
Sofia Qvarfort, A. Douglas K. Plato, David Edward Bruschi, Fabienne Schneiter, Daniel Braun, Alessio Serafini, Dennis Rätzel
Publikováno v:
Physical Review Research, Vol 3, Iss 1, p 013159 (2021)
We study the fundamental sensitivity that can be achieved with an ideal optomechanical system in the nonlinear regime for measurements of time-dependent gravitational fields. Using recently developed methods to solve the dynamics of a nonlinear optom
Externí odkaz:
https://doaj.org/article/0c2468f3d22a429497d8424d9eb149cf
Autor:
Alfred Harwood, Alessio Serafini
Publikováno v:
Physical Review Research, Vol 2, Iss 4, p 043103 (2020)
Coherent feedback is the use of feedback loops not involving any measurements for the purpose of quantum control. This can be contrasted to measurement-based feedback where the feedback signal is directed by the result of measurements upon the system
Externí odkaz:
https://doaj.org/article/e1a47a12102f4942a5f53f42fcf8ba7a
Publikováno v:
New Journal of Physics, Vol 22, Iss 9, p 093062 (2020)
Is there any entanglement in the simplest ubiquitous bound system? We study the solutions to the time-independent Schrödinger equation for a hydrogenic system and devise two entanglement tests for free and localised states. For free hydrogenic syste
Externí odkaz:
https://doaj.org/article/5ef9e9cc4ba8447aae41c64480733b7c
Autor:
Nicholas Siemons, Alessio Serafini
Publikováno v:
Journal of Nanotechnology, Vol 2018 (2018)
This paper reviews both experimental and theoretical work on nanostructures showing high quantum yields due to the phenomenon of multiple exciton generation. It outlines the aims and barriers to progress in identifying further such nanostructures and
Externí odkaz:
https://doaj.org/article/be58130ffb3a40e8b3ff0cd473ad4208
Publikováno v:
New Journal of Physics, Vol 21, Iss 5, p 055004 (2019)
We study the non-Gaussian character of quantum optomechanical systems evolving under the fully nonlinear optomechanical Hamiltonian. By using a measure of non-Gaussianity based on the relative entropy of an initially Gaussian state, we quantify the a
Externí odkaz:
https://doaj.org/article/27203447dc914cf5a16a61fdddac4d20
Publikováno v:
New Journal of Physics, Vol 20, Iss 2, p 023030 (2018)
We present a novel approach to the separability problem for Gaussian quantum states of bosonic continuous variable systems. We derive a simplified necessary and sufficient separability criterion for arbitrary Gaussian states of m versus n modes, whic
Externí odkaz:
https://doaj.org/article/5b61a87158284da0918e589b231bec77
Publikováno v:
New Journal of Physics, Vol 18, Iss 10, p 103040 (2016)
Inspired by the notion that environmental noise is in principle observable, while fundamental noise due to spontaneous localization would not be, we study the estimation of the diffusion parameter induced by wave function collapse models under contin
Externí odkaz:
https://doaj.org/article/192953e501e041e28cc3f92f202d36f9
Publikováno v:
New Journal of Physics, Vol 17, Iss 7, p 073019 (2015)
With the purpose of controlling the steady state of a dielectric nanosphere levitated within an optical cavity, we study its conditional dynamics under simultaneous sideband cooling and additional time-continuous measurement of either the output cavi
Externí odkaz:
https://doaj.org/article/93026aa95c35480e9037f07e2d79965c
Publikováno v:
New Journal of Physics, Vol 14, Iss 9, p 093046 (2012)
Setting off from the classic input–output formalism, we develop a theoretical framework to characterize the Gaussian quantum channels relating the initial correlations of an open bosonic system to those of properly identified output modes. We then
Externí odkaz:
https://doaj.org/article/aa33a683f13b46cda93f7836a64618b8