Zobrazeno 1 - 10
of 362
pro vyhledávání: '"Howard M. Wiseman"'
Publikováno v:
PRX Quantum, Vol 4, Iss 4, p 040340 (2023)
State smoothing is a technique to estimate a state at a particular time, conditioned on information obtained both before (past) and after (future) that time. For a classical system, the smoothed state is a normalized product of the filtered state (a
Externí odkaz:
https://doaj.org/article/6a0c2cfabb0e4ea9922579255465382b
Publikováno v:
Quantum, Vol 7, p 1112 (2023)
A recent paper by two of us and co-workers \cite{CQD20}, based on an extended Wigner's friend scenario, demonstrated that certain empirical correlations predicted by quantum theory (QT) violate inequalities derived from a set of metaphysical assumpti
Externí odkaz:
https://doaj.org/article/59321492af554c8cab6c0e0031df6683
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-6 (2018)
Measurements of an unknown optical phase have not yet been performed with the ultimate precision, i.e. saturating the Heisenberg limit. Here, Daryanoosh et al. demonstrate this with a precision within 4% of the Heisenberg limit by combining photonic
Externí odkaz:
https://doaj.org/article/cc3e69b9a9d74d7e82dc7c9b5b2e31f3
Autor:
Antoine Tilloy, Howard M. Wiseman
Publikováno v:
Quantum, Vol 5, p 594 (2021)
Spontaneous collapse models and Bohmian mechanics are two different solutions to the measurement problem plaguing orthodox quantum mechanics. They have, a priori nothing in common. At a formal level, collapse models add a non-linear noise term to the
Externí odkaz:
https://doaj.org/article/370f2027e3d546f381db42316b990b0a
Autor:
Eric G. Cavalcanti, Howard M. Wiseman
Publikováno v:
Entropy, Vol 23, Iss 8, p 925 (2021)
We provide a new formulation of the Local Friendliness no-go theorem of Bong et al. [Nat. Phys. 16, 1199 (2020)] from fundamental causal principles, providing another perspective on how it puts strictly stronger bounds on quantum reality than Bell’
Externí odkaz:
https://doaj.org/article/795b66f0c5014b70987a113f142f3801
Autor:
Bo Qi, Zhibo Hou, Yuanlong Wang, Daoyi Dong, Han-Sen Zhong, Li Li, Guo-Yong Xiang, Howard M. Wiseman, Chuan-Feng Li, Guang-Can Guo
Publikováno v:
npj Quantum Information, Vol 3, Iss 1, Pp 1-7 (2017)
Quantum tomography: Adaptivity improves precision Quantum state tomography is an essential task in the development of quantum technology. The key problem is to find a strategy that has a high level of estimation accuracy and is easy to experimentally
Externí odkaz:
https://doaj.org/article/cf74ecd82e854942a2f3282b5168091b
Autor:
Farzad Ghafari, Nora Tischler, Jayne Thompson, Mile Gu, Lynden K. Shalm, Varun B. Verma, Sae Woo Nam, Raj B. Patel, Howard M. Wiseman, Geoff J. Pryde
Publikováno v:
Physical Review X, Vol 9, Iss 4, p 041013 (2019)
Stochastic processes underlie a vast range of natural and social phenomena. Some processes such as atomic decay feature intrinsic randomness, whereas other complex processes, e.g., traffic congestion, are effectively probabilistic because we cannot t
Externí odkaz:
https://doaj.org/article/cf15ebf40ba44bf0bcf10047d946da13
Autor:
Prahlad Warszawski, Howard M. Wiseman
Publikováno v:
Quantum, Vol 3, p 192 (2019)
For a Markovian (in the strongest sense) open quantum system it is possible, by continuously monitoring the environment, to perfectly track the system; that is, to know the stochastically evolving pure state of the system without altering the master
Externí odkaz:
https://doaj.org/article/bf2d50b931d641f291281b0de317db7a
Publikováno v:
Entropy, Vol 20, Iss 8, p 567 (2018)
“Locality” is a fraught word, even within the restricted context of Bell’s theorem. As one of us has argued elsewhere, that is partly because Bell himself used the word with different meanings at different stages in his career. The original, we
Externí odkaz:
https://doaj.org/article/fecd42b5de66438c99ae20a71be38344
Publikováno v:
New Journal of Physics, Vol 20, Iss 12, p 123005 (2018)
As commonly understood, the noise spectroscopy problem—characterizing the statistical properties of a noise process affecting a quantum system by measuring its response—is mathematically ill-posed, in the sense that no unique noise process leads
Externí odkaz:
https://doaj.org/article/056c644ac6c04524a97c8b3297f7c398