Zobrazeno 1 - 10
of 882
pro vyhledávání: '"Dobrzanski, P."'
We derive fundamental bounds for general quantum metrological models involving both temporal or spatial correlations (mathematically described by quantum combs), which may be effectively computed in the limit of a large number of probes or sensing ch
Externí odkaz:
http://arxiv.org/abs/2410.01881
Assuming a Markovian time evolution of a quantum sensing system, we provide a general characterization of the optimal sensitivity scalings with time, under the most general quantum control protocols. We allow the estimated parameter to influence both
Externí odkaz:
http://arxiv.org/abs/2404.03954
Autor:
Kurdzialek, Stanislaw, Dulian, Piotr, Majsak, Joanna, Chakraborty, Sagnik, Demkowicz-Dobrzanski, Rafal
We develop an efficient algorithm for determining optimal adaptive quantum estimation protocols with arbitrary quantum control operations between subsequent uses of a probed channel.We introduce a tensor network representation of an estimation strate
Externí odkaz:
http://arxiv.org/abs/2403.04854
Publikováno v:
Computer Methods in Applied Mechanics and Engineering 423, 116841 (2024)
A new approach is developed for computational modelling of microstructure evolution problems. The approach combines the phase-field method with the recently-developed laminated element technique (LET) which is a simple and efficient method to model w
Externí odkaz:
http://arxiv.org/abs/2402.10906
Publikováno v:
Computers and Structures 291, 107209 (2024)
When modelling discontinuities (interfaces) using the finite element method, the standard approach is to use a conforming finite-element mesh in which the mesh matches the interfaces. However, this approach can prove cumbersome if the geometry is com
Externí odkaz:
http://arxiv.org/abs/2309.08577
Publikováno v:
Phys. Rev. Lett. 131, 090801 (2023)
We derive new bounds on achievable precision in the most general adaptive quantum metrological scenarios. The bounds are proven to be asymptotically saturable and equivalent to the known parallel scheme bounds in the limit of large number of channel
Externí odkaz:
http://arxiv.org/abs/2212.08106
Time dilation is a difference in measured time between two clocks that either move with different velocities or experience different gravitational potentials. Both of these effects stem from the theory of relativity and are usually associated with cl
Externí odkaz:
http://arxiv.org/abs/2211.02425
Publikováno v:
Phys. Rev. Lett. 130, 160802 (2023)
Fisher Information is a key notion in the whole field of quantum metrology. It allows for a direct quantification of maximal achievable precision of estimation of parameters encoded in quantum states using the most general quantum measurement. It fai
Externí odkaz:
http://arxiv.org/abs/2206.12430
Publikováno v:
BJPsych Open, Vol 10, Pp S31-S32 (2024)
Aims The aims of this study were to evaluate the literature regarding the use of ultra-low-field magnetic resonance imaging (ULF-MRI) and its potential use in dementia diagnosis. Access to neuroimaging causes bottlenecks in dementia diagnostic pathwa
Externí odkaz:
https://doaj.org/article/301efac27c694a6d8109b3d997a8ba15
Publikováno v:
BJPsych Open, Vol 10, Pp S88-S89 (2024)
Aims Non epileptic attacks (also referred to as psychogenic non-epileptic seizures, functional seizures or dissociative seizures) are similar in appearance to epileptic seizures but are not accompanied by ictal electroencephalographic (EEG) discharge
Externí odkaz:
https://doaj.org/article/2a858922886b45e0a48f66c98cbd9723