Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Escher, B. M."'
Publikováno v:
Phys. Rev. A 91, 062107 (2015)
The implementation of weak-value amplification requires the pre- and post-selection of states of a quantum system, followed by the observation of the response of the meter, which interacts weakly with the system. Data acquisition from the meter is co
Externí odkaz:
http://arxiv.org/abs/1410.7415
Autor:
Escher, B. M.
The quantum variables that can be accessed directly by experiments are described by observables. Therefore, physical parameters can only be evaluated indirectly, via estimations based on experimental measurement results. I show that the quantum sensi
Externí odkaz:
http://arxiv.org/abs/1212.2533
Precise measurements of tiny forces and displacements play an important role in science and technology. The precision of recent experiments, while beginning to reach the limits imposed by quantum mechanics, is necessarily spoiled by the unavoidable i
Externí odkaz:
http://arxiv.org/abs/1210.3316
Publikováno v:
Phys. Rev. Lett. 110, 050402 (2013)
The evaluation of the minimal evolution time between two distinguishable states of a system is important for assessing the maximal speed of quantum computers and communication channels. Lower bounds for this minimal time have been proposed for unitar
Externí odkaz:
http://arxiv.org/abs/1209.0362
Publikováno v:
Phys. Rev. Lett. 109, 190404 (2012)
The minimum achievable statistical uncertainty in the estimation of physical parameters is determined by the quantum Fisher information. Its computation for noisy systems is still a challenging problem. Using a variational approach, we present an equ
Externí odkaz:
http://arxiv.org/abs/1207.3307
Publikováno v:
Nature Physics 7, 406-411 (2011)
The estimation of parameters characterizing dynamical processes is central to science and technology. The estimation error changes with the number N of resources employed in the experiment (which could quantify, for instance, the number of probes or
Externí odkaz:
http://arxiv.org/abs/1201.1693
Publikováno v:
J. Phys. B 44, 154015 (2011)
We analyze quantum state-transfer optimization within hybrid open systems, from a "noisy" (write-in) qubit to its "quiet" counterpart (storage qubit). Intriguing interplay is revealed between our ability to avoid bath-induced errors that profoundly d
Externí odkaz:
http://arxiv.org/abs/1010.5211
Publikováno v:
Nature Physics. May2011, Vol. 7 Issue 5, p406-411. 6p. 1 Diagram, 2 Graphs.
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