Weak Values and Quantum Properties
Sign Up to like & getrecommendations! Published in 2019 at "Foundations of Physics"
DOI: 10.1007/s10701-019-00245-3
Abstract: We investigate in this work the meaning of weak values through the prism of property ascription in quantum systems. Indeed, the weak measurements framework contains only ingredients of the standard quantum formalism, and as such… read more here.
Keywords: property ascription; quantum; weak measurements; quantum properties ... See more keywords
Weak measurements, non-classicality and negative probability
Sign Up to like & getrecommendations! Published in 2021 at "Quantum Information Processing"
DOI: 10.1007/s11128-021-03289-5
Abstract: This paper establishes a direct, robust and intimate connection between non classicality tests, from quantum game to discord to entanglement, and anomalous outcomes of weak measurements. This is accomplished by employing the recently introduced concept… read more here.
Keywords: probability; classicality negative; measurements non; weak measurements ... See more keywords
Observation of the Goos-Hänchen shift in graphene via weak measurements
Sign Up to like & getrecommendations! Published in 2017 at "Applied Physics Letters"
DOI: 10.1063/1.4974212
Abstract: We report the observation of the Goos-Hanchen effect in graphene via a weak value amplification scheme. We demonstrate that the amplified Goos-Hanchen shift in weak measurements is sensitive to the variation of graphene layers. Combining… read more here.
Keywords: observation goos; graphene via; weak measurements; graphene ... See more keywords
Optimal pre- and post-selections of weak measurements for precision parameter estimation
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Applied Physics"
DOI: 10.1063/1.4984264
Abstract: Weak measurements, which offer a significant signal enhancement with pre- and post-selections, have proven to be powerful for precision metrology. However, the measured precision of the parameter of interest is always limited by the post-selection-induced… read more here.
Keywords: weak measurements; pre post; post selections; post ... See more keywords
Quality analysis for precision metrology based on joint weak measurements without discarding readout data
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Physics A: Mathematical and Theoretical"
DOI: 10.1088/1751-8121/acd919
Abstract: We present a theoretical analysis for the metrology quality of joint weak measurements (JWMs), in close comparison with the weak-value-amplification technique. We point out that the difference probability function employed in the JWM scheme cannot… read more here.
Keywords: without discarding; weak measurements; analysis; metrology ... See more keywords
Suppressing amplitude damping in trapped ions: Discrete weak measurements for a nonunitary probabilistic noise filter
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review A"
DOI: 10.1103/physreva.107.052409
Abstract: The idea of exploiting maximally-entangled states as a resource lies at the core of several modalities of quantum information processing, including secure quantum communication, quantum computation, and quantum sensing. However, due to imperfections during or… read more here.
Keywords: amplitude damping; noise; quantum; suppressing amplitude ... See more keywords
Paradox of photons disconnected trajectories being located by means of “weak measurements” in the nested Mach–Zehnder interferometer
Sign Up to like & getrecommendations! Published in 2017 at "JETP Letters"
DOI: 10.1134/s0021364017030110
Abstract: Recently, a scheme based on the method of weak measurements to register the trajectories of photons passing through a nested Mach–Zehnder interferometer was proposed [L. Vaidman, Phys. Rev. A 87, 052104 (2013)] and then realized… read more here.
Keywords: disconnected trajectories; zehnder interferometer; weak measurements; nested mach ... See more keywords
Experimental realization of sequential weak measurements of non-commuting Pauli observables.
Sign Up to like & getrecommendations! Published in 2019 at "Optics express"
DOI: 10.1364/oe.27.006089
Abstract: Sequential weak measurements of non-commuting observables are not only fundamentally interesting in terms of quantum measurement but also show potential in various applications. Previously reported methods, however, can only make limited sequential weak measurements experimentally.… read more here.
Keywords: non commuting; pauli observables; measurements non; commuting pauli ... See more keywords
Photonic spin Hall effect: a new window in D-shaped fiber by weak measurements.
Sign Up to like & getrecommendations! Published in 2019 at "Optics express"
DOI: 10.1364/oe.27.014064
Abstract: The enhanced photonic spin Hall effect (SHE) based on the D-shaped fiber with Ag-Ni alloy/silicon layers is proposed and theoretically investigated under excitation of surface plasmon resonance (SPR). In order to achieve the maximum transverse… read more here.
Keywords: photonic spin; hall effect; spin hall; shaped fiber ... See more keywords
Extracting information from single qubits among multiple observers with optimal weak measurements.
Sign Up to like & getrecommendations! Published in 2020 at "Optics express"
DOI: 10.1364/oe.395033
Abstract: In the context of quantum information, major efforts have been made to maximize the mutual information by measuring single copies of signal states. In general, one execution of optimal projective measurement extracts all the accessible… read more here.
Keywords: information; weak measurements; optimal weak; mutual information ... See more keywords