85 citations · 305 across the 14 of their papers we have counts for
14 papers
Interactions of pre- and postselected quantum particles
Gregory Reznik, Jan Dziewior, Shrobona Bagchi +1
An approach for analysis of effective interaction between pre- and postselected quantum particles is developed. It is argued that the cases of complete pre- and postselection of pa…
Comment on "Photons can tell 'contradictory' answer about where they have been''
Gregory Reznik, Carlotta Versmold, Jan Dziewior +4
Yuan and Feng [Eur. Phys. J. Plus 138:70, 2023] recently proposed a modification of the nested Mach-Zehnder interferometer experiment performed by Danan et al. [Phys. Rev. Lett. 11…
Analysing quantum systems with randomised measurements
Paweł Cieśliński, Satoya Imai, Jan Dziewior +6
Measurements with randomly chosen settings determine many important properties of quantum states without the need for a shared reference frame or calibration. They naturally emerge…
Photons are lying about where they have been, again
Gregory Reznik, Carlotta Versmold, Jan Dziewior +5
Bhati and Arvind [Phys. Lett. A, 127955 (2022)] recently argued that in a specially designed experiment the timing of photon detection events demonstrates photon presence at a loca…
Valid and efficient entanglement verification with finite copies of a quantum state
Pawel Cieslinski, Jan Dziewior, Lukas Knips +5
Detecting entanglement in multipartite quantum states is an inherently probabilistic process, typically with a few measured samples. The level of confidence in entanglement detecti…
Anomalous weak values via a single photon detection
E. Rebufello, F. Piacentini, A. Avella +7
Is it possible that a measurement of a spin component of a spin-1/2 particle yields the value 100? In 1988 Aharonov, Albert and Vaidman argued that upon pre- and postselection of p…
Tracing Information Flow from Open Quantum Systems
Jan Dziewior, Leonardo Ruscio, Lukas Knips +3
Open quantum systems are highly relevant, both for practical applications as well as for fundamental questions about the nature of information and its transfer, encompassing for ex…
Cooperation and dependencies in multipartite systems
Waldemar Klobus, Marek Miller, Mahasweta Pandit +7
We propose an information-theoretic quantifier for the advantage gained from cooperation that captures the degree of dependency between subsystems of a global system. The quantifie…
Multipartite Entanglement Analysis From Random Correlations
Lukas Knips, Jan Dziewior, Waldemar Kłobus +5
Quantum entanglement is usually revealed via a well aligned, carefully chosen set of measurements. Yet, under a number of experimental conditions, for example in communication with…
Measurements of nonlocal variables and demonstration of the failure of the product rule for a pre- and postselected pair of photons
Xiao-Ye Xu, Wei-Wei Pan, Qin-Qin Wang +9
We report the first implementation of the von Neumann instantaneous measurements of nonlocal variables which becomes possible due to technological achievements in creating hyperent…
Measurement-Disturbance Tradeoff Outperforming Optimal Cloning
Lukas Knips, Jan Dziewior, Anna-Lena K. Hashagen +3
One of the characteristic features of quantum mechanics is that every measurement that extracts information about a general quantum system necessarily causes an unavoidable disturb…
Universality of local weak interactions and its application for interferometric alignment
Jan Dziewior, Lukas Knips, Demitry Farfurnik +7
The modification of the effect of interactions of a particle as a function of its pre- and postselected states is analyzed theoretically and experimentally. The universality proper…
An Improved Experiment to Determine the `Past of a Particle' in the Nested Mach-Zehnder Interferometer
Alon Ben-Israel, Lukas Knips, Jan Dziewior +4
We argue that the modification proposed by Li et al. [Chin. Phys. Lett. 32, 050303 (2015)] to the experiment of Danan et al. [Phys. Rev. Lett. 111, 240402 (2013)] does not test the…
Weak value beyond conditional expectation value of the pointer readings
Lev Vaidman, Alon Ben-Israel, Jan Dziewior +6
It is argued that a weak value of an observable is a robust property of a single pre- and post-selected quantum system rather than a statistical property. During an infinitesimal t…