Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Physics World

In praise of weakness

Aephraim M. Steinberg, Amir Feizpour, Lee A. Rozema, Dylan H. Mahler, Alex Hayat

Published Mar 1, 2013• 8 citations
Publisher

Abstract

Quantum physics is being transformed by a radical new conceptual and experimental approach known as weak measurement that can do everything from tackling basic quantum mysteries to mapping the trajectories of photons in a Young's double-slit experiment. Aephraim Steinberg, Amir Feizpour, Lee Rozema, Dylan Mahler and Alex Hayat unveil the power of this new technique.

DOI
10.1088/2058-7058/26/03/34

Related papers

Quantum Measurement Techniques: Modern Approaches and Trends

Aephraim M. Steinberg

While quantum measurement has long been seen as a deep philosophical conundrum, technological progress and new potential applications such as quantum information processing have turned it into a respectable experimental discipline as well. I will introduce a modern perspective on real-world quantum measurement, including the new paradigm of "weak measurement" and its (controversial) potential for addressing fundamental issues as well as for improving the precision of practical measurement.

•Jan 1, 2015•0 citations

Photon tracking scoopsPhysics Worldaward

Hamish Johnston

The 2011 Physics World Breakthrough of the Year has been awarded to Aephraim Steinberg and colleagues from the University of Toronto in Canada, who have, for the first time, tracked the average paths of single photons passing through a Young's double-slit experiment.

Physics World•Jan 1, 2012•0 citations

Experimental Study of Bohm’s Trajectory Theory --- Comprehensive Double Slit Experiments (2)

Hui Peng

Young’s double slit experiments, which represent the mystery of quantum mechanics, have been interpreted by quantum probability waves and by de Broglie-Bohm trajectories/pilot waves. Computer simulations of Bohm’s theory predict that (1) trajectories cannot cross, and (2) there is a triangle-shape area behind the double slit, in which there is no trajectory, i.e., no photons. In this article, we report the observations of novel comprehensive double slit experiments, which show that trajectories exist and cross in the triangular area. We show new phenomena that, in 2D cross double slit experiments and which way 2D cross double slit experiments, photons propagate along trajectories in the far field, and behave as particle and distribute as wave.

International Journal of Physics•Apr 23, 2021•5 citations

Viewpoint: Weak measurements just got stronger

Sandu Popescu

In the weird world of quantum mechanics, looking at time flowing backwards allows us to look forward to precision measurements.

•Apr 27, 2009•2 citations

Weak values and direct measurement of the quantum wavefunction

Robert W. Boyd

We review recent work showing that weak values and weak measurements can be used to perform certain measurements with unprecedented accuracy and moreover can be used to perform a direct measurement of the quantum wavefunction.

The Rochester Conferences on Coherence and Quantum Optics and the Quantum Information and Measurement meeting•Jan 1, 2013•0 citations

Double Slit Experiment Still Has Much to Offer (5): ---New Double Slit Experiment Violating Bohm's Trajectory Theory

Peng, Hui

Young's double slit experiments representing the mystery of quantum mechanics have been described by wave theories and Bohm's trajectory theory. By placing shields/blockers near the detector /screen, the comprehensive double slit/cross-doble slit experiments show that the fringes are created independently and partially, which violates the wave description. In this article we show that by placing the shields contacting the slide of the double slit, the comprehensive experiments show: (1) the existence of trajectories/photons immediately next to the double slit; and (2) the trajectories cross, which violate the prediction of the computer simulation of Bohm's trajectory theory. The comprehensive double slit/cross-double slit experiments violate both wave theory and trajectory theory. The comprehensive double slit/cross-double slit experiments provide the comprehensive phenomena/data for developing theoretical model to study the mystery of double slit, complementarity principle, wave-particle duality, wave theory and trajectory theories.

•Oct 10, 2021•4 citations
Quantum physics is being transformed by a radical new conceptual and experimental approach known as weak measurement that can do everything from tackling basic quantum mysteries to mapping the trajectories of photons in a Young's double-slit experiment. Aephraim Steinberg, Amir Feizpour, Lee Rozema, Dylan Mahler and Alex Hayat unveil the power of this new technique.
While quantum measurement has long been seen as a deep philosophical conundrum, technological progress and new potential applications such as quantum information processing have turned it into a respectable experimental discipline as well. I will introduce a modern perspective on real-world quantum measurement, including the new paradigm of "weak measurement" and its (controversial) potential for addressing fundamental issues as well as for improving the precision of practical measurement.
Young’s double slit experiments, which represent the mystery of quantum mechanics, have been interpreted by quantum probability waves and by de Broglie-Bohm trajectories/pilot waves. Computer simulations of Bohm’s theory predict that (1) trajectories cannot cross, and (2) there is a triangle-shape area behind the double slit, in which there is no trajectory, i.e., no photons. In this article, we report the observations of novel comprehensive double slit experiments, which show that trajectories exist and cross in the triangular area. We show new phenomena that, in 2D cross double slit experiments and which way 2D cross double slit experiments, photons propagate along trajectories in the far field, and behave as particle and distribute as wave.
Young's double slit experiments representing the mystery of quantum mechanics have been described by wave theories and Bohm's trajectory theory. By placing shields/blockers near the detector /screen, the comprehensive double slit/cross-doble slit experiments show that the fringes are created independently and partially, which violates the wave description. In this article we show that by placing the shields contacting the slide of the double slit, the comprehensive experiments show: (1) the existence of trajectories/photons immediately next to the double slit; and (2) the trajectories cross, which violate the prediction of the computer simulation of Bohm's trajectory theory. The comprehensive double slit/cross-double slit experiments violate both wave theory and trajectory theory. The comprehensive double slit/cross-double slit experiments provide the comprehensive phenomena/data for developing theoretical model to study the mystery of double slit, complementarity principle, wave-particle duality, wave theory and trajectory theories.