Double-slit experiment revisited
arXiv:2211.13362 · doi:10.1016/j.aop.2025.170054
Abstract
The double-slit experiment is one of the quintessential quantum experiments. However, it tends to be overlooked that a theoretical account of this experiment requires the specification of the joint position and time distribution of detection at the screen, whose position marginal yields the famous interference pattern. The difficulty then arises what this distribution should be. While there exists a variety of proposals for a quantum mechanical time observable, there is no consensus about the right choice. Here, we consider Bohmian mechanics, which allows for a natural and practical approach to this problem. We simulate this distribution in the case of an initial Gaussian wave packet passing through a double-slit potential. We also consider a more challenging setup in which one of the slits is shut during flight. To experimentally probe the quantum nature of the time distribution, a sufficient longitudinal spread of the initial wave packet is required, which has not been achieved so far. Without sufficient spread, the temporal aspect of the distribution can be treated classically. We illustrate this for the case of the double-slit experiment with helium atoms by Kurtsiefer et al. [Nature 386, 150 (1997)], which reports the joint position and time distribution.
15 pages Latex, 6 figures; v2 substantial extension and revision, extra co-author
References in corpus (13)
- Dynamics of Tunneling Ionization using Bohmian Mechanics
- Exotic Bohmian arrival times of spin-1/2 particles I-An analytical treatment
- Times of Arrival and Gauge Invariance
- Single-, double-, and triple-slit diffraction of molecular matter-waves
- Questioning the adequacy of certain quantum arrival-time distributions
- Can the double-slit experiment distinguish between quantum interpretations?
- Scattering Times of Quantum Particles from the Gravitational Potential, and Equivalence Principle Violation
- On detection statistics in double-double-slit experiment
- Arrival Times Versus Detection Times
- Diffraction and interference with run-and-tumble particles
- Bohmian approach to spin-dependent time of arrival for particles in a uniform field and for particles passing through a barrier
- Comment on "the Spin Dependence of Detection Times and the Nonmeasurability of Arrival Times"
- (Un)physical consequences of "Quantum Measurements of Time"