PhilSci Archive

Taming the Delayed Choice Quantum Eraser

Fankhauser, Johannes (2017) Taming the Delayed Choice Quantum Eraser. [Preprint]

[img]
Preview
Text
Taming the Delayed Choice Quantum Eraser.pdf

Download (3MB) | Preview

Abstract

In this paper I discuss the delayed choice quantum eraser experiment by giving a straightforward account in standard quantum mechanics. At first glance, the experiment suggests that measurements on one part of an entangled photon pair (the idler) can be employed to control whether the measurement outcome of the other part of the photon pair (the signal) produces interference fringes at a screen after being sent through a double slit. Significantly, the choice whether there is interference or not can be made long after the signal photon encounters the screen. The results of the experiment have been alleged to invoke some sort of 'backwards in time influences'. I argue that in the standard collapse interpretation the issue can be eliminated by taking into account the collapse of the overall entangled state due to the signal photon. Likewise, in the de Broglie-Bohm picture the particle's trajectories can be given a well-defined description at any instant of time during the experiment. Thus, there is no need to resort to any kind of 'backwards in time influence'. As a matter of fact, the delayed choice quantum eraser experiment turns out to resemble a Bell-type measurement, and so there really is no mystery.


Export/Citation: EndNote | BibTeX | Dublin Core | ASCII/Text Citation (Chicago) | HTML Citation | OpenURL
Social Networking:
Share |

Item Type: Preprint
Creators:
CreatorsEmailORCID
Fankhauser, Johannesjohannesfankhauser@gmx.net
Keywords: double slit experiment, delayed choice quantum eraser, retrocausal action, de Broglie-Bohm theory, Bell measurement
Subjects: Specific Sciences > Physics > Quantum Mechanics
Depositing User: Mr. Johannes Fankhauser
Date Deposited: 13 Aug 2017 16:15
Last Modified: 13 Aug 2017 16:15
Item ID: 13262
Official URL: https://arxiv.org/abs/1707.07884
Subjects: Specific Sciences > Physics > Quantum Mechanics
Date: 12 August 2017
URI: http://philsci-archive.pitt.edu/id/eprint/13262

Monthly Views for the past 3 years

Monthly Downloads for the past 3 years

Plum Analytics

Actions (login required)

View Item View Item