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Journal of consciousness exploration & research

Can an Experiment with Delayed-Choice Quantum Erasers & Time Crystals Show Evidence of a Multiverse?

Tariq Khan

Published May 19, 2023• 0 citations
OpenAlex

Abstract

In this article, the author proposes a modification to the delayed-choice quantum eraser experiment by including time crystals as an additional feature. The possible results or outcomes are considered including speculations on possible applications and philosophical interpretations. A proposed experiment using two observers at three points in time and a bank of delayed-choice quantum erasers each linked to a time crystal might either show we live in a multiverse, possibly send messages back in time, or redefine or even refute the current understanding of the nature of time crystals. The hope is that this proposal can help the debate over the nature of the delayed-choice quantum eraser experiment and help further clarify the nature of time crystals and even the role of conscious observers in quantum eraser experiments.

Related papers

Can an Experiment with Delayed-Choice Quantum Erasers and Time Crystals show evidence of a Multiverse?

Tariq Khan

A short and informal essay proposing a modification to the delayed-choice quantum eraser experiment by including time crystals as an additional feature. The possible results or outcomes are considered including speculations on possible applications and philosophical interpretations. A proposed experiment using two observers at three points in time and a bank of delayed-choice quantum erasers each linked to a time crystal might either show we live in a multiverse, possibly send messages back in time, or redefine or even refute the current understanding of the nature of time crystals. The hope is that this proposal can help the debate over the nature of the delayed-choice quantum eraser experiment and help further clarify the nature of time crystals and even the role of conscious observers in quantum eraser experiments.

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The Quantum Eraser Paradox

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The Delayed-Choice Quantum Eraser experiment is commonly interpreted as implying that in quantum mechanics a choice made at one time can influence an earlier event. We here suggest an extension of the experiment that results in a paradox when analysed in a local realist interpretation combined with backward causation (``dynamical retrocausality''). We argue that resolving the paradox requires giving up the idea that, in quantum mechanics, a choice can influence the past in this way, and that it instead requires a violation of Statistical Independence without (what most people think of as) retrocausality. Finally, we propose an implementation of the experiment that we believe to be possible with existing technology. This new experiment can distinguish between different types of hidden-variables theories in a way that Bell-type tests cannot: unlike in a Bell test, the measurement setting here is set by an earlier outcome, which makes the consistency of the backwards influence itself testable. We classify the fixed-point (consistency-enforcing) hidden-variables models of the experiment, which can reproduce quantum mechanics only if the backwards influence has no observable effect.

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Delayed-Choice Quantum Eraser in a Space-time Description

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Analysis of the quantum physics experiments relying on the object-based concepts in space-time terms leads to irresolvable paradoxes. These paradoxes can be resolved by accepting that the wave function collapse, similar to time, matches the object-based model in consciousness that describes the result of observation and, moreover, the understanding of this means that the fact is fixed in the mental map.

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A Standard Quantum Mechanical Treatment to Rationalize the Delayed-Choice Quantum Eraser

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Ever since the proposal of delayed choice quantum erasure and subsequent realization in the experiment by Kim et al., the interpretation and implications of delayed-choice experiments have remained a subject of intense foundational debate. This paper resolves the apparent paradox attached to the experiment using standard quantum mechanics. Using an extended Mach-Zehnder interferometer which captures every operational feature of the original experiment, we show that choosing between which-path and erasure detectors is simply a choice of measurement bases, which does not rewrite a photon's past. Furthermore, by mapping the experiment to a two-way Stern-Gerlach framework, we prove that quantum erasure is an expected result of measuring entangled states, not a physical anomaly. Ultimately, through a pedagogical game, we illustrate that the illusion of retrocausality arises from asking illegitimate questions, and that a forward-in-time description is entirely sufficient to explain the logic.

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We have realized a quantum eraser experiment in which the results demonstrate the possibility of observing both particle-like and wave-like behavior of a light quantum via quantum entanglement. The which-path or both-path information of a quantum can be erased or marked by its entangled twin even after the registration of the quantum.

Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)•Jan 20, 2003•1 citation

Quantum eraser: A proposed photon correlation experiment concerning observation and "delayed choice" in quantum mechanics

Marlan O. Scully, Kai J. Drühl

We propose and analyze an experiment designed to probe the extent to which information accessible to an observer and the "eraser" of this information affects measured results. The proposed experiment could also be operated in a "delayed-choice" mode.

Physical Review A•Apr 1, 1982•651 citations
In this article, the author proposes a modification to the delayed-choice quantum eraser experiment by including time crystals as an additional feature. The possible results or outcomes are considered including speculations on possible applications and philosophical interpretations. A proposed experiment using two observers at three points in time and a bank of delayed-choice quantum erasers each linked to a time crystal might either show we live in a multiverse, possibly send messages back in time, or redefine or even refute the current understanding of the nature of time crystals. The hope is that this proposal can help the debate over the nature of the delayed-choice quantum eraser experiment and help further clarify the nature of time crystals and even the role of conscious observers in quantum eraser experiments.
A short and informal essay proposing a modification to the delayed-choice quantum eraser experiment by including time crystals as an additional feature. The possible results or outcomes are considered including speculations on possible applications and philosophical interpretations. A proposed experiment using two observers at three points in time and a bank of delayed-choice quantum erasers each linked to a time crystal might either show we live in a multiverse, possibly send messages back in time, or redefine or even refute the current understanding of the nature of time crystals. The hope is that this proposal can help the debate over the nature of the delayed-choice quantum eraser experiment and help further clarify the nature of time crystals and even the role of conscious observers in quantum eraser experiments.
The Delayed-Choice Quantum Eraser experiment is commonly interpreted as implying that in quantum mechanics a choice made at one time can influence an earlier event. We here suggest an extension of the experiment that results in a paradox when analysed in a local realist interpretation combined with backward causation (``dynamical retrocausality''). We argue that resolving the paradox requires giving up the idea that, in quantum mechanics, a choice can influence the past in this way, and that it instead requires a violation of Statistical Independence without (what most people think of as) retrocausality. Finally, we propose an implementation of the experiment that we believe to be possible with existing technology. This new experiment can distinguish between different types of hidden-variables theories in a way that Bell-type tests cannot: unlike in a Bell test, the measurement setting here is set by an earlier outcome, which makes the consistency of the backwards influence itself testable. We classify the fixed-point (consistency-enforcing) hidden-variables models of the experiment, which can reproduce quantum mechanics only if the backwards influence has no observable effect.
Ever since the proposal of delayed choice quantum erasure and subsequent realization in the experiment by Kim et al., the interpretation and implications of delayed-choice experiments have remained a subject of intense foundational debate. This paper resolves the apparent paradox attached to the experiment using standard quantum mechanics. Using an extended Mach-Zehnder interferometer which captures every operational feature of the original experiment, we show that choosing between which-path and erasure detectors is simply a choice of measurement bases, which does not rewrite a photon's past. Furthermore, by mapping the experiment to a two-way Stern-Gerlach framework, we prove that quantum erasure is an expected result of measuring entangled states, not a physical anomaly. Ultimately, through a pedagogical game, we illustrate that the illusion of retrocausality arises from asking illegitimate questions, and that a forward-in-time description is entirely sufficient to explain the logic.