# Demystifying the delayed-choice quantum eraser

@article{Qureshi2019DemystifyingTD, title={Demystifying the delayed-choice quantum eraser}, author={Tabish Qureshi}, journal={European Journal of Physics}, year={2019}, volume={41} }

The delayed-choice quantum eraser has long been a subject of controversy, and has been looked at as being incomprehensible to having retro-causal effect in time. Here the delayed-choice quantum eraser is theoretically analyzed using standard quantum mechanics. Employing a Mach–Zehnder interferometer, instead of a conventional two-slit interference, brings in surprising clarity. Some common mistakes in interpreting the experiment are pointed out. It is demonstrated that in the delayed mode there…

## 10 Citations

### The Delayed-Choice Quantum Eraser Leaves No Choice

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### Delayed-choice quantum erasers and the Einstein-Podolsky-Rosen paradox

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Considering the delayed-choice quantum eraser using a Mach-Zehnder interferometer with a nonsymmetric beam splitter, we explicitly demonstrate that it shares exactly the same formal structure with…

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. The quantum eraser variant of the double-slit experiment, and its ‘delayed choice’ sub-variant, are considered from the perspective of weak value and weak measurement theory (which is brieﬂy…

### The Vienna Delayed-Choice Quantum Eraser Leaves No Choice

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- 2020

A realizable delayed-choice quantum eraser, using a modified Mach-Zehnder (MZ) interferometer and polarization entangled photons, is theoretically analyzed here. The signal photon goes through a…

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We propose a quantum circuit that emulates a delayed-choice quantum eraser via bipartite entanglement with the extension that the degree of entanglement is adjustable. This provides a broader setting…

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