A quantum controlled quantum eraser
Janos A. Bergou, Mark Hillery

TL;DR
This paper demonstrates how quantum state separation can be used to control the amount of path information erased in a quantum eraser setup, enabling partial erasure of quantum information.
Contribution
It introduces a novel application of quantum state separation to selectively erase path information in a quantum eraser, offering tunable control over quantum information transfer.
Findings
Partial erasure of path information is achievable.
Quantum state separation enables controlled information transfer.
The method allows for adjustable quantum erasure.
Abstract
We show that the protocol known as quantum state separation can be used to transfer information between the phase and path of a particle in an interferometer. When applied to a quantum eraser, this allows us to erase some, but not all, of the path information. We can control how much path information we wish to erase.
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