The quantum eraser does work with particles with mass. Here is a paper that performs the experiment with electrons (specifically a transmon qubit): https://adv

The quantum eraser does work with particles with mass. Here is a paper that performs the experiment with electrons (specifically a transmon qubit): https://advances.sciencemag.org/content/3/5/e1603159 https://advances.sciencemag.org/content/3/5/e1603159 It works with even larger particles as well such as molecular ions or buckyballs.