What particles are affected by quantum entanglement?

Quantum entanglement has been demonstrated experimentally with photons, neutrinos, electrons, molecules as large as buckyballs, and even small diamonds.

What is meant by delayed-choice quantum eraser?

The delayed-choice quantum eraser experiment investigates a paradox. If a photon manifests itself as though it had come by a single path to the detector, then “common sense” (which Wheeler and others challenge) says that it must have entered the double-slit device as a particle.

What does the delayed-choice quantum eraser experiment tell us?

The delayed-choice quantum eraser experiment investigates a paradox. If a photon manifests itself as though it had come by a single path to the detector, then “common sense” (which Wheeler and others challenge) says that it must have entered the double-slit device as a particle.

Why use entangled photons for quantum erasers?

Furthermore, use of entangled photons enables the design and implementation of versions of the quantum eraser that are impossible to achieve with single-photon interference, such as the delayed-choice quantum eraser, which is the topic of this article. Figure 2.

Is there a classical equivalent of the quantum eraser?

Versions of the quantum eraser using entangled photons, however, are intrinsically non-classical. Because of that, in order to avoid any possible ambiguity concerning the quantum versus classical interpretation, most experimenters have opted to use nonclassical entangled-photon light sources to demonstrate quantum erasers with no classical analog.

How are entangled photons deflected by prism PS?

The other entangled photon, referred to as the “idler” photon (look at the red and light-blue lines going downwards from the Glan–Thompson prism), is deflected by prism PS that sends it along divergent paths depending on whether it came from slit A or slit B .