Quantum eraser Definition and 114 Threads

I am having difficulty understanding why the single rate of detection (as opposed to the coincidence rate) is unaffected during Quantum Eraser experiments. I'm looking at the great Kwait, Steinberg and Chiao paper: 'Observation of a "quantum eraser": A revival of coherence in a two-photon...

The paper described at http://en.wikipedia.org/wiki/Delayed_choice_quantum_eraser rather intrigues me. While the results appear counter intuitive to us, the properties being tested are those of light, and since light travels at speed c, is it not the case that for light time stands still...

I am just starting to study quantum mechanics, so I realize I am working with over-simplified examples, but that should work out since I'm hoping for simple answers... Among other things, the claim that this eraser would work has me scratching my head...

Just a few questions for anyone. I am trying to buffer photons for a long delay quantum eraser. Is there anyway to convert one arm of a 4km LIGO interferometer into a high-fidelity photon buffer? If a beam is merely reflected once down the length of the tube, it is stored for ~13 µs with...

Question: What would happen if this was delayed even further? We are talking nanoseconds here, but what if the particle was slowed or sent far away, before being reflected back? What I'm getting at is... What if the delay wasn't nanoseconds, but seconds? What if it was minutes? What if it was...

I have a question about the delayed choice quantum eraser with the double split experiment. Forgive me if this is a silly question.I have seen the following: TEST 1 1. shoot the particles & measure the result 2. erase the result 3. check the wall (whatever you shot the particle at) = wall...

http://www.joot.com/dave/writings/articles/entanglement/spookiness.shtml http://www.joot.com/dave/writings/articles/entanglement/quantum-eraser.png 1. a laser fires photons into a Beta Barium Borate (BBO) crystal; 2. the crystal entangles some of the photons; and then 3. entangled...

I am a High School Senior in Advanced Physics Topics class. We have recently deiscussed the basic double slit experiments and ways of quntum erasing and delaying choices, and how those situation affect the outcome of the screen whether it will show an interference pattern or not. We then...

Quantum mechanics has actually shown thru the quantum eraser experiments that we can rewrite the histories of photons, and that time is symmetrical. The best example of this is the translational interaction or pilot wave theory, where a particle future and particle past selves our in constant...

Hello all, I saw this setup for a quantum eraser: http://grad.physics.sunysb.edu/~amarch/PHY5656.gif In this setup, we get no interference: http://grad.physics.sunysb.edu/~amarch/PHY5658.gif Then, by inserting a polarizer we can erase the which way information: Setup with...

I have been contemplating this experiment for quite some time now, and I have some questions. http://xxx.lanl.gov/PS_cache/quant-ph/pdf/9903/9903047.pdf is a preliminary copy of the paper describing the experiment, for reference. The first and most obvious question would be whether it is...

Patrick posted the following interesting link in another thread: I'd like to discuss this some more. Whenever I have read about these experiments I have always hoped to see the results of one in particular but I have never found what I wanted. I can guess what the results would be, but...

where can i get an online copy of the original paper of Scully and Druhl ( about the quantum eraser experiment) ? and any other good material on the topic . also where can i get something about Popper's experiment? please help.

I was reading about Scully and Druhl's delayed-choice quantum eraser in Brian Greene's Fabric of the Cosmos today and I had a couple of questions that maybe you guys can help me with. As I understand the idea, in one type of this of experiment a photon is fired(?) to a beam splitter the...