Popper's Experiment & Ghost Diffraction
It has been shown that this effect has actually been demonstrated experimentally in the so-called two-particle Ghost Interference experiment. This experiment was not carried out with the purpose of testing Popper's ideas, but ended up giving a conclusive result about Popper's test. In this experiment two entangled photons travel in different directions. Photon 1 goes through a slit, but there is no slit in the path of photon 2. However, Photon 2, if detected in coincidence with a fixed detector behind the slit detecting photon 1, shows a diffraction pattern. The width of the diffraction pattern for photon 2 increases when the slit in the path of photon 1 is narrowed. Thus, increase in the precision of knowledge about photon 2, by detecting photon 1 behind the slit, leads to increase in the scatter of photons 2.
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Famous quotes containing the words popper, experiment and/or ghost:
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—Karl Popper (1902–1994)
“Life is short, the art long, opportunity fleeting, experiment treacherous, judgment difficult.”
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—Galileo Galilei (1564–1642)