What can I use as a detector to collapse the wave function?

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SUMMARY

The discussion focuses on constructing a version of Young's double-slit experiment using household items and a laser, specifically exploring the concept of a detector to observe and collapse the wave function. The user, Britt, proposes using a tiny inductor with a resistor and measuring devices like a multimeter or ammeter to detect changes in resistance or current. A response clarifies that any interaction with the quantum system results in a partial collapse of the wave function, indicating that the mere act of measurement influences the system.

PREREQUISITES
  • Understanding of quantum mechanics principles, particularly wave function collapse.
  • Familiarity with Young's double-slit experiment and its implications.
  • Basic knowledge of electrical components, including inductors, resistors, multimeters, and ammeters.
  • Experience with experimental physics and measurement techniques.
NEXT STEPS
  • Research the principles of wave function collapse in quantum mechanics.
  • Study the setup and outcomes of Young's double-slit experiment in detail.
  • Learn about the role of measurement in quantum systems and its effects on wave functions.
  • Explore practical applications of inductors and measurement devices in experimental physics.
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Undergraduate students in physics, experimental physicists, and hobbyists interested in quantum mechanics and DIY physics experiments.

iamburitto
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Hi! I have a plan to build my own version of young's experiment using various household items, a laser, and my physics textbook. My question is about what I could use as a "detector" to observe and collapse the wave function? I had the idea of making a tiny inductor to go around one of the slits, with a resistor attached to it, and either use a multimeter to measure the change in resistance, or fashion an ammeter to measure the change in current. However I am not sure this would work, both because the current caused by the mag-field of the light through the inductor would be too weak, and because I'm not completely sure what causes the wave function to collapse, or what kind of measurement is needed; I'm just starting to get into quantum physics in my undergrad this year. If anyone could point me in the right direction it would be greatly appreciated!

-Britt
 
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iamburitto said:
Hi! I have a plan to build my own version of young's experiment using various household items, a laser, and my physics textbook. My question is about what I could use as a "detector" to observe and collapse the wave function? I had the idea of making a tiny inductor to go around one of the slits, with a resistor attached to it, and either use a multimeter to measure the change in resistance, or fashion an ammeter to measure the change in current. However I am not sure this would work, both because the current caused by the mag-field of the light through the inductor would be too weak, and because I'm not completely sure what causes the wave function to collapse, or what kind of measurement is needed; I'm just starting to get into quantum physics in my undergrad this year. If anyone could point me in the right direction it would be greatly appreciated!
I can't help you with setting up the experiment, but partial collapse happens with any sort of interaction.

Thus once you are able to get a response from the quantum system, you collapsed it already.
 

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