the_fungible_man t1_jdu7skt wrote on March 27, 2023 at 5:58 AM

Reply to comment by mfb- in Can you entangle more than two particles? Can entanglement be produced on a macroscopic scale to observe new physical interactions? by and-no-and-then

I read the article you linked, and achieved 0% comprehension, which made me wonder, how esoteric is the information it presented? Pretty basic for physics post-grad students? Or only those with advanced degrees specifically in more narrow physics specialties?

mfb- t1_jdu8hgd wrote on March 27, 2023 at 6:07 AM

The state itself should be easy to understand after a course on quantum mechanics, so hopefully for most with a BSc in physics. The state is a superposition of these two options "all particles are in state 1" and "all particles are in state 0" (for some systems that have these two options for each particle). It's pretty similar to the typical example of two entangled particles where you have one particle in one state and the other in the other, or both in the same state. Just with a third particle.

the_fungible_man t1_jdu9l79 wrote on March 27, 2023 at 6:22 AM

Thank you.

Blakut t1_jduspez wrote on March 27, 2023 at 10:54 AM

so there is no |101> state?

TopologicalInsulator t1_jduxfr3 wrote on March 27, 2023 at 11:46 AM

Not as part of the GHZ state, but you could of course make a |101> state on its own.

El_Sephiroth t1_jdzq8h1 wrote on March 28, 2023 at 11:38 AM

More like |-1,0,1> because |101> would be |0>+2×|1> If I remember correctly