Tim Maudlin
speaker
4,767 appearances
2 recordings
1 series
first heard Jul 2026
last heard 31 Aug
Tim Maudlin’s voice in public audio — every appearance, attributed to the second.
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recordings per month · last 12 monthsRecordings per month over the last 12 months — 2 in all, peaking in Aug 2026 with 1.
Appearances
If I can prepare a single particle X spin up and I can prepare a single particle Y spin down, then I can prepare a pair of particles.
The first one
Is X spin up and the second one's Y spin down.
Send this one to Alice and that one to Bob, right?
Mm-hmm.
So those are easy and you expect them and you can do that.
And those are called product states, where the spin of one particle has nothing to do with the spin of the other.
They're just they they are independent of each other.
Doing an experiment on one gives you zero information about what any experiment done on the other would come out.
Okay.
So you would expect there to be those states, and there are those states, and they're called product states, and you can kind of make any product state you want by giving one particle a particular spin and the other particle whatever spin you like.
And then how we represent that, and if you just look at the bottom here, again, it's very intuitive.
We just put the A for the particle going to Alice, B for the particle going to Bob.
And that first state would represent Alice's has been prepared X spin up and Bob's has been prepared X spin up.
And the second one, Alice has been prepared X spin up, and Bob's has been prepared X spin down.
And in the third one, Alice has been prepared Y spin up and Bob's has been prepared X spin up.
All of those are possible.
They have to be there.
But what we know is that what's really special about the EPR state.
The one that was used to run the EPR argument was that it was entangled.
Showing 501–520 of 4,767 · page 26 of 239
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