Lecture 3 | Quantum Entanglements, Part 1 (Stanford)
About | Information | History | Online | Facts | Discovery
Lecture 3 of Leonard Susskind's course concentrating on Quantum Entanglements (Part 1, Fall 2006). Recorded October 9, 2006 at Stanford University. This Stanford Continuing Studies course is the first of a three-quarter sequence of classes exploring the "quantum entanglements" in modern theoretical physics. Leonard Susskind is the Felix Bloch Professor of Physics at Stanford University. Complete playlist for the course: http://www.youtube.com/view_play_list?p=A27CEA1B8B27EB67 Stanford Continuing Studies: http://continuingstudies.stanford.edu/ About Leonard Susskind: http://www.stanford.edu/dept/physics/people/faculty/sussk... Stanford University channel on YouTube: http://www.youtube.com/stanford
Comments
-
Now I have to learn Trigonometry. I either forgot or did not learn anything either about the numbers, be it complex or imaginary. This is exactly the kind of course I wanted in which I can go back and learn what did not learn before and then apply that learning to learn something absolutely mindboggling.
Frankly, it still does not appear to me to be science. It is more like a science fiction written in Mathematics, rather than written in English. Sometimes I feel I must be crazy to go through this ordeal, where much isn't visual. But there is a carrot down the rabbit hole. -
It seems to me , the reason the electrons at 90deg, half emit photons is that only half of them line up when you prepare them. The other half continues the precession indefinitely being before the photon emission state threshold. The kinetic energy of the precession must exceed the photon energy. However the mathematics still works the same.
-
how do we form sigma matrices ?
-
blank at 1:40
-
if b isnt eigen state of sys,how do we know it exists
-
at 1:18:32 b is current state and a is predicted or future state
-
dif bw eigen state and any other state is that eigen state is measurable?
-
I am loving these lectures. But I have a question. He's using "pointer" to distinguish a vector in physical space for pedagogical purposes from a "vector", a vector in the vector space of states. Wouldn't it be less confusing to talk of state vectors, state spaces, orthogonal state vectors, etc. versus vectors, space, orthogonal/perpendicular etc.?
-
@ 7:50 He talks about the set of numbers such that x^2 + y^2 = 1. But wouldn't it have made more sense to say that the complex conjugate is essentially the inverse? Z1*Z2 = 1 is an inverse relationship.
-
Great, now I know how to get (without learning it by heart) sin (a+b) and cos (a+b), thanks to the e^ia notation. Beautiful.
-
this lecture series started in 2006. A decade later with all new discoveries we are back to square one. I call this "Einsteinian ghost".
-
Captain pointless comment strikes again. Who is that??
-
+Snakebloke your genius intellect is needed here! please provide some intellectualised geniusness to this subject
-
It seems to me the proof at 1:04:00 is wrong. The third line is wrong: <b|M|a>* =/= lambda_b* <b|a>*. lambda_b* should be lambda_a* there, and the proof doesn't go through. He should have written e.g.: <b|M|a> = lambda_a <b|a>; <a|M|b> = lambda_b <a|b>; <a|M|b>* = <b|M|a> = lambda_b* <b|a> = lambda_b <b|a>, as lambda_b* = lambda_b, for it is real. Hence lambda_a <b|a> = lambda_b <b|a>. Since lambda_a =/= lambda_b, <b|a> = 0.
-
Two important lessons: "When you multiply matrices, the order counts. The order counts when you multiply matrices" 1:41:33
-
That's programming for ya.
-
Who is taking this class? This seems strangely remedial for a graduate course in quantum mechanics at Stanford. I am a sophomore in undergrad and learned only that the pauli matrices anti-commute in 6 hours of lecture. Jesus.
-
around 58:00 for about 1 whole minute, is this guy serious?
-
simplicity is the fpundation of all knowledge
0m 0sLenght
488Rating