More on superposition. General state of a photon and spin states

MIT 8.04 Quantum Physics I, Spring 2016
Instructor: Barton Zwiebach

License: Creative Commons BY-NC-SA

[justindrew]

This guy is a genius teacher. As a teacher I can tell you this is the result of great intelligence, experience, and mastery of the subject.

[joesmith]

I like how much time he spends on clarifying the superposition principle and measurement.

[drdd]

I thoroughly enjoy this gentle teacher. Brilliant.

[nst]

Awesome mathod of explaining the theory, respect from India🙏

[zhaoxingdeng]

Amazing quantum mechanics! Amazing professor!

[sayedahmed]

Excellent way of teaching, absolutely fascinating !

[kaushaljain]

4:41 to 4:57 in previous lecture L1.4 you have said that after polarization state becomes either <photon:x> or <photon:y>. There is no significance of cosAlpha or sinAlpha coefficient which is in front of them. So after polarization there should be no or One real parameter which is no. "1".
Another Query_If there is one parameter then before polarization there should be three real parameter (one from real no 1 and two from complex no beta by alpha)

[brainstormingsharing]

Absolutely well done and definitely keep it up!!! 👍👍👍👍👍

[akindeleoduwole]

Quite enlightening and helpful. Thanks. From Nigeria

[nimeshdwivedidwivedi]

Wonderful session sir proper understand thats superposition sir

[zack_]

These Superposition lectures did not explain the mechanism how a particle can be in both positions at the same time but only talked about what it is which is already known. It looks really weird, even hard to teach by experts. By comparison, the entanglement topic is taught clearer in a simple but convincing eq.

[Mizraab]

But you have to look in another direction-Such a nice line to convey that perspective matters

[andressalvadorsartarelli]

Muy buen docente. Explica con mucha claridad

[brandomiranda]

how did he resolve Einstein's paradox (e.g. how do we know if half were down already before the measurement rather than this superposition)?

[jamesfullwood]

It's amazing how long a physicist can go on talking about something without even defining it (i.e., the wave function). If I was one of the students in the class I'd be like "Ok great, but what IS |A> ?"

[magnfiyerlmoro]

i dont understand when he says, for 2 complex parameters there is 4 real parameters, thanks for explaining!!

[jorfoas]

I would really appreciate if the teacher labeled axes properly. For example, in minute 7:23, I am assuming that both X and Y axis represent electric fields, but that should be clarified.

[georgesbegon]

Données claires excellent professeur l écriture est très lisible ce qui est déjà révélateur le tableau est bien filmé quant à la validité des théories je reste très modeste pour ma part vu que l on a constaté tant de remise en question depuis Newton ..

[silberlinie]

0:49 best. How he stands there, how the
many contradictions expressed by others
to what has been said here in his thoughts
rush past. And he then stomping his foot
inwardly and he defiantly arrives at an SO.

[joseluisrodriguez]

Exelente mi profe saludos desde la fiee lima peru especialidad ing electronica de potencia