8.422  Atomic & Optical Physics II

Assignment 3 Q2c

For this problem you should get terms that also depends on theta_tot (theta + theta'), not just phi and delta_theta.

Announced on 07 March 2011  9:07  a.m. by Shannon Xuanyue Wang

Assignment 3 Q1b

Equation (11) as originally appeared in the problem set is incorrect. The corrected version has been updated on the course website.

Announced on 05 March 2011  9:47  p.m. by Shannon Xuanyue Wang

Correction to Assignment 2 Q2

An important correction to problem #2 of Problem Set #2. (Sorry for the lateness of this announcement.) If you use the beamsplitter definition from problem 1 to do problem 2 a) and b), you will find that 2b) is impossible (the derivative term is 0). That is because the Yurke state as given is not the correct state for the Mach-Zehnder interferometer with that choice of beam splitter. Please use the definition of the beamsplitter as follows:
BaB^dagger = (a - ib) / sqrt(2)
BbB^dagger = (b - ia) / sqrt(2)

For 2c and d, you can use either definition.

Announced on 28 February 2011  8:59  p.m. by Shannon Xuanyue Wang