130 reputation
9
bio website
location Canberra
age
visits member for 2 years, 1 month
seen Apr 29 at 14:28

I'm an Honours student in physics working on quantum optics and solid state quantum computing, especially on dynamic decoherence control. I expect to graduate in July 2014.


Sep
24
awarded  Autobiographer
Jul
2
awarded  Curious
Oct
29
awarded  Teacher
Oct
29
accepted Distinction between Larmor frequency and Rabi frequency
Oct
29
answered Distinction between Larmor frequency and Rabi frequency
Oct
29
asked Does pure electric dipole have higher order moments?
Sep
2
asked How does QFT help with entanglement?
Aug
15
asked Distinction between Larmor frequency and Rabi frequency
Jul
31
comment Derivation for 7.14 in Atomic Physics by Foot
@neutrino no worries. yeah definitely. it was my first time learning atomic physics.
Jul
31
accepted Derivation for 7.14 in Atomic Physics by Foot
Jul
31
comment Derivation for 7.14 in Atomic Physics by Foot
@neutrino Anyway I should give you the credit. Otherwise it's going to be unfair. Although I really want to know how Foot arrive at 7.14
Jul
31
comment Derivation for 7.14 in Atomic Physics by Foot
@neutrino You're right. That seems really silly. I don't get why Foot skipped so many steps in an introductory textbook... Also it seems that he didn't apply the rotating wave approximation to get rid of the diagonal terms of the perturbative Hamiltonian.
Jul
31
revised Derivation for 7.14 in Atomic Physics by Foot
edited body
Jul
31
revised Derivation for 7.14 in Atomic Physics by Foot
added 585 characters in body
Jul
31
comment Derivation for 7.14 in Atomic Physics by Foot
@neutrino Thanks a lot for the detailed explanation. I realised that I made a mistake in my previous comment. What I was actually looking for was the derivation of these equations $$c_1(t)=1$$ $$c_2(t)=\frac{\Omega^*}{2}\{\frac{1-e^{i(\omega_0+\omega)t}}{\omega_0+\omega}+ \frac{1-e^{i(\omega_0-\omega)t}}{\omega_0-\omega}\}"$$ when I "copy and paste" from my previous question, I made such a mistake... I'm sorry for making you do more work(which wasn't necessary as I derived every step up to the system of ODEs already...).
Jul
30
awarded  Supporter
Jul
30
comment Derivation for 7.14 in Atomic Physics by Foot
By the way, I voted your answer up. But forgive me for not accepting your answer for now(simply because I was looking for something else, i.e. the way Foot did this question).
Jul
30
awarded  Commentator
Jul
30
comment Derivation for 7.14 in Atomic Physics by Foot
Thanks a lot for the help! It was a good answer. And personally I would do it this way(i.e. applying the rotating-wave approximation first). However I would really like to know how Foot got to this equation $$i\dot{c_1}=c_2(d^{i(\omega-\omega_0)t}+e^{-i(\omega+\omega_0)t})\frac{\Omega}{‌​2}$$. He claims that he integrated the system of ODEs first before applying the rotating-wave approximation, which sounds a bit sus.
Jul
30
comment Derivation for 7.14 in Atomic Physics by Foot
@Nivalth Thanks for the comment. I tried the way neutrino did it. I also tried to do it by brute force. But the former does not give me the answer in the book. The later was a bit too complicated to work out.