Recent content by zxontt

The atoms in The atoms in these ultracold experiments are observed by imaging the atoms through a lens so as to determine their position. This is a quite hot topic recently, called quantum gas microscope. For example cf. this paper: Bakr, Waseem S., et al. "A quantum gas microscope for...

Thanks for the recommendation. I am having in mind small bunch of atoms like in ultracold-atom experiments where a very small number of atoms are trapped and observed.

Sorry for not having been more specific. I fully agree if the intensity is the quantity of interest, classical treatment would suffice. But actually I want to investigate the quantum mechanical measurement backaction of detection of single photons at the image screen back on the wave function of...

Usually the imaging through lens is described using geometrical optics or wave optics. However, I wish to study some imaging processes through lens where the light intensity is at the single photon level, under which condition I think the correct description should use a quantized...

Thanks a lot!

I did a very crude estimation to convince myself of ##d\cdot |A|/\hbar \ll 1## and so that ##T \approx 1##: I took the dipole moment to be that of a typical atom, approximately ##2 e a_0 \approx 1.6 \times 10^{-29} C \cdot m## (where ##e## is the elementary charge and ##a_0## the bohr radius)...

I am reading Cohen-Tannoudji's Atom photon interactions (2004 version), in the Appendix he explains that for atom-light interaction, the electric dipole Hamiltonian (d.E form) is got from the original, "physical" (in line with his language) p.A form Hamiltonian by a time-independent unitary...

Cthugha, thank you for your answer. They are very clear though I find the picture that follows from it are really amazing. I can understand that "the prerequisite for observing two-photon interference is of course that the two photons must overlap at the beam splitter". Also, I can understand...

I saw in a recent review paper- Engineered quantum dot single-photon sources (Rep. Prog. Phys. 75 (2012))- a discussion about how a "timing jitter" problem lead to reduced indistinguishability of single photons, which I find very hard to understand. According to the paper, for quantum-dot-based...

My friend is trying to reproduce a research paper calculated using the CFD(computational fluid dynamics) software package star-CD sold by CD-adapco, but so far he failed, what can he do? Here is the paper he is trying to reproduce: Endothelial Cell Layer Subjected to Impinging Flow Mimicking...