Recent content by vtahmoorian

Good! but not exactly related to what I am looking for:s But thank you for your sharing

Hi everyone:) Is there anyone who has worked on the phenomena near the band edge of photonic crystals? for example spontaneous emission near the band edge? there are lots of articles specially from Sajeev John " spontaneous emission near the edge of a photonic band gap" Phys.Rev.A vol50 num 2...

Hi everyone I am working on entanglement between an atomic system and its spontaneous emission but I don't know how to connect this kind of entanglement with quantum computation, I have read in different articles that entanglement is somehow essential in applications like quantum communication...

Thank you dear Rubi I understand your first statement , it is related to the coherence condition,which is,having non zero off-diagonal elements of density matrix operator, right? but can you explain more about your second statement?

Thank you dear Greg for your comment, actually I started to study more about it and found that SGC happens when we are dealing with decays in an atom, when a three level Landa type atom (for example) decays to lower levels and the final state of the atom becomes a coherent superposition of...

Hi everyone I am investigating spontaneously generated coherence(SGC), I found that it happens when an excited atomic state decays to one or more closed atomic levels so that atom goes to a coherent superposition of states , Effect of State Superpositions Created by Spontaneous Emission on...

Hi everyone Is there anyone who can explain when does Spontaneously generated coherence(SGC) happen and how? Thank you in advance Vahideh

Thanks a lot for your time, I have now new insights on this context...and also thanks for the webpage address, Although I had seen this figure somewhereelse before, but this time with your explanation ,the figure made everything more tangible to me. Have a nice time

Sorry the source is "Optically controllable switch for light propagation based on triple coupled quantum dots" 10April 2014/Vol.53,NO.11/APPLIED OPTICS But still my question is there? that is:"Where does V(r) show up in our calculations? does it appear just in TA/TB calculations?" On the other...

Thank you Vanhees71 and thank you Cthugha too, regarding to your question Cthugha !actually in an article, I faced a Hamiltonian for a triple coupled QDs as below: H = H0 + H1 + H2 +H3 H0 = ℏωl0><0l+ ℏω1l1><1l+ ℏω2l2><2l+ ℏω3l3><3l; H1 = −ℏΩe−iωtl1><0l+H.c; H2 = P1εl0><1l+H.c; H3 =...

Hi everyone I am doing some researches on Quantum Dots and Quantum Wells, especially on their quantum optical properties such as nonlinear effects( refractive index, absorption) and also their interactions with deriving classical/ non classical fields and cavities .. but whenever it comes to...

If you consider pedestrians probabilistically, it means you should use statistical mechanics ; so that you can predict a specific pedestrian's motion based on how often it feels others' forces and from which direction , since these factors are probabilistic , seems you need to take a look at "...

Very good question Doofy! But as far as I understood from your explanation and question, you are taking just one oscillator in your mind, so by solving the eigenvalue problem, you found different possible states that Oscillator could take based on the number of times that (a†) operator...

Conservation energy says :" when there are not non conservative forces working on the system, mechanical energy which is the sum of kinetic and potential energies should stays unchanged" your first push gives the bead momentum, which is the root of its kinetic energy as well. so there is a bead...

a bead slides frictionlessly along a wire on a horizontal table?! is that what you mentioned? if it is so, then how will the energy be wasted and how is it not conserved? On the other hand , if you have taken it as an isolated system what is the origin of the gained energy? seems the only...