Recent content by physicsclaus

The admin deleted my thread, they think I duplicate it. Actually, I am asking different question.

Yes, I know how to type latex here now. Do you think I should post somewhere else?

Hello everyone, I have posted a new thread about closely related to this, please check it out!

Step 5 - Apply a drive pulse to the qubit to flip the excited state back to the ground state, if and only if the cavity is in the ground state$$ \vert \Psi \rangle = \frac{1}{\sqrt{2}} [ \vert 2\alpha \rangle + \vert 0 \rangle ] \otimes \vert g \rangle$$I expect the state looks like Step 6...

Here is the state I got for my step 4. It is not what I expected. I hope someone can correct my working.

I state all the things once more for clarity # Parameters N = 30 # Hilbert-space cutoff, ideally infinite, but infinite is big wc = 2 * np.pi * 6.0 # cavity frequency, Grad/s wq = 2 * np.pi * 5.0 # qubit frequency, same as cavity # Initial state: cavity in ground state with qubit in...

[Mentor Note -- This thread is a continuation of a previous thread, with the emphasis in this new thread on the programming implementation. Previous thread is here: https://www.physicsforums.com/threads/can-anyone-give-me-the-details-of-creating-a-cat-state-in-circuit-qed.1048821/ ] Hello...

Thanks a lot for putting the source here for me!

Thank you so much for your information, however, my institution cannot access to this aps journal. The below review is quite comprehensive. I believe it's a good read, thanks a lot!

Thank you for your suggestion. I will make another post soon.

I think I have made a mistake in my above plots https://www.physicsforums.com/threads/can-anyone-give-me-the-details-of-creating-a-cat-state-in-circuit-qed.1048821/post-6840193 since I forgot to include 1/√ 2 to the states for normalisation. As the microwave resonator is coupled to the two...

I try to visualize how the states look like by using Qutip, still, I am not sure if it is correct. I think these graphs can help me check the results, but I have be certain the way I input the states are all correct. I hope someone can check it for me, thanks a lot!The installation is very easy...

I am so new to circuit quantum electrodynamics. As far as I know, there are few things I could manipulate, like resonator, qubit resonance frequencies, Hamiltonian, coupling strength, Hilbert-space cutoff, dissipation rate, but they do not make sense to me and I do not how they can relate to my...

Hello everyone, I have posted another question regarding the calculation of gating time, I hope someone can give me some guidance. I cannot find any way to do this calculation. https://www.physicsforums.com/threads/how-to-calculate-gating-time-from-the-rate-of-the-random-coincidence.1048708/

Hello everyone, I am now doing experiment related to quantum erasure. After plotting the correlation measurement with and without blocking one of the polarization from the SPDC source (say, V polarization), I do not know how to work further on the gating time from the rate of the random...