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Quantum Computing

Questions tagged [qutip]

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For questions about code which makes some use of QuTiP (Quantum Toolbox in Python). It is an open-source software library for simulating the dynamics of closed and open quantum systems. Please don't use the programming tag unless you absolutely think it is related to your question. Basically, questions which involve calculating physical quantities, by doing numerical computations on a computer are suited for this tag.

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2votes
2answers
66views

I want to convert a Choi matrix into a corresponding set of Kraus operators.I start out from a numpy array representing the Choi matrix. I convert it to a QuTip Qobj object and then convert it to ...
1vote
0answers
86views

I have a composite quantum system with density matrixrho represented as a NumPy array of shape $(D,D)$, where $D = \prod_i d_i$ is the product of the dimensions of ...
Ceasar's user avatar
0votes
0answers
33views

The problem I am facing is that I have a circuit of n qutrit all starting in a pure state, after the application of some gates (that keeps states pure), my system will have a final state in the form ...
eddie felson's user avatar
0votes
0answers
31views

Im trying to replicate the plots from Fig.2 of the this paper https://arxiv.org/abs/1912.02977 using QuTip.I was able to replicate Fig.2(a) following the parameters specified in the paper$\Omega_{\...
RDKaizhar's user avatar
1vote
1answer
145views

I made a qubit simulation in qutip with dephasing and relaxation for a project but there's a problem in my t2 hahn echo simulation. The time I am obtaining is too short compared to the T2 parameter. ...
Zeor137's user avatar
1vote
1answer
105views

With NoiseModel in Qiskit we can add damping terms, for example throughthermal_relaxation_error. I'd like to know if there is a way to simulate Rabi oscillation at ...
1vote
0answers
50views

I am trying to simulate the evolution of a three-level system, using mesolve.Strangely, the state seems to "decohere" without any collapse operators involved.At the moment, I am just ...
danyudi's user avatar
2votes
0answers
419views

I'm trying to mix two states on a beam splitter whose unitary operator is$$\hat{U}=e^{i\theta \left( \hat{a}^†\hat{b} + \hat{a}\hat{b}^† \right)},$$where $\hat{a}$, $\hat{b}$ are annihilation ...
1vote
0answers
84views

I am transitioning from using Mathematica to Python for my work on quantum systems, specifically focusing on solving the Lindblad Master Equation. For this purpose, I've started using the mcsolve ...
1vote
1answer
100views

I'm a novice at qutip simulation.I was recently trying to use qutip to simulate the heating effect of a trapped ion by defining a jump operator defined with heating rate.Below is the code of my ...
1vote
0answers
58views

I am following the simple tutorial below:(https://nbviewer.org/urls/qutip.org/qutip-tutorials/tutorials-v5/time-evolution/003_qubit-dynamics.ipynb)In this they look at single qubit with Hamiltonian $...
1vote
3answers
246views

Suppose I instantiate a state with 4 qubits in their $|0\rangle$ state with qutip:from qutip import basis, tensorstate = tensor(*[basis(2,0)]*4)The output will ...
Ícaro Lorran's user avatar
2votes
2answers
479views

I am searching for a quantum package in Python that can enable me to calculate, for example, a density matrix symbolically and display the results in variable form rather than numerically. I am aware ...
physicino's user avatar
2votes
0answers
365views

I would like to study the effects of non-computational levels of two coupled qubits by a resonator using QuTiP. The idea is to consider the following HamiltoniansQubits Hamiltonian$$H_{q_i} = \...
Frostman's user avatar
2votes
1answer
476views

I have a qutip density matrixfullsystem for a system composed of two quantum systems with ...
Bebotron's user avatar

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