Questions tagged [quantum-computing]
For questions about how quantum computing algorithms/technology can be applied to problems of materials modeling.
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Is a D-Wave quantum computer able to do TD-DFT calculations?
I was reading this paper (Computing molecular excited states on a D‑Wave quantum annealer) and wondering if I can make a QUBO model for the equations used in the TD-DFT energy calculation for the ...
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How realistic is the use of classical analog electronic computers in solving the Schrödinger, Hartree-Fock, and Kohn-Sham equations?
Classical binary computer
The classical binary computers, on which a Hartree-Fock (or density functional theory) calculation can be executed, already allows seeing a limit in their progress, mainly in ...
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What is the ibrav value of a rhombohedral structure? [closed]
I have a rhombohedral structure
The SYSTEM and CELL_PARAMETERS blocks looks like this:
&SYSTEM
ibrav = 0
A = 6.058435171
...
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Is there any useful application to estimating the expectation value for an Ising model without magnetic field?
In the same line of thoughts as this post, I am trying to understand better in which cases quantum computers could be useful to simulate materials under some constraints on what the quantum computer ...
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Are there interesting applications of estimating the energy for generalizations of the Heisenberg model?
I consider that $H$ is a Hamiltonian describing a quantum system of $n$ spin-1/2 particles (or qubits). I assume it can be written as (the $\alpha_k^i$ are real coefficients):
$$\tag{1}H=\sum_{i=1}^3 ...
7
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How to solve time-dependent Schrodinger equation and plot trajectory on Bloch sphere?
Let's say I have a $2 \times 2$ Hamiltonian that I am solving using the time-dependent Schrodinger equation:
$$
i \frac{d}{dt} |{\Phi}\rangle=H|{\Phi}\rangle.\tag{1}
$$
Consider a generic Hamiltonian
$...
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Molecular orbitals and active space
During the same minute as asking this question, I also asked this at Quantum Computing SE.
In Qiskit, each qubit corresponds to one spin orbital. For example, the $\ce{N2}$ molecule would have 10 ...
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How does the recent Chinese quantum supremacy claim compare with Google's?
Very recently, China claims achieving 'Quantum Supremacy' with the world's fastest Quantum Computer. Their computer was designed as a circuit of lasers, beam splitters and mirrors (see figure bellow) ...
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The correlation energy from frozen natural orbtials (FNOs) using CCSD and MPBT(2)?
In other works and from the paper: Scaling Up Electronic Structure Calculations on Quantum Computers: The Frozen Natural Orbital Based Method of Increments.
I have seen that the corrected CCSD ...
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What class of materials are closest to realizing the tunable coupling Hamiltonian?
From a physics point of view, there is an effective (approximation to second-order coupling Jaynes-Cummings) Hamiltonian of the form [1]
\begin{equation}
H=\sum_j\omega_j(t)\sigma_j^z+\sum_{\langle i,...
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How are quantum computers being used in drug design? [closed]
A biomaterials question this time. How are quantum computers being used in drug discovery and design?
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How can quantum computing accelerate materials modeling?
Materials modeling is very computationally intensive and first-principles simulation of a real system of reasonable size typically involves the use of classical supercomputers.
How can quantum ...
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