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Results tagged with vqe
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user 11697
For questions about the Variational Quantum Eigensolver, a quantum/classical hybrid algorithm that can be used to find eigenvalues of a (often large) matrix H. When this algorithm is used in quantum simulations, H is typically the Hamiltonian of some system. In this hybrid algorithm, a quantum subroutine is run inside of a classical optimization loop.
0
votes
1
answer
320
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Depth for UCC ansatz
I tried to understand the notion of depth vs Trotter step in a uccsd circuit for the vqe algorithm in qiskit (I use an older version, 0.15). …
2
votes
0
answers
27
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VQE on Qiskit: getting counts per Hamiltonian term
Consider a VQE calculation (using the QASM backend and on Qiskit) that involves a qubit Hamiltonian with, say, 5 terms. …
1
vote
1
answer
116
views
Qiskit: evaluating expectation value of S^2 operator
I am trying to obtain the expectation value of the S^2 operator with respect to VQE wave function in an older version of qiskit (0.26). …