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pre-commit-ci[bot]
2025-11-13 08:45:53 +00:00
parent d4ab3eba52
commit 24f25d813c
1 changed files with 4 additions and 2 deletions
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src/qibotn/backends/quimb.py
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@@ -210,7 +210,7 @@ def expectation_observable_symbolic(
This method takes a Qibo circuit, converts it to a Quimb tensor network circuit, and evaluates the expectation value This method takes a Qibo circuit, converts it to a Quimb tensor network circuit, and evaluates the expectation value
of a Hamiltonian specified by three lists of strings: operators, sites, and coefficients. of a Hamiltonian specified by three lists of strings: operators, sites, and coefficients.
The expectation value is computed by summing the contributions from each term in the Hamiltonian, where each term's The expectation value is computed by summing the contributions from each term in the Hamiltonian, where each term's
expectation is calculated using Quimb's `local_expectation` function. expectation is calculated using Quimb's `local_expectation` function.
Each operator string must act on all different qubits, i.e., for each term, the corresponding sites tuple must contain unique qubit indices. Each operator string must act on all different qubits, i.e., for each term, the corresponding sites tuple must contain unique qubit indices.
Example: operators_list = ['xyz', 'xyz'], sites_list = [(1,2,3), (1,2,3)], coeffs_list = [1, 2] Example: operators_list = ['xyz', 'xyz'], sites_list = [(1,2,3), (1,2,3)], coeffs_list = [1, 2]
@@ -301,7 +301,9 @@ def _qibo_circuit_to_quimb(
gate, "trainable", True gate, "trainable", True
) )
if is_parametrized: if is_parametrized:
circ.apply_gate(quimb_gate_name, *params, *qubits, parametrized=is_parametrized) circ.apply_gate(
quimb_gate_name, *params, *qubits, parametrized=is_parametrized
)
else: else:
circ.apply_gate( circ.apply_gate(
quimb_gate_name, quimb_gate_name,