A new VQE measurement protocol using hard-core bosonic approximations and iterative residual estimation reduces measurement counts and circuit depth by 30-80% for molecular systems.
Efficient quantum measurement of pauli operators in the presence of finite sampling error
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A gradient estimator for Lie-symmetric PQCs expresses the gradient as a linear combination of Hadamard-test expectations whose coefficients are estimated via shadow tomography, yielding logarithmic shot scaling.
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State Specific Measurement Protocols for the Variational Quantum Eigensolver
A new VQE measurement protocol using hard-core bosonic approximations and iterative residual estimation reduces measurement counts and circuit depth by 30-80% for molecular systems.
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Efficient Gradient Estimation for Parameterized Quantum Systems with Lie Algebraic Symmetries
A gradient estimator for Lie-symmetric PQCs expresses the gradient as a linear combination of Hadamard-test expectations whose coefficients are estimated via shadow tomography, yielding logarithmic shot scaling.