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SpacePulse: Combining Parameterized Pulses and Contextual Subspace for More Practical VQE

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arxiv 2311.17423 v1 pith:WZZGAD75 submitted 2023-11-29 quant-ph

classification quant-ph
keywords quantumpulsescontextualparameterizedspacepulsesubspacetraditionalaccess
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In this paper, we explore the integration of parameterized quantum pulses with the contextual subspace method. The advent of parameterized quantum pulses marks a transition from traditional quantum gates to a more flexible and efficient approach to quantum computing. Working with pulses allows us to potentially access areas of the Hilbert space that are inaccessible with a CNOT-based circuit decomposition. Compared to solving the complete Hamiltonian via the traditional Variational Quantum Eigensolver (VQE), the computation of the contextual correction generally requires fewer qubits and measurements, thus improving computational efficiency. Plus a Pauli grouping strategy, our framework, SpacePulse, can minimize the quantum resource cost for the VQE and enhance the potential for processing larger molecular structures.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Simulating the Antiferromagnetic Heisenberg Model on a Spin-Frustrated Kagome Lattice with the Contextual Subspace Variational Quantum Eigensolver

    quant-ph 2025-06 conditional novelty 6.0 of 10

    Using contextual subspace reduction and DMRG-biased stabilizers, a 5-qubit VQE on IBM hardware estimated the Kagome Heisenberg ground state with 0.019% relative error.

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