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New theory quantifies information loss in quantum circuits

By PulseAugur Editorial · [1 sources] ·

Researchers have developed a theoretical framework to understand how information is lost in parameterized quantum circuits when using a fixed computational-basis measurement. They analyzed the quantum Fisher information, the full Fisher information in bitstring distributions, and the largest available response within a diagonal readout space. Their findings indicate that even with the full span of Pauli strings, a significant amount of information is lost, particularly as the circuit depth increases and the state-tangent frame approaches Haar randomness. AI

RANK_REASON The cluster contains a single academic paper published on arXiv. [lever_c_demoted from research: ic=1 ai=0.4]

Read on arXiv cs.LG →

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New theory quantifies information loss in quantum circuits

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The cluster contains a single academic paper published on arXiv. [lever_c_demoted from research: ic=1 ai=0.4]
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COVERAGE [1]

  1. arXiv cs.LG TIER_1 English(EN) · Marwan Ait Haddou ·

    Readout-Rank Laws for Isotropic Quantum Tangents

    arXiv:2608.07628v1 Announce Type: cross Abstract: Deep parameterized quantum circuits may remain sensitive to a parameter change while the observables retained by a learning model barely respond. We study this separation for a fixed computational-basis measurement. For a pure-sta…

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