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Quantum computing 40 years later

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arxiv 2106.10522 v3 pith:OTT2AV3H submitted 2021-06-19 quant-ph

Quantum computing 40 years later

classification quant-ph
keywords feynmanquantumyearscomputerlaterarticleassessbuild
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Forty years ago, Richard Feynman proposed harnessing quantum physics to build a more powerful kind of computer. Realizing Feynman's vision is one of the grand challenges facing 21st century science and technology. In this article, we'll recall Feynman's contribution that launched the quest for a quantum computer, and assess where the field stands 40 years later.

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Cited by 5 Pith papers

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

  1. Maximal coherence of quantum measurement and the resource theory of sharpness

    quant-ph 2026-07 accept novelty 7.0

    Maximizing the distance-based coherence of a POVM over all unitary basis changes is proven to exactly equal its distance-based sharpness for POVMs with a common eigenbasis or common MUB structure.

  2. Tensor-Network-Based Distributed Quantum Dynamics on Independent Quantum Computers

    quant-ph 2026-06 unverdicted novelty 6.0

    Tensor-network decomposition converts entangled quantum wavepacket dynamics into independent lower-dimensional tasks executable asynchronously on distributed quantum hardware, demonstrated for vibrational spectra of a...

  3. Deterministic Ground State Preparation via Power-Cosine Filtering of Time Evolution Operators

    quant-ph 2026-02 unverdicted novelty 6.0

    A single-ancilla Power-Cosine QSP filter on time-evolution operators achieves deterministic many-body ground state preparation with exponential excited-state suppression and O(Δ^{-2} log(1/ε)) depth scaling.

  4. RELiQ: Scalable Entanglement Routing via Reinforcement Learning in Quantum Networks

    quant-ph 2025-11 unverdicted novelty 6.0

    RELiQ uses reinforcement learning with graph neural networks for local-information entanglement routing in quantum networks and outperforms existing local heuristics on random and real-world topologies while matching ...

  5. Variational Quantum Solutions to the Advection-Diffusion Equation for Applications in Fluid Dynamics

    quant-ph 2022-08 unverdicted novelty 4.0

    Hybrid variational quantum algorithm solves the advection-diffusion equation on small systems using current noisy IBM quantum hardware, with claimed logarithmic scaling in vector space dimension.