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Quantum Random Walks Hit Exponentially Faster

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arxiv quant-ph/0205083 v1 pith:ZF2EOQ4B submitted 2002-05-14 quant-ph cs.CC

classification quant-phcs.CC
keywords quantumrandomtimehittingdiscretegivewalksalternative
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We show that the hitting time of the discrete time quantum random walk on the n-bit hypercube from one corner to its opposite is polynomial in n. This gives the first exponential quantum-classical gap in the hitting time of discrete quantum random walks. We provide the framework for quantum hitting time and give two alternative definitions to set the ground for its study on general graphs. We then give an application to random routing.

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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. Lazy Quantum Walks with Native Multiqubit Gates

    quant-ph 2025-11 unverdicted novelty 4.0 of 10

    Simulations of small lazy quantum walks on neutral atoms show a fidelity advantage for native multiqubit Rydberg gates over decomposed two-qubit sequences at certain gate-error regimes.

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