Reproduce “Exponential quantum advantages for decoded quantum interferometry in the streaming setting” on OpenResearch

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About this paper

Kewen Wu, Guangxu Yang

The authors adapt decoded quantum interferometry to solve Hermite OPI in one streaming pass, encoding constraints in a quantum state and using decoding and Fourier interference to favor high-scoring polynomials. For every fixed approximation below 93.301%, the algorithm uses polylogarithmic space in the growing-ℓ regime. Classical algorithms need polynomial space above 75% for suitably few passes on specified hard instances; at or below 75%, classical matching bounds apply.

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