@article{Song:2022:1367-2630/ac94ef,
author = {Song, W and Lim, Y and Jeong, K and Lee, J and Park, JJ and Kim, MS and Bang, J},
doi = {1367-2630/ac94ef},
journal = {New Journal of Physics},
pages = {1--11},
title = {Polynomial T-depth quantum solvability of noisy binary linear problem: from quantum-sample preparation to main computation},
url = {http://dx.doi.org/10.1088/1367-2630/ac94ef},
volume = {24},
year = {2022}
}

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TY  - JOUR
AB  - The noisy binary linear problem (NBLP) is known as a computationally hard problem, and therefore, it offers primitives for post-quantum cryptography. An efficient quantum NBLP algorithm that exhibits a polynomial quantum sample and time complexities has recently been proposed. However, the algorithm requires a large number of samples to be loaded in a highly entangled state and it is unclear whether such a precondition on the quantum speedup can be obtained efficiently. Here, we present a complete analysis of the quantum solvability of the NBLP by considering the entire algorithm process, namely from the preparation of the quantum sample to the main computation. By assuming that the algorithm runs on 'fault-tolerant' quantum circuitry, we introduce a reasonable measure of the computational time cost. The measure is defined in terms of the overall number of T gate layers, referred to as T-depth complexity. We show that the cost of solving the NBLP can be polynomial in the problem size, at the expense of an exponentially increasing logical qubits.
AU  - Song,W
AU  - Lim,Y
AU  - Jeong,K
AU  - Lee,J
AU  - Park,JJ
AU  - Kim,MS
AU  - Bang,J
DO  - 1367-2630/ac94ef
EP  - 11
PY  - 2022///
SN  - 1367-2630
SP  - 1
TI  - Polynomial T-depth quantum solvability of noisy binary linear problem: from quantum-sample preparation to main computation
T2  - New Journal of Physics
UR  - http://dx.doi.org/10.1088/1367-2630/ac94ef
UR  - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000867378600001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://iopscience.iop.org/article/10.1088/1367-2630/ac94ef
UR  - http://hdl.handle.net/10044/1/100463
VL  - 24
ER  - 

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