High Dimensional Quantum Machine Learning With Small Quantum Computers

Simon C. Marshall; Casper Gyurik; Vedran Dunjko

doi:10.22331/q-2023-08-09-1078

High Dimensional Quantum Machine Learning With Small Quantum Computers

Simon C. Marshall, Casper Gyurik, and Vedran Dunjko

Leiden University, Leiden, The Netherlands

Published:	2023-08-09, volume 7, page 1078
Eprint:	arXiv:2203.13739v4
Doi:	https://doi.org/10.22331/q-2023-08-09-1078
Citation:	Quantum 7, 1078 (2023).

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Abstract

Quantum computers hold great promise to enhance machine learning, but their current qubit counts restrict the realisation of this promise. To deal with this limitation the community has produced a set of techniques for evaluating large quantum circuits on smaller quantum devices. These techniques work by evaluating many smaller circuits on the smaller machine, that are then combined in a polynomial to replicate the output of the larger machine. This scheme requires more circuit evaluations than are practical for general circuits. However, we investigate the possibility that for certain applications many of these subcircuits are superfluous, and that a much smaller sum is sufficient to estimate the full circuit. We construct a machine learning model that may be capable of approximating the outputs of the larger circuit with much fewer circuit evaluations. We successfully apply our model to the task of digit recognition, using simulated quantum computers much smaller than the data dimension. The model is also applied to the task of approximating a random 10 qubit PQC with simulated access to a 5 qubit computer, even with only relatively modest number of circuits our model provides an accurate approximation of the 10 qubit PQCs output, superior to a neural network attempt. The developed method might be useful for implementing quantum models on larger data throughout the NISQ era.

► BibTeX data

@article{Marshall2023highdimensional,
  doi = {10.22331/q-2023-08-09-1078},
  url = {https://doi.org/10.22331/q-2023-08-09-1078},
  title = {High {D}imensional {Q}uantum {M}achine {L}earning {W}ith {S}mall {Q}uantum {C}omputers},
  author = {Marshall, Simon C. and Gyurik, Casper and Dunjko, Vedran},
  journal = {{Quantum}},
  issn = {2521-327X},
  publisher = {{Verein zur F{\"{o}}rderung des Open Access Publizierens in den Quantenwissenschaften}},
  volume = {7},
  pages = {1078},
  month = aug,
  year = {2023}
}

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