Kabgyun Jeong

We propose a fully operational framework to estimate the quantum umlaut information utilizing a quantum generative adversarial network. We introduce the measured quantum umlaut information and transform it into a min-max objective function suitable for near-term quantum devices. Crucially, we provide a strict mathematical guarantee, proving that the measured quantum umlaut information serves as an approximate of the exact quantum umlaut information.

Quantum supremacy poses that a realistic quantum computer can perform a calculation that classical computers cannot in any reasonable amount of time. It has become a topic of significant research interest since the birth of the field, and it is intrinsically based on the efficient construction of quantum algorithms. It has been shown that there exists an expeditious way to solve the noisy linear (or learning with errors) problems in quantum machine learning theory via a well-posed quantum sampling over pure quantum states. In this paper, we propose an advanced method to reduce the sample size in the noisy linear structure, through a technique of randomizing quantum states, namely, $\varepsilon$-random technique. Particularly, we show that it is possible to reduce a quantum sample size in a quantum random access memory (QRAM) to the linearithmic order, in terms of the dimensions of the input-data. Thus, we achieve a shorter run-time for the noisy linear problem.