论文标题

连续变量出生的机器

A Continuous Variable Born Machine

论文作者

Čepaitė, Ieva, Coyle, Brian, Kashefi, Elham

论文摘要

生成建模已成为近期量子计算机的有前途的用例。特别是,由于量子力学的根本性概率性质,量子计算机自然建模和学习概率分布,也许比经典实现更有效。天生的机器是这种模型的示例,很容易在近期量子计算机上实现。但是,以其原始形式,天生的机器自然代表离散的分布。由于连续性质的概率分布在世界上很普遍,因此必须拥有一个可以有效代表它们的模型。文献中已经提出了一些建议,以补充具有额外功能的离散机器,以更轻松地学习连续分布,但是,所有这些都总是在一定程度上增加所需的资源。在这项工作中,我们介绍了连续变量诞生的机器,该机器构建在连续变量量子计算的替代体系结构上,该计算更适合以资源最少的方式对此类分布进行建模。我们提供数值结果,表明模型可以同时学习量子和经典连续分布,包括在存在噪声的情况下。

Generative Modelling has become a promising use case for near term quantum computers. In particular, due to the fundamentally probabilistic nature of quantum mechanics, quantum computers naturally model and learn probability distributions, perhaps more efficiently than can be achieved classically. The Born machine is an example of such a model, easily implemented on near term quantum computers. However, in its original form, the Born machine only naturally represents discrete distributions. Since probability distributions of a continuous nature are commonplace in the world, it is essential to have a model which can efficiently represent them. Some proposals have been made in the literature to supplement the discrete Born machine with extra features to more easily learn continuous distributions, however, all invariably increase the resources required to some extent. In this work, we present the continuous variable Born machine, built on the alternative architecture of continuous variable quantum computing, which is much more suitable for modelling such distributions in a resource-minimal way. We provide numerical results indicating the models ability to learn both quantum and classical continuous distributions, including in the presence of noise.

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