论文标题
模拟量子仿真装置编码技术的比较
A Comparison of Encoding Techniques for an Analog Quantum Emulation Device
论文作者
论文摘要
量子计算机可以在某些任务中胜过古典计算机。但是，当前的量子计算机（例如破坏性和容错）以及其他缺点（例如可移植性和可访问性）仍然存在许多挑战。在这项研究中，我们通过实现一个模拟量子仿真装置（aqed）来避免这些问题，其中每个量子状态由唯一的模拟信号表示。可以做到这一点，因为以前证明，希尔伯特空间上的Hermitian操作不是量子系统独有的，也可以应用于形成希尔伯特空间的复杂信号的基础上。复杂信号基础的正交性可以通过将信号分开为频域或空间域来维持。我们研究了这两种方法并进行了比较。我们最终在180nm处理节点上实现了整个设备，并通过模拟Grover的搜索算法（GSA）和Quantum Fourier变换（QFT）来演示AQED的计算优势。我们还介绍了该设备实现的等效量子体积。
Quantum computers can outperform classical computers in certain tasks. However, there are still many challenges to the current quantum computers such as decoherence and fault tolerance, and other drawbacks such as portability and accessibility. In this study, we circumvent these issues by realizing an analog quantum emulation device (AQED) where each qubit state is represented by a unique analog signal. It is possible to do this because previously it was shown that Hermitian operations on a Hilbert space are not unique to quantum systems and can also be applied to a basis of complex signals that form a Hilbert space. Orthogonality of the complex signal basis can be maintained by separating the signals into the frequency domain or the spatial domain. We study both these approaches and present a comparison. We finally realize the entire device on a UMC 180nm processing node and demonstrate the computational advantage of an AQED by emulating Grover's search algorithm (GSA) and Quantum Fourier Transform (QFT). We also present the equivalent quantum volume achieved by this device.
