论文标题
实践中的量子量：用户可以从NISQ设备期望什么
Quantum Volume in Practice: What Users Can Expect from NISQ Devices
论文作者
论文摘要
量子体积（QV）已成为量化嘈杂中间尺度量子（NISQ）设备能力的事实标准基准。尽管NISQ提供商经常为其系统报告QV值，但我们对IBM Q，IONQ，INQ，RIGETTI，OXFORD量子电路和Quantinuum（以前是Honeywell）目前提供的24个NISQ设备进行了自己的QV计算。我们的方法表征了这些NISQ设备的高级用户可以通过合理的优化实现的性能，但没有对设备的白色框访问。特别是，我们使用可用的编译器优化例程将QV电路编译为供应商的标准门集，并在不同的量子组中执行实验。我们发现，运行QV测试需要非常重要的汇编周期，在我们的测试中实现的QV值通常落后于官方报告的结果，并且也很大程度上取决于所投资的经典汇编工作。
Quantum volume (QV) has become the de-facto standard benchmark to quantify the capability of Noisy Intermediate-Scale Quantum (NISQ) devices. While QV values are often reported by NISQ providers for their systems, we perform our own series of QV calculations on 24 NISQ devices currently offered by IBM Q, IonQ, Rigetti, Oxford Quantum Circuits, and Quantinuum (formerly Honeywell). Our approach characterizes the performances that an advanced user of these NISQ devices can expect to achieve with a reasonable amount of optimization, but without white-box access to the device. In particular, we compile QV circuits to standard gate sets of the vendor using compiler optimization routines where available, and we perform experiments across different qubit subsets. We find that running QV tests requires very significant compilation cycles, QV values achieved in our tests typically lag behind officially reported results and also depend significantly on the classical compilation effort invested.
