Invited Talk I
Prof. Keisuke Fujii
Osaka University, Japan
The Status and Potential of Quantum Computers: From Quantum Computational Supremacy to Fault-Tolerant Quantum Computer
Abstract
Supported by extensive experimental efforts for the realization of quantum computing devices, a quantum computer of a hundred qubits is now within reach. This level of a quantum computer is not enough for fully-fledged fault-tolerant quantum computing, which is inevitable for large-scale quantum computing supporting theoretically proven exponential computational speedup. However, state-of-the-art quantum computers still are thought to have a computational advantage against classical computers for certain tasks and called noisy intermediate-scale quantum (NISQ) devices. In this talk, I will provide an overview of the NISQ devices and their applications for quantum simulation and machine learning. In addition, I will show the prospects and challenges for the realization of a fault-tolerant quantum computer in the long term.