Quantum Circuits for Exact Unitary -Designs and Applications to Higher-Order Randomized Benchmarking

Y Nakata, D Zhao, T Okuda, E Bannai, Y Suzuki… - PRX Quantum, 2021 - APS
A unitary t-design is a powerful tool in quantum information science and fundamental
physics. Despite its usefulness, only approximate implementations were known for general t …

Subspace variational quantum simulator

K Heya, KM Nakanishi, K Mitarai, Z Yan, K Zuo… - arXiv preprint arXiv …, 2019 - arxiv.org
Quantum simulation is one of the key applications of quantum computing, which accelerates
research and development in the fields such as chemistry and material science. The recent …

Experimental demonstration of a high-fidelity virtual two-qubit gate

AP Singh, K Mitarai, Y Suzuki, K Heya, Y Tabuchi… - Physical Review …, 2024 - APS
We experimentally demonstrate a virtual two-qubit gate and characterize it using quantum
process tomography (QPT). The virtual two-qubit gate decomposes an actual two-qubit gate …

Subspace variational quantum simulator

K Heya, KM Nakanishi, K Mitarai, Z Yan, K Zuo… - Physical Review …, 2023 - APS
Quantum simulation is one of the key applications of quantum computing, which accelerates
research and development in the fields such as chemistry and material science. The recent …

Experimental computations of atomic properties on a superconducting quantum processor

AP Singh, K Sugisaki, S Prasannaa, BK Sahoo, BP Das… - Physical Review A, 2024 - APS
We experimentally compute relativistic and correlation effects in the atomic properties by
using a superconducting qubit processor. Specifically, we compute the relativistic ground …