Realizing topologically ordered states on a quantum processor
K. J. Satzinger, Y.-J. Liu, A. Smith · Large collaboration (~80 authors), Google Quantum AI and collaborators.
Summary
Using a superconducting quantum processor, the team prepared the ground state of the toric code, a paradigmatic topologically ordered state, on a 2D lattice of qubits. They demonstrated the topological nature of the state by creating and braiding anyonic excitations and measuring nontrivial topological entanglement entropy. The work showed that programmable quantum hardware can realize and probe states with intrinsic topological order.
Key findings
- Prepared a toric-code ground state with topological order on a superconducting qubit array
- Created, moved, and braided emergent anyon excitations to verify topological properties
- Measured topological entanglement entropy consistent with the expected nontrivial value
Subjects & keywords
Cite this paper
K. J. Satzinger, Y.-J. Liu, & A. Smith [Large collaboration (~80 authors), Google Quantum AI and collaborators.] (2021). Realizing topologically ordered states on a quantum processor. Science. https://doi.org/10.1126/science.abi8378
@article{satzinger2021realizing,
author = {K. J. Satzinger and Y.-J. Liu and A. Smith and {Large collaboration (~80 authors), Google Quantum AI and collaborators.}},
title = {Realizing topologically ordered states on a quantum processor},
journal = {Science},
year = {2021},
doi = {10.1126/science.abi8378},
url = {https://doi.org/10.1126/science.abi8378}
}