Published August 5, 2021
| Version v1
Journal article
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Error-Detected State Transfer and Entanglement in a Superconducting Quantum Network
Creators
- 1. Yale University
- 2. University of Chicago
Description
Microwave photons are used to wire up modular quantum processors, but mitigating the effects of loss between modules remains a crucial challenge. We use a low-loss bus resonator to couple bosonic qubits across a superconducting network with protocols made robust to photon loss in the bus. We transfer a multiphoton qubit and track loss events, improving the fidelity to the break-even point with respect to the best uncorrectable encoding. We also demonstrate a entanglement protocol using Hong-Ou-Mandel interference and error detection to prepare a two-photon Bell state with fidelity 94% and success probability 0.79, halving the error obtained with a single photon. This network link also presents new opportunities for resource-efficient direct gates between modules.
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PRXQuantum.2.030321.pdf
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Additional details
Identifiers
- DOI
- 10.1103/PRXQuantum.2.030321
- Other
- oai:uchicago.tind.io:11510
Funding
- U.S. Army Research Office
- W911NF-18-1-0212
- U.S. Army Research Office
- W911NF-16-1-0349
- Air Force Office of Scientific Research
- FA9550-15-1-0015
- Packard Foundation
- 2013-39273
- Alexander von Humboldt Foundation
- Max Planck Research Award
- Yale University