Shadow Simulation of Quantum Processes
We introduce the task of shadow process simulation, where the goal is to simulate the estimation of the expectation values of arbitrary quantum observables at the output of a target physical process. When the sender and receiver share random bits or other no-signaling resources, we show that the performance of shadow process simulation exceeds that of conventional process simulation protocols in a variety of scenarios including communication, noise simulation, and data compression. Remarkably, we find that there exist scenarios where shadow simulation provides increased statistical accuracy without any increase in the number of required samples.
Authors
- Giulio Chiribella (ORCID: https://orcid.org/0000-0002-1339-0656)
- Xuanqiang Zhao (ORCID: https://orcid.org/0000-0002-6003-5489)
- Xin Wang (ORCID: https://orcid.org/0000-0002-0641-3186)
Institutions
- Perimeter Institute (CA)
- University of Oxford (GB)
- University of Hong Kong (HK)
Publication Details
- Journal
- Physical Review Letters
- Published
- 2024-09-19
- DOI
- https://doi.org/10.1103/physrevlett.133.120804
- Citations
- 4
- Primary Topic
- Quantum Information and Cryptography
- Type
- article
- Field-Weighted Citation Impact
- 1.39
Funders
- John Templeton Foundation
- Innovation, Science and Economic Development Canada
- Government of Canada
- Ministry of Science and Technology of the People's Republic of China
- Ontario Ministry of Research, Innovation and Science
- Hong Kong University of Science and Technology
- Bureau of Education of Guangzhou Municipality
- National Key Research and Development Program of China