Implementation of Entanglement Witnesses with Quantum Circuits
Abstract Entanglement witnesses are economical tools for the experimental detection of quantum entanglement. Quantum algorithms for entanglement detection have recently attracted considerable attention. Based on block encoding techniques and state preparation methods, the implementation of several types of entanglement witnesses using quantum circuits without quantum state tomography is proposed. Further, explicit quantum circuits for the block encoding of some special matrices are presented.
Authors
- Shao‐Ming Fei
- Shu‐Qian Shen (ORCID: https://orcid.org/0000-0002-3768-6566)
- Ming Li (ORCID: https://orcid.org/0000-0001-9900-8018)
- Ruiqi Zhang (ORCID: https://orcid.org/0000-0002-5517-6789)
- Xiaoting Gao
Institutions
- China University of Petroleum, East China (CN)
- Capital Normal University (CN)
Publication Details
- Journal
- Advanced Quantum Technologies
- Published
- 2024-09-12
- DOI
- https://doi.org/10.1002/qute.202400272
- Primary Topic
- Quantum Information and Cryptography
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Shandong Province
- Fundamental Research Funds for the Central Universities