Experimentally Self-Testing Partially Entangled Two-Qubit States on an Optical Platform
Abstract
We demonstrate a complete and experimentally validated self-testing protocol for two-qubit partially entangled states, which avoids the need for full tomographic reconstruction. Using a room-temperature type-II PPKTP polarization-entangled source and a free-space optical setup, we implement both quantum state tomography and optimal generalized Bell measurements within a single system. Our approach achieves high-fidelity self-testing of non-maximally entangled states under black-box assumptions, establishing a solid foundation for device-independent quantum information processing applications.
Fields of Study & Subjects
Quantum Information and Cryptography
Quantum Computing Algorithms and Architecture
Quantum optics and atomic interactions
Publication details
- Journal / source
- Entropy
- Volume
- 28
- Issue
- 1
- Pages
- 79–79
- Publication date
- 9 January 2026
- Language
- EN