Experimentally Faking the Violation of Bell's Inequalities
Abstract
Entanglement witnesses such as Bell inequalities are frequently used to prove the nonclassicality of a light source and its suitability for further tasks. By demonstrating Bell inequality violations using classical light in common experimental arrangements, we highlight why strict locality and efficiency conditions are not optional, particularly in security-related scenarios.
- Publication:
-
Physical Review Letters
- Pub Date:
- October 2011
- DOI:
- 10.1103/PhysRevLett.107.170404
- arXiv:
- arXiv:1106.3224
- Bibcode:
- 2011PhRvL.107q0404G
- Keywords:
-
- 03.65.Ud;
- 03.67.Dd;
- 42.50.Dv;
- 85.60.Gz;
- Entanglement and quantum nonlocality;
- Quantum cryptography;
- Nonclassical states of the electromagnetic field including entangled photon states;
- quantum state engineering and measurements;
- Photodetectors;
- Quantum Physics
- E-Print:
- Added discussion of countermeasures, updated references. This version is published in Phys. Rev. Lett. 5 pages, 4 figures