Approaching Tsirelson's Bound in a Photon Pair Experiment
Abstract
We present an experimental test of the Clauser-Horne-Shimony-Holt Bell inequality on photon pairs in a maximally entangled state of polarization in which a value S =2.82759 ±0.00051 is observed. This value comes close to the Tsirelson bound of |S |≤2 √{2 } , with S -2 √{2 }=0.00084 ±0.00051 . It also violates the bound |S |≤2.82537 introduced by Grinbaum by 4.3 standard deviations. This violation allows us to exclude that quantum mechanics is only an effective description of a more fundamental theory.
- Publication:
-
Physical Review Letters
- Pub Date:
- October 2015
- DOI:
- 10.1103/PhysRevLett.115.180408
- arXiv:
- arXiv:1506.01865
- Bibcode:
- 2015PhRvL.115r0408P
- Keywords:
-
- 03.65.Ud;
- 03.65.Ta;
- 03.67.-a;
- 42.50.Dv;
- Entanglement and quantum nonlocality;
- Foundations of quantum mechanics;
- measurement theory;
- Quantum information;
- Nonclassical states of the electromagnetic field including entangled photon states;
- quantum state engineering and measurements;
- Quantum Physics
- E-Print:
- 4 pages, 2 figures, 1 number - updated error bars, references, and error discussion