• ABSTRACT – HUMANS DECISIONS ARE INDEPENDENT FROM QUANTUM SYSTEMS

The experiment at the University Nice Sophia Antipolis / CNRS (France) is based on a Sagnac-type source generating pairs of entangled photons (light particles). The twin photons are separated and each of them is sent to one user, say Alice and Bob. The Bellsters control the very way questions are asked to those photons. If it happens, by chance, that both photons are submitted to the same question, both should always provide the same answer, that is to say correlated. In other words, such correlated randomness established at remote locations is the signature of the existence entanglement and, more strikingly, that the Bellsters do not influence the obtained results.

• FACTS
  • Three days before the D-day of the Big Bell Test, the air conditioning system of the entire institute actually failed! The technician from the university maintenance service came immediately (which is great), climbed to the roof where the main system is, had a look at it, then looked at us, and said: “I have no idea what to do!!” Here we believe that the next worldwide experiment should be the Big Murphy’s Law Test!
  • On the other hand, Nice is recognized to be the warmest city in France during autumn and winter seasons. The Nice team had, however, never felt so cold compared to the night of the Big Bell Test due to an amazingly efficient air conditioning system!!
  • The 1st of January 2017, the LPMC-Nice will be renamed “Institut de Physique de Nice” (Nice Institute of Physics), with the amazing acronym InΦnI, which is a palindrome :)) The members of the Nice team actually believe that, with the Big Bell Test, they are already on the good rails towards reaching InΦnI-ty!!
  • As all physics teams, the Nice team members have internal private jokes. Following the very arrival date of Tom Lunghi in the team, a period during which nobody knew him really much, a recurrent joke came out, which is to ask the question : “Where is Tom Lunghi ?”, even if he is in the same place as the others, and then the others answer: “Who ?” During the night of the Big Bell Test, at the very moment the university web-server failed, the same question was asked, this time in a pertinent manner: “Where is Tom?”. The answer was then: “God, he is at home, sleeping!!”. Another comment came subsequently: “Oh my Gosh, we are in the very s¨¨¨” then!!”.

1. Name of lab:

Institut de Physique de Nice (InPhyNi)

2. Team:

Florian Kaiser, Tommaso Lunghi, Gregory Sauder, Panagiotis Vergyris, Olivier Alibart, and Sébastien Tanzilli (PI)

3. Organization:

Université Côte d’Azur / CNRS

4. City:

Nice

5. GPS coordinates of the experiment:

43º 42’ 57.8’’ N, 7º 15’ 53.1’’ E.

6. Name of the experiment:

Telecom compliant source of polarization entangled photons for the violation of Bell inequalities driven by human-generated random numbers

7. Target Bell inequality and experimental result obtained:

CHSH (Clauser-Horne-Shimony-Holt): local realism implies |S|≤2. We obtained a value for S of 2.431±0.003, which corresponds to a violation of the inequality by more than 140 standard deviations.

8. What did the experiment test?

The existence of correlations that cannot be explained by any theory that respects local realism.

8. Physical system used:

Photons.

10. Degree of freedom measured:

Polarization.

11. Rate of bits consumed & total number of bits:

Total number of exploited random bits: 2·19.5∙10^6Total number of coincidences: 2.9∙10^6

12. What was the use of the bits of the Bellsters?

The bits generated by the Bellsters have been sent to the lab in Nice in order to change the polarization state of Alice’s and Bob’s photons. Physically, this has been implemented by electro-optic phase modulators, similar to the ones that are used for today’s fibre internet. In more details, when Alice’s bit was “0” or “1”, the voltage applied at the Alice’s electro-optic modulator was set to be equal 0 Volts and 2.4 Volts, respectively. This changes the birefringence of the EOM and therefore rotates the photon polarisation state by 0° or 45°, respectively. At Bob’s site, for a bit of “0” or “1”, the voltage applied at Bob’s electro-optic modulator was set to be 1.2 Volts or 3.6 Volts, respectively, therefore rotating the polarisation state by 22.5° or 67.5°, respectively.

13. How long did the experiment take?

The experiment started on 30.11.2016 at 11:09 AM and ended on 01.12.2016 at 12:10 PM, corresponding to a total time duration of 25 hours.

14. Did you use all the bits in real time?

Most of the bits that have been received in Nice have been used within 1 second upon arrival. In case of network problems, we had also stored several previously user generated random bits as backup on our computer’s hard-disk drive to avoid that the experiment stops running.

15. Distance between Alice and Bob:

The distance from the photon pair source to Alice/Bob is about 15 metres in optical fibres, corresponding to 3 metres in physical distance. Alice and Bob are separated by approx. 35 metres of optical fibre, corresponding to approx. 5 metres in physical distance.