DOI: 10.5281/zenodo.7185334
title: Violation of Bell's Inequality under Strict Einstein Locality Conditions

description: <strong>Data reuse</strong> Please cite G. Weihs et al., Phys. Rev. Lett. <strong>81,</strong> 5039 (1998) in publications that reuse this data and if possible inform the lead author, who is always keen to learn what else one can do with the data. <strong>Data description</strong> The data contained in the two archives Alice.zip and Bob.zip and were collected in the years 1997 through 1999 as a long-distance test of Bell's inequality and quantum key distribution. Publications that are based on this data include G. Weihs et al., Phys. Rev. Lett. <strong>81,</strong> 5039 (1998) and T. Jennewein et al. Phys. Rev. Lett. <strong>85,</strong> 4729 (2000). The former is cited in the 2022 Nobel Prize announcement. <strong>Data format</strong> All files come in triplets for each observer (Alice, blue, west end of Innsbruck campus; Bob, red, east end of campus). Everything has been packed into an archive for each observer (alice.zip, bob.zip). *_H.txt Cryptic laboratory comments containing information about some unimportant(?) experimental parameters. *_V.dat Photon arrival times where the "arm" time has already been subtracted. IEEE-8bit double precision numbers in "Big Endian"-form naturally sorted ascendingly. Actual time resolution is 10<sup>-10</sup>seconds, but accuracy is only 0.5 ns. *_C.dat Apparatus setting and "outcome" for each photon detection encoded in the following way: 16-bit integers in "Big Endian"-form, each number showing the detector (0=vertical, 1=horizontal with repect to the polarizer) that fired in its LSB and the position of the switch (0=no rotation, 1=45° rotation) in the next to LSB. (Not very efficient, but quicker when sampling directly to the PCs RAM during data acquisition!) Somebody said that the bits must be reversed. I don't think so but there is always a chance that I made double, compensating mistakes in my LabView and C programming. <strong>Files and folders</strong> <strong>Folder Name</strong> <strong>Description</strong> <strong>Mode</strong> <strong>Start Date</strong> bellstat Static BI test (no fast switching) local, static 30-Nov-1997 bluesine Static correlation scan varying "blue" modulator bias local 30-Nov-1997 first local 28-Nov-1997 firstlong First run of long-distance (360m separation) measurements remote 28-Apr-1998 korrel localswitch local, switched (45°) 11-Jan-1998 locbell BI Test local, swiched (45°) 26-Mar-1998 loccorr Measurement of correlations in parallel bases local , switched (45°) 30-Mar-1998 longdist Main run of long-distance BI tests remote, switched (45°) 15-Apr-1998 longtime Maximum continous measurement time (about 5 minutes!) BI test remote, switched (45°) 06-Jun-1998 newlongtime remote, switched (45°) 22-Dec-1998 scanblue Scan varying "blue" side modulator bias remote, switched (45°) 01-May-1998 scanred Scan varying "red" side modulator bias remote, switched (45°) 31-May-1998 sineblue Scan varying "blue" side modulator bias local, switched (45°) 01-Apr-1998 sinered Scan varying "red" side modulator bias local, switched (45°) 30-Mar-1998 switchtest local, switched (45°) 03-Jan-1998 wignerscanalice Scan varying "blue"side modulator bias, basis choice for Wigner's inequality remote, switched (30°) 23-Dec-1998
description: {"references": ["G. Weihs, T. Jennewein, C. Simon, H. Weinfurter, and A. Zeilinger, Violation of Bell's inequality under strict Einstein locality conditions, Phys. Rev. Lett. 81, 5039 (1998)."]}