Data reuse Please cite G. Weihs et al., Phys. Rev. Lett. 81, 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. Data description 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. 81, 5039 (1998) and T. Jennewein et al. Phys. Rev. Lett. 85, 4729 (2000). The former is cited in the 2022 Nobel Prize announcement. Data format 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 10-10seconds, 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. Files and folders Folder Name Description Mode Start Date 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

{"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)."]}