Violation of Bell's Inequality under Strict Einstein Locality Conditions
Authors/Creators
- 1. Universität Innsbruck
- 2. University of Waterloo
- 3. University of Calgary
- 4. Ludwig-Maximilians-Universität München
- 5. Universität Wien
Description
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 |
Files
Alice.zip
Additional details
Related works
- Is supplement to
- Journal article: 10.1103/PhysRevLett.81.5039 (DOI)
- Journal article: 10.1103/PhysRevLett.84.4729 (DOI)
- Book chapter: 10.1007/978-94-017-1454-9 (DOI)
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).