Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Bell Test Research Software and Data

Thank you for your interest in the data taken at NIST that was used to write our paper:

In the interest of being completely open and transparent, we have uploaded the data analyzed for our paper, the programs used to take the data, and the programs used to analyze the data. Because the paper was a collaboration between many people and institutions, the data and programs originate from many different computers. As a result, the code that appears in this repository may require modification to properly function on the data. We apologize in advance if there is missing meta-data to reproduce the analysis that is in our paper. Please let us know (belltest [at] (belltest[at]nist[dot]gov)) so that we can make the meta-data available for everyone via this repository. The content in this repository is a best effort collection of all the source code and data analyzed. Please realize that this will be a 'living repository' with updates to make the data more accessible for anyone who is interested.

Repository of Bell Test Research Software and Data >>


belltest [at] (L. K. Shalm, M. Stevens, S. Nam)
Single Photonics and Quantum Information Project


This research software and data ("belltestdata") are provided by NIST as a public service. You may use, copy and distribute copies of the software and data in any medium, provided that you keep intact this entire notice. You may improve, modify and create derivative works of the software or data or any portion of the software or data, and you may copy and distribute such modifications or works. Modified works should carry a notice stating that you changed the software or data and should note the date and nature of any such change. Please explicitly acknowledge the National Institute of Standards and Technology as the source of the software or data.The software/data is expressly provided "AS IS." NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED, IN FACT OR ARISING BY OPERATION OF LAW, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT AND DATA ACCURACY. NIST NEITHER REPRESENTS NOR WARRANTS THAT THE OPERATION OF THE SOFTWARE/DATA WILL BE UNINTERRUPTED OR ERROR-FREE, OR THAT ANY DEFECTS WILL BE CORRECTED. NIST DOES NOT WARRANT OR MAKE ANY REPRESENTATIONS REGARDING THE USE OF THE SOFTWARE/DATA OR THE RESULTS THEREOF, INCLUDING BUT NOT LIMITED TO THE CORRECTNESS, ACCURACY, RELIABILITY, OR USEFULNESS OF THE SOFTWARE/DATA.

You are solely responsible for determining the appropriateness of using and distributing the software or data and you assume all risks associated with its use, including but not limited to the risks and costs of program errors, compliance with applicable laws, damage to or loss of data, programs or equipment, and the unavailability or interruption of operation. This software or data is not intended to be used in any situation where a failure could cause risk of injury or damage to property. NIST shall not be liable for any damage that may result from errors or omissions in the software or data.

The software, data, and documentation were developed by NIST employees. NIST employee contributions are not subject to copyright protection within the United States.

Product Disclaimer

Certain trade names and company products are mentioned in the data and software to specify adequately the computer products and equipment needed to use this software. In no case does such identification imply endorsement by the National Institute of Standards and Technology of these computer products and equipment, nor does it imply that the products are necessarily the best available for the purpose.

Created December 23, 2015, Updated July 12, 2024