Quantum is now listed in the Web of Science, the possibly most widely used proprietary citation indexing service.
Quantum enters the Emerging Sources Citation Index (ESCI) of the Web of Science Core Collection, this means that it is now possible for users of the Web of Science to track citations to publications in Quantum on the article and journal level. Every paper published in Quantum, including all papers since we began publishing, will be indexed, all references will be captured, and citations to articles in Quantum will be displayed as the times cited count.
The gathered data will, along with other criteria, be used in the Journal Selection Process of Clarivate Analytics (previously part of Thomson Reuters) for the more narrowly defined Science Citation Index Expanded. Journals can enter this more selective index, for which also an official impact factor is calculated, only after at least two years of publication activity. No Journal Impact Factor metrics for journals covered in the Emerging Sources Citation Index are computed.