Scimago Journal & Country Rank

npj Quantum Informationopen access


United Kingdom

Universities and research institutions in United Kingdom

Subject Area and Category


Nature Partner Journals



Publication type








How to publish in this journal


The scope of npj Quantum Information spans across all relevant disciplines, fields, approaches and levels and so considers outstanding work ranging from fundamental research to applications and technologies. Fields covered include, but are not limited to, quantum computing and quantum communication, including solid state and optical devices, superconducting circuits, atomic and ion trap systems, topological quantum computing, atomic defects in solids, hybrid quantum circuits, cavity quantum electrodynamics, superconducting resonators, optical cavities, mechanical systems, single photon sources and detectors, engineering approaches for scale-up, quantum metrology, quantum sensing, quantum control, quantum networks, quantum error correction, architectures and quantum algorithms. Join the conversation about this journal

The set of journals have been ranked according to their SJR and divided into four equal groups, four quartiles. Q1 (green) comprises the quarter of the journals with the highest values, Q2 (yellow) the second highest values, Q3 (orange) the third highest values and Q4 (red) the lowest values.

Computational Theory and Mathematics2016Q1
Computational Theory and Mathematics2017Q1
Computational Theory and Mathematics2018Q1
Computational Theory and Mathematics2019Q1
Computational Theory and Mathematics2020Q1
Computational Theory and Mathematics2021Q1
Computer Networks and Communications2016Q1
Computer Networks and Communications2017Q1
Computer Networks and Communications2018Q1
Computer Networks and Communications2019Q1
Computer Networks and Communications2020Q1
Computer Networks and Communications2021Q1
Computer Science (miscellaneous)2016Q1
Computer Science (miscellaneous)2017Q1
Computer Science (miscellaneous)2018Q1
Computer Science (miscellaneous)2019Q1
Computer Science (miscellaneous)2020Q1
Computer Science (miscellaneous)2021Q1
Statistical and Nonlinear Physics2016Q1
Statistical and Nonlinear Physics2017Q1
Statistical and Nonlinear Physics2018Q1
Statistical and Nonlinear Physics2019Q1
Statistical and Nonlinear Physics2020Q1
Statistical and Nonlinear Physics2021Q1

The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.

Total Documents

Evolution of the number of published documents. All types of documents are considered, including citable and non citable documents.

Citations per document

This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.

Cites per documentYearValue
Cites / Doc. (4 years)20150.000
Cites / Doc. (4 years)20165.300
Cites / Doc. (4 years)20177.771
Cites / Doc. (4 years)20189.476
Cites / Doc. (4 years)20199.087
Cites / Doc. (4 years)20208.868
Cites / Doc. (4 years)20219.810
Cites / Doc. (3 years)20150.000
Cites / Doc. (3 years)20165.300
Cites / Doc. (3 years)20177.771
Cites / Doc. (3 years)20189.476
Cites / Doc. (3 years)20199.171
Cites / Doc. (3 years)20208.187
Cites / Doc. (3 years)20219.453
Cites / Doc. (2 years)20150.000
Cites / Doc. (2 years)20165.300
Cites / Doc. (2 years)20177.771
Cites / Doc. (2 years)20189.962
Cites / Doc. (2 years)20197.935
Cites / Doc. (2 years)20207.583
Cites / Doc. (2 years)20219.780
Total Cites 

Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.

Self Cites20150
Self Cites20162
Self Cites201711
Self Cites201815
Self Cites201952
Self Cites202068
Self Cites2021106
Total Cites20150
Total Cites201653
Total Cites2017272
Total Cites2018597
Total Cites20191073
Total Cites20201662
Total Cites20212628
External Cites per Doc 
Cites per Doc

Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.

External Cites per document20150
External Cites per document20165.667
External Cites per document20177.676
External Cites per document20189.387
External Cites per document20198.726
External Cites per document20207.891
External Cites per document20219.105
Cites per document20150.000
Cites per document20165.300
Cites per document20177.771
Cites per document20189.476
Cites per document20199.171
Cites per document20208.187
Cites per document20219.453
% International Collaboration

International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.

YearInternational Collaboration
Citable documents 
Non-citable documents

Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.

Non-citable documents20150
Non-citable documents20161
Non-citable documents20171
Non-citable documents20181
Non-citable documents20190
Non-citable documents20201
Non-citable documents20211
Citable documents20150
Citable documents20169
Citable documents201734
Citable documents201862
Citable documents2019117
Citable documents2020202
Citable documents2021277
Cited documents 
Uncited documents

Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.

Uncited documents20150
Uncited documents20161
Uncited documents20174
Uncited documents20183
Uncited documents20197
Uncited documents202012
Uncited documents202114
Cited documents20150
Cited documents20169
Cited documents201731
Cited documents201860
Cited documents2019110
Cited documents2020191
Cited documents2021264
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