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Coherent coupling of a superconducting flux qubit to an electron spin ensemble in diamond

Overview of attention for article published in Nature, October 2011
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About this Attention Score

  • In the top 25% of all research outputs scored by Altmetric
  • High Attention Score compared to outputs of the same age (95th percentile)
  • Average Attention Score compared to outputs of the same age and source

Mentioned by

1 blog
17 tweeters
1 Facebook page
1 Google+ user
1 Redditor


314 Dimensions

Readers on

439 Mendeley
3 CiteULike
Coherent coupling of a superconducting flux qubit to an electron spin ensemble in diamond
Published in
Nature, October 2011
DOI 10.1038/nature10462
Pubmed ID

Xiaobo Zhu, Shiro Saito, Alexander Kemp, Kosuke Kakuyanagi, Shin-ichi Karimoto, Hayato Nakano, William J. Munro, Yasuhiro Tokura, Mark S. Everitt, Kae Nemoto, Makoto Kasu, Norikazu Mizuochi, Kouichi Semba


During the past decade, research into superconducting quantum bits (qubits) based on Josephson junctions has made rapid progress. Many foundational experiments have been performed, and superconducting qubits are now considered one of the most promising systems for quantum information processing. However, the experimentally reported coherence times are likely to be insufficient for future large-scale quantum computation. A natural solution to this problem is a dedicated engineered quantum memory based on atomic and molecular systems. The question of whether coherent quantum coupling is possible between such natural systems and a single macroscopic artificial atom has attracted considerable attention since the first demonstration of macroscopic quantum coherence in Josephson junction circuits. Here we report evidence of coherent strong coupling between a single macroscopic superconducting artificial atom (a flux qubit) and an ensemble of electron spins in the form of nitrogen-vacancy colour centres in diamond. Furthermore, we have observed coherent exchange of a single quantum of energy between a flux qubit and a macroscopic ensemble consisting of about 3 × 10(7) such colour centres. This provides a foundation for future quantum memories and hybrid devices coupling microwave and optical systems.

Twitter Demographics

The data shown below were collected from the profiles of 17 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 439 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United States 14 3%
United Kingdom 6 1%
Japan 5 1%
France 4 <1%
Germany 3 <1%
Austria 3 <1%
China 2 <1%
Spain 2 <1%
Canada 1 <1%
Other 3 <1%
Unknown 396 90%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 133 30%
Researcher 105 24%
Student > Master 43 10%
Student > Bachelor 33 8%
Professor 27 6%
Other 62 14%
Unknown 36 8%
Readers by discipline Count As %
Physics and Astronomy 323 74%
Engineering 33 8%
Materials Science 17 4%
Chemistry 8 2%
Computer Science 3 <1%
Other 11 3%
Unknown 44 10%

Attention Score in Context

This research output has an Altmetric Attention Score of 23. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 24 November 2011.
All research outputs
of 17,020,562 outputs
Outputs from Nature
of 78,202 outputs
Outputs of similar age
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Outputs of similar age from Nature
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Altmetric has tracked 17,020,562 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 94th percentile: it's in the top 10% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 78,202 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 89.2. This one has gotten more attention than average, scoring higher than 62% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 159,470 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 95% of its contemporaries.
We're also able to compare this research output to 1,013 others from the same source and published within six weeks on either side of this one. This one is in the 46th percentile – i.e., 46% of its contemporaries scored the same or lower than it.