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X Demographics
Mendeley readers
Attention Score in Context
| Title |
Quantum-Enhanced Optical-Phase Tracking
|
|---|---|
| Published in |
Science, September 2012
|
| DOI | 10.1126/science.1225258 |
| Pubmed ID | |
| Authors |
Hidehiro Yonezawa, Daisuke Nakane, Trevor A. Wheatley, Kohjiro Iwasawa, Shuntaro Takeda, Hajime Arao, Kentaro Ohki, Koji Tsumura, Dominic W. Berry, Timothy C. Ralph, Howard M. Wiseman, Elanor H. Huntington, Akira Furusawa |
| Abstract |
Tracking a randomly varying optical phase is a key task in metrology, with applications in optical communication. The best precision for optical-phase tracking has until now been limited by the quantum vacuum fluctuations of coherent light. Here, we surpass this coherent-state limit by using a continuous-wave beam in a phase-squeezed quantum state. Unlike in previous squeezing-enhanced metrology, restricted to phases with very small variation, the best tracking precision (for a fixed light intensity) is achieved for a finite degree of squeezing because of Heisenberg's uncertainty principle. By optimizing the squeezing, we track the phase with a mean square error 15 ± 4% below the coherent-state limit. |
X Demographics
The data shown below were collected from the profiles of 10 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 2 | 20% |
| Mexico | 1 | 10% |
| Japan | 1 | 10% |
| Spain | 1 | 10% |
| United Kingdom | 1 | 10% |
| Unknown | 4 | 40% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 9 | 90% |
| Scientists | 1 | 10% |
Mendeley readers
The data shown below were compiled from readership statistics for 139 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 5 | 4% |
| China | 3 | 2% |
| Japan | 3 | 2% |
| Germany | 2 | 1% |
| United Kingdom | 2 | 1% |
| France | 1 | <1% |
| Italy | 1 | <1% |
| Austria | 1 | <1% |
| Unknown | 121 | 87% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 37 | 27% |
| Researcher | 36 | 26% |
| Student > Master | 10 | 7% |
| Professor | 8 | 6% |
| Professor > Associate Professor | 8 | 6% |
| Other | 27 | 19% |
| Unknown | 13 | 9% |
| Readers by discipline | Count | As % |
|---|---|---|
| Physics and Astronomy | 102 | 73% |
| Engineering | 10 | 7% |
| Agricultural and Biological Sciences | 4 | 3% |
| Chemistry | 4 | 3% |
| Neuroscience | 1 | <1% |
| Other | 3 | 2% |
| Unknown | 15 | 11% |
Attention Score in Context
This research output has an Altmetric Attention Score of 25. 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 15 August 2013.
All research outputs
#1,288,203
of 22,678,224 outputs
Outputs from Science
#21,474
of 77,822 outputs
Outputs of similar age
#8,121
of 170,728 outputs
Outputs of similar age from Science
#240
of 808 outputs
Altmetric has tracked 22,678,224 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 77,822 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 61.9. This one has gotten more attention than average, scoring higher than 72% 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 170,728 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 808 others from the same source and published within six weeks on either side of this one. This one has gotten more attention than average, scoring higher than 70% of its contemporaries.