Which country is best at Atomic and Molecular Physics, and Optics research?

Subfield · Atomic and Molecular Physics, and Optics

Top Countries in Atomic and Molecular Physics, and Optics Research

United States ranks first in 2022-now, followed by China and Germany, out of 57 ranked countries.

Quality score: the square root of excellence (the share of works in the world top 10% against what the place's own topics predict, on English-language articles and reviews) times the square root of the journal factor (its papers in the Nature Index's selective journals against what its topics predict), times output to the power 0.3 times breadth (how much of the selected area it works in) to the power 0.25. Floor: 100 fractional works in this field.

Atomic and Molecular Physics, and Optics

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Ranked by research quality, 2022-now

#	Country	Score	Top-10% rate	Works	Citations	All time
1	United States	100.0	11.8%	23k	182k	#1
2	China	82.9	11.8%	42k	299k	#3
3	Germany	72.8	11.1%	9.2k	68k	#2
4	Switzerland	65.7	15.7%	1.7k	19k	#5
5	United Kingdom	60.2	12.1%	4.6k	35k	#6
6	France	55.7	8.7%	6.4k	39k	#4
7	Japan	51.9	7.0%	7.9k	44k	#8
8	Netherlands	48.6	14.2%	1.3k	13k	#7
9	Singapore	45.7	17.3%	921	11k	#15
10	Italy	43.0	10.5%	4k	27k	#11
11	Spain	40.7	10.7%	2.8k	19k	#9
12	Austria	38.5	13.5%	1k	9.2k	#10
13	Sweden	36.6	13.1%	1.1k	9k	#16
14	Israel	34.7	10.4%	1.3k	9.4k	#13
15	South Korea	33.0	10.1%	2.8k	18k	#17
16	Australia	31.4	13.0%	1.6k	13k	#14
17	Canada	29.9	9.3%	2.4k	15k	#12
18	Denmark	28.5	11.8%	707	5.4k	#18
19	India	27.2	5.7%	7.9k	34k	#21
20	Belgium	25.9	9.9%	848	5.2k	#20
21	Czechia	24.7	8.2%	956	5.5k	#23
22	Finland	23.5	11.0%	533	3.9k	#19
23	Poland	22.4	6.9%	1.9k	9.7k	#22
24	Norway	21.4	9.9%	373	2.4k	#26
25	Taiwan	20.4	6.4%	1.4k	6.3k	#25
26	Russia	19.4	3.2%	8.2k	24k	#24
27	Hungary	18.5	8.2%	486	2.8k	#29
28	Brazil	17.6	3.9%	1.9k	7.1k	#27
29	Portugal	16.7	8.0%	431	2.4k	#31
30	Ireland	15.9	8.9%	294	1.6k	#30
31	Chile	15.1	7.4%	368	1.9k	#33
32	South Africa	14.3	9.9%	283	1.9k	#38
33	Greece	13.5	7.3%	427	2k	#34
34	Türkiye	12.8	8.8%	1.3k	6.4k	#37
35	Saudi Arabia	12.1	12.0%	753	5k	#35
36	Iran	11.4	6.5%	1.6k	7.8k	#39
37	Bangladesh	10.7	10.8%	317	1.7k	#47
38	Argentina	10.0	4.4%	461	1.9k	#36
39	Romania	9.4	5.2%	372	1.5k	#43
40	Mexico	8.8	3.7%	973	3.5k	#41
41	United Arab Emirates	8.1	11.2%	204	1.1k	#45
42	Slovakia	7.6	4.9%	200	735	#44
43	Ukraine	7.0	2.3%	1k	2.2k	#49
44	Pakistan	6.4	10.1%	617	3.5k	#46
45	Colombia	5.8	5.5%	262	1.1k	#48
46	Bulgaria	5.3	4.4%	212	596	#55
47	Thailand	4.8	3.7%	215	756	#53
48	Egypt	4.3	11.6%	563	3.8k	#56
49	Uzbekistan	3.7	6.2%	304	1.1k	#68
50	Malaysia	3.2	5.1%	366	1.5k	#60
51	Armenia	2.8	4.5%	201	550	#59
52	Vietnam	2.3	3.3%	395	1.4k	#57
53	Algeria	1.8	5.4%	434	1.6k	#64
54	Morocco	133.7	10.2%	478	3k	#67
55	Indonesia	88.3	2.8%	327	744	#66
56	Belarus	43.8	2.1%	233	391	#63
57	Iraq	0.0	5.1%	432	1.4k	#69

countries ranked worldwide in Atomic and Molecular Physics, and Optics (57). rank on the quality score within the stated pool. The score track runs 0 to 100; the rate track carries no average mark, because the average differs by field (about 6% in Dentistry, 21% in Economics).

How spread out this pool is

Every row above on one axis, one tick each. Right is a higher score. A field where the top few are far clear of everyone and one that runs down evenly look identical as a table.

One bar per band of score, counting the rows on this page.

Ranked by volume, 2022-now

1 China 47k works
2 United States 26k works
3 Germany 10k works
4 India 9k works
5 Japan 8.8k works
6 Russia 8.8k works
7 France 7.1k works
8 United Kingdom 5.3k works
9 Italy 4.5k works
10 South Korea 3.2k works
11 Spain 3.1k works
12 Canada 2.7k works