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Topic · Atomic and Molecular Physics, and Optics

Quantum Mechanics and Applications

Quantum Mechanics and Applications is a research topic within Atomic and Molecular Physics, and Optics. Science Explorer counts 52k research works in it since 1950. 10.0% of them reached the world's top 10% most cited for their field and year.

This cluster of papers explores the foundational aspects of quantum mechanics, including decoherence, Bell inequalities, quantum measurement, interpretations of quantum theory, weak values, entanglement, nonlocality, and the nature of quantum information. It delves into topics such as wave function collapse and quantum probabilities.

  • Decoherence
  • Bell Inequality
  • Quantum Measurement
  • Quantum Interpretations
  • Weak Values
  • Entanglement
  • Quantum Nonlocality
  • Quantum Information
  • Wave Function Collapse
  • Quantum Probabilities
Research works
52k
fractional, since 1950
In the world top 10%
5.2k
per year above
Top-10% rate
10.0%
share of its works in the world top 10%
Growth, 2018-21 → 2022-25
+23%
the tick is no change
Largest producer
United States
26% of the 10 largest, 2022-now
Quantum Mechanics and Applications

Which countries lead Quantum Mechanics and Applications research?

By volume, the United States and China publish the most (1.6k and 1.4k works in 2022-now).

By volume, 2022-now

  1. 1 United States 1.6k works
  2. 2 China 1.4k works
  3. 3 India 555 works
  4. 4 Germany 496 works
  5. 5 Italy 427 works
  6. 6 United Kingdom 420 works
  7. 7 France 299 works
  8. 8 Russia 274 works
  9. 9 Brazil 266 works
  10. 10 Japan 263 works

How concentrated that is

The same countries as shares of everything the list above accounts for. A node where two countries do two thirds of the work and one spread evenly across twelve read alike as a ranking and not at all alike here.

United States: 26.4%China: 24.0%India: 9.2%Germany: 8.2%6 others listed: 32.3%26%largest
United States1,591 · 26.4%China1,447 · 24.0%India555 · 9.2%Germany496 · 8.2%6 others listed1,948 · 32.3%

Shares of the rows listed above, not of the whole node.

Which institutions lead Quantum Mechanics and Applications research?

By volume in 2022-now, Centre National de la Recherche Scientifique publishes the most Quantum Mechanics and Applications research, followed by Russian Academy of Sciences and Chinese Academy of Sciences.

By volume, 2022-now

  1. 1 Centre National de la Recherche ScientifiqueFrance 125 works
  2. 2 Russian Academy of SciencesRussia 80 works
  3. 3 Chinese Academy of SciencesChina 75 works
  4. 4 Universidade Estadual Paulista (Unesp)Brazil 68 works
  5. 5 University of Science and Technology of ChinaChina 57 works
  6. 6 Max Planck SocietyGermany 52 works
  7. 7 Polish Academy of SciencesPoland 51 works
  8. 8 University of OxfordUnited Kingdom 42 works
  9. 9 Beijing University of Posts and TelecommunicationsChina 41 works
  10. 10 National University of SingaporeSingapore 40 works

Who are the leading researchers in Quantum Mechanics and Applications?

The most-cited researchers publishing on Quantum Mechanics and Applications include John P. Perdew, Karl John Friston and Kieron Burke.

  1. 1 John P. Perdew United States 436k citations
  2. 2 Karl John Friston United Kingdom 310k citations
  3. 3 Kieron Burke United States 276k citations
  4. 4 Donald G. Truhlar United States 230k citations
  5. 5 Kai You Wang China 224k citations

Ranked by citations received across their whole record, among researchers with at least three works on this topic.

What are the most cited papers in Quantum Mechanics and Applications?

The most cited paper in Quantum Mechanics and Applications is "Teleporting an unknown quantum state via dual classical and Einstein-Podolsky-Rosen channels" (Charles H. Bennett, Gilles Brassard, Claude Crépeau et al., 1993), with 13,933 citations. Next come "Information Theory and Statistical Mechanics" (13,114) and "On the Einstein Podolsky Rosen paradox" (12,389).

Most cited papers
#PaperReleasedCitations
1 Teleporting an unknown quantum state via dual classical and Einstein-Podolsky-Rosen channels Charles H. Bennett, Gilles Brassard, Claude Crépeau et al. · Physical Review Letters Open access 29 Mar 1993 13,933
2 Information Theory and Statistical Mechanics E. T. Jaynes · Physical Review 15 May 1957 13,114
3 On the Einstein Podolsky Rosen paradox James S. Bell · Physics Physique Fizika Open access Nov 1964 12,389
4 Quantum cryptography based on Bell’s theorem ARTUR K. EKERT · Physical Review Letters 5 Aug 1991 10,906
5 Quantum entanglement Ryszard Horodecki, Paweł Horodecki, Michał Horodecki et al. · Reviews of Modern Physics Open access 17 Jun 2009 10,241
All 100 most cited papers, with filters and sorting

Where is Quantum Mechanics and Applications research done?

The largest centres of Quantum Mechanics and Applications research in 2022-now are Beijing (China), Moscow (Russia), Paris (France) and Hefei (China). Among places with at least 20 works in it, it is an unusually large share of all research in Kalmar.

Largest cities, 2022-now

  1. 1 BeijingChina 311 works
  2. 2 MoscowRussia 136 works
  3. 3 ParisFrance 122 works
  4. 4 HefeiChina 106 works
  5. 5 TokyoJapan 96 works
  6. 6 São PauloBrazil 84 works
  7. 7 SingaporeSingapore 82 works
  8. 8 WarsawPoland 82 works
  9. 9 LondonUnited Kingdom 82 works
  10. 10 ViennaAustria 79 works

Where it is the local speciality

  1. KalmarSE · 26.6 works31×
← less than its size predicts1×more →

Location quotient: how much more of its research is in Quantum Mechanics and Applications than the world average.

See Quantum Mechanics and Applications on the map

Where is the best place to study Quantum Mechanics and Applications?

Among universities, judged by research, Universität Innsbruck, University of Vienna and Nanjing University of Posts and Telecommunications score highest, combining excellence, specialisation, size, growth and international reach. Research strength is one signal when choosing where to study; it does not measure teaching.

0%20%40%mean 24.47%fractional works in this field (log) →share of work in the world top 10% →Universität InnsbruckMassachusetts Instit…Nanjing University o…University of Vienna
above the meannear itbelow it

One dot per university in the first ten of the table below, at the default weights. The upper left is the interesting corner: small places doing unusually strong work.

Excellenceshare of its work in the world top 10%, 2022-now and all time averaged
40%
Specialisationhow much of its work is in this field, counted up to 10× the world share
10%
Sizeits output in this field, on a log scale
30%
Growthoutput growth, counted from -20% to +20%
10%
Internationalshare of its work with a co-author abroad
10%
Each slider sets a weight; the share it gets of the score is beside it.
#UniversityScoreTop 10%SpecialisationWorksGrowth
1Universität InnsbruckAustria 74.226.9%7.9×17 +16.2%
2University of ViennaAustria 73.817.6%9.9×38 +26.5%
3Nanjing University of Posts and TelecommunicationsChina 73.326.4%9.6×31 +56.0%
4Massachusetts Institute of TechnologyUnited States 72.126.5%6.5×34 +5.5%
5Universitat Politècnica de CatalunyaSpain 70.820.4%7.4×19 +30.0%
6University of Science and Technology of ChinaChina 69.824.7%6.4×57 -5.6%
7California Institute of TechnologyUnited States 67.426.9%6.7×18 +4.3%
8Delft University of TechnologyNetherlands 66.123.6%3.8×19 +17.6%
9Hefei UniversityChina 65.231.1%18.5×14 +907.1%
10University of GenevaSwitzerland 64.420.6%7.4×23 -25.7%

Universities only. The score blends excellence (40%), size (30%), specialisation (10%), growth (10%), international reach (10%), 2022-now; growth compares 2018-21 with 2022-25 and counts up to +20%, since a jump from a small base is mostly noise.

Every institution in Quantum Mechanics and Applications, country by country

Is Quantum Mechanics and Applications research growing?

Output in 2022-2025 was 23% higher than in 2018-2021, peaking in 2025. The fastest-growing topics are Quantum Mechanics and Applications.

still counting19801990200020102020
grewheldshrank

The same series as a ribbon: one cell per year, darker for more. The line above answers how much; this answers when.

Its share of all research

Growing output can still be a shrinking share: all of science grows. This is Quantum Mechanics and Applications as a percentage of every work published that year, 0.037% in 2024.

still counting0.050%0.10%Quantum Mechanics and Applications0.038% in 202519801990200020102020

Fractional works of Quantum Mechanics and Applications over all fractional works that year. How the balance of science has shifted.

How much of it reaches the world top 10%

Year by year.

still counting5%10%15%Quantum Mechanics and Applications10.5% in 2025200020102020

Of each year's works in it, the share that reached the world's 10% most cited for their field and year. A field is the world for its own topics, so there is no other line to hold it against.

Which topics inside it are moving

Growth and decline on one axis around a shared zero. Two lists side by side hide the thing that matters: whether the growth dwarfs the decline, or the other way round.

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