Purcell effect
E266668
The Purcell effect is a quantum electrodynamics phenomenon in which the spontaneous emission rate of an emitter is enhanced or suppressed by its surrounding electromagnetic environment, such as a resonant cavity.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Purcell effect canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T2421088 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Purcell effect Context triple: [Edward M. Purcell, knownFor, Purcell effect]
-
A.
Szilard–Chalmers effect
The Szilard–Chalmers effect is a nuclear chemistry phenomenon in which atoms that undergo neutron capture and become radioactive are chemically separated from their original, non-activated atoms due to recoil-induced disruption of their chemical bonds.
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B.
Kapitza–Dirac effect
The Kapitza–Dirac effect is a quantum phenomenon in which a beam of particles, such as electrons or atoms, is diffracted by a standing wave of light, demonstrating the wave-particle duality of matter.
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C.
Unruh effect
The Unruh effect is a predicted phenomenon in quantum field theory where an accelerating observer perceives what inertial observers consider vacuum as a warm bath of particles with a characteristic temperature.
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D.
Hanbury Brown and Twiss effect
The Hanbury Brown and Twiss effect is a quantum optical phenomenon in which correlations in the arrival times of identical particles, such as photons, reveal their underlying statistical and coherence properties.
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E.
Faraday effect
The Faraday effect is a magneto-optical phenomenon in which the polarization plane of light is rotated as it passes through a material under the influence of a magnetic field aligned with the direction of propagation.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Purcell effect Target entity description: The Purcell effect is a quantum electrodynamics phenomenon in which the spontaneous emission rate of an emitter is enhanced or suppressed by its surrounding electromagnetic environment, such as a resonant cavity.
-
A.
Szilard–Chalmers effect
The Szilard–Chalmers effect is a nuclear chemistry phenomenon in which atoms that undergo neutron capture and become radioactive are chemically separated from their original, non-activated atoms due to recoil-induced disruption of their chemical bonds.
-
B.
Kapitza–Dirac effect
The Kapitza–Dirac effect is a quantum phenomenon in which a beam of particles, such as electrons or atoms, is diffracted by a standing wave of light, demonstrating the wave-particle duality of matter.
-
C.
Unruh effect
The Unruh effect is a predicted phenomenon in quantum field theory where an accelerating observer perceives what inertial observers consider vacuum as a warm bath of particles with a characteristic temperature.
-
D.
Hanbury Brown and Twiss effect
The Hanbury Brown and Twiss effect is a quantum optical phenomenon in which correlations in the arrival times of identical particles, such as photons, reveal their underlying statistical and coherence properties.
-
E.
Faraday effect
The Faraday effect is a magneto-optical phenomenon in which the polarization plane of light is rotated as it passes through a material under the influence of a magnetic field aligned with the direction of propagation.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
physical phenomenon
ⓘ
quantum electrodynamics effect ⓘ |
| affects | spontaneous emission rate ⓘ |
| appliesTo |
atoms
ⓘ
color centers in solids ⓘ molecules ⓘ quantum dots ⓘ superconducting artificial atoms ⓘ |
| canCause |
enhancement of spontaneous emission
ⓘ
suppression of spontaneous emission ⓘ |
| concerns | emitter–environment interaction ⓘ |
| contrastedWith | free-space spontaneous emission ⓘ |
| dependsOn |
dipole orientation of emitter
ⓘ
emitter transition frequency ⓘ mode volume of cavity ⓘ quality factor of cavity ⓘ spatial overlap between emitter and cavity field ⓘ spectral overlap between emitter and cavity mode ⓘ |
| enables |
faster radiative decay
ⓘ
slower radiative decay ⓘ |
| field |
cavity quantum electrodynamics
ⓘ
quantum electrodynamics ⓘ quantum optics ⓘ |
| historicalDiscovery | mid-20th century ⓘ |
| mechanism | modification of local density of optical states ⓘ |
| namedAfter |
Edward Mills Purcell
ⓘ
linked to:
Edward M. Purcell
|
| occursIn |
electromagnetic cavity
ⓘ
microcavities ⓘ microwave cavity ⓘ nanophotonic structures ⓘ optical cavity ⓘ photonic crystals ⓘ plasmonic nanostructures ⓘ resonators ⓘ |
| quantifiedBy | Purcell factor ⓘ |
| relatedTo |
Fermi golden rule
ⓘ
cavity QED strong coupling regime ⓘ local density of states ⓘ |
| usedIn |
cavity-enhanced spectroscopy
ⓘ
control of radiative lifetimes ⓘ fluorescence enhancement ⓘ lasers ⓘ light-emitting diodes ⓘ quantum communication ⓘ quantum information processing ⓘ single-photon emitters ⓘ single-photon sources ⓘ solid-state qubits ⓘ superconducting qubits ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Purcell effect Description of subject: The Purcell effect is a quantum electrodynamics phenomenon in which the spontaneous emission rate of an emitter is enhanced or suppressed by its surrounding electromagnetic environment, such as a resonant cavity.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.