Quantum Physics: Planck Quanta to Photoelectric Effect & Entanglement
Encyclopedia/1. The Cosmos & The Natural World/2. Physics & Chemistry/01. Quantum Physics & Atomic Theory • Curated by Admin Timeline.sg
Quantum physics revolutionized our understanding of the subatomic world, from Planck's quanta in 1900 to modern quantum computing and entanglement. Key milestones include Einstein's photoelectric effect, Bohr's atom, Heisenberg's uncertainty principle, Schrödinger's equation, and Bell's theorem.
Chronological Storyline (40 Milestones)
Dec 14, 1900 CE
Planck Introduces Energy Quanta
Max Planck proposes that energy is emitted in discrete packets called 'quanta' to explain blackbody radiation, founding quantum theory. #physics #quantum
Planck Introduces Energy Quanta By Darth Kule - Own work, Public domain, https://commons.wikimedia.org/w/index.php?curid=10555337
Mar 18, 1905 CE
Einstein Explains Photoelectric Effect
Albert Einstein proposes that light consists of quanta (photons) to explain the photoelectric effect, later earning him the Nobel Prize. #physics #quantum
Einstein Explains Photoelectric Effect By Ponor - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=92684859
Jul 1, 1913 CE
Bohr Model of the Atom
Niels Bohr introduces a model of the hydrogen atom with quantized electron orbits, explaining spectral lines. #physics #quantum
Bohr Model of the Atom By JabberWok at English Wikipedia - Transferred from en.wikipedia to Commons., CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=2639910
Nov 1, 1924 CE
de Broglie Proposes Matter Waves
Louis de Broglie suggests that particles have wave-like properties, introducing wave-particle duality. #physics #quantum
Jul 1, 1925 CE
Heisenberg Develops Matrix Mechanics
Werner Heisenberg formulates matrix mechanics, the first complete quantum theory. #physics #quantum
Jan 1, 1926 CE
Schrödinger Equation Published
Erwin Schrödinger publishes his wave equation, providing a powerful tool for quantum mechanics. #physics #quantum
Mar 1, 1927 CE
Heisenberg Uncertainty Principle
Werner Heisenberg states the uncertainty principle, limiting simultaneous knowledge of position and momentum. #physics #quantum
Heisenberg Uncertainty Principle By Unknown author - This image was provided to Wikimedia Commons by the German Federal Archive (Deutsches Bundesarchiv) as part of a cooperation project. The German Federal Archive guarantees an authentic representation only using the originals (negative and/or positive), resp. the digitalization of the originals as provided by the Digital Image Archive., CC BY-SA 3.0 de, https://commons.wikimedia.org/w/index.php?curid=5436254
Oct 1, 1927 CE
Copenhagen Interpretation Formulated
Niels Bohr and Werner Heisenberg develop the Copenhagen interpretation, emphasizing wavefunction collapse and complementarity. #physics #quantum
Jan 1, 1928 CE
Dirac Equation Unifies QM and Relativity
Paul Dirac formulates the Dirac equation, predicting antimatter and merging quantum mechanics with special relativity. #physics #quantum
May 1, 1935 CE
Einstein-Podolsky-Rosen Paradox
Einstein, Podolsky, and Rosen argue that quantum mechanics is incomplete, introducing the EPR paradox. #physics #quantum
Einstein-Podolsky-Rosen Paradox By Doris Ulmann - This image is available from the United States Library of Congress's Prints and Photographs division under the digital ID cph.3g04940.This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing., Public domain, https://commons.wikimedia.org/w/index.php?curid=2468828
Aug 1, 1935 CE
Schrödinger's Cat Thought Experiment
Erwin Schrödinger proposes the cat paradox to illustrate quantum superposition and measurement. #physics #quantum
Schrödinger's Cat Thought Experiment By Dhatfield - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=4279886
1947 CE
Lamb Shift Discovered
Willis Lamb measures the Lamb shift, leading to the development of quantum electrodynamics. #physics #quantum
Lamb Shift Discovered By Joel Holdsworth (Joelholdsworth) - Non-Derived SVG of Radiate gluon.png, originally the work of SilverStar at Feynmann-diagram-gluon-radiation.svg, updated by joelholdsworth., Public domain, https://commons.wikimedia.org/w/index.php?curid=1764161
1948 CE
Feynman Diagrams Introduced
Richard Feynman introduces Feynman diagrams to visualize particle interactions in quantum electrodynamics. #physics #quantum
1952 CE
Bohmian Mechanics Proposed
David Bohm develops a deterministic hidden-variable interpretation of quantum mechanics. #physics #quantum
1954 CE
Yang-Mills Theory Non-Abelian Gauge
Chen Ning Yang and Robert Mills formulate non-Abelian gauge theory, foundational for the Standard Model. #physics #quantum
1957 CE
Many-Worlds Interpretation
Hugh Everett III proposes the many-worlds interpretation, where all quantum possibilities coexist. #physics #quantum
Many-Worlds Interpretation By Christian Schirm - Own work, based on File:ISO_7010_W003.svg and File:Skull_and_Crossbones.svg, inspired by File:MWI_Schrodingers_cat.png, CC0, https://commons.wikimedia.org/w/index.php?curid=17512691
1964 CE
Bell's Theorem Published
John Bell proves that no local hidden-variable theory can reproduce all quantum predictions, enabling experimental tests. #physics #quantum
1970 CE
Quantum Teleportation Proposed
Charles Bennett and others propose quantum teleportation using entanglement. #physics #quantum
Quantum Teleportation Proposed By JozumBjada - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=128460435
1974 CE
Quantum Field Theory in Curved Spacetime
Stephen Hawking predicts Hawking radiation using quantum field theory near black holes. #physics #quantum
Aspect Experiment Tests Bell Inequality By Ecole polytechnique from Paris - PHYSIQUE QUANTIQUE : LES TRAVAUX D'ALAIN ASPECT, PROFESSEUR À L’X, COURONNÉS DU PRIX NOBEL 2022, CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=126015843
1984 CE
Quantum Cryptography BB84 Protocol
Charles Bennett and Gilles Brassard invent BB84, the first quantum cryptography protocol. #physics #quantum
1985 CE
Quantum Computing Concept by Deutsch
David Deutsch describes a universal quantum computer, laying groundwork for quantum computing. #physics #quantum
Quantum Computing Concept by Deutsch By Dev Jadiya - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=158261563
1993 CE
Quantum Teleportation Experiment
First experimental demonstration of quantum teleportation by Anton Zeilinger's group. #physics #quantum
1994 CE
Shor's Algorithm for Factoring
Peter Shor develops a quantum algorithm for integer factorization, threatening RSA encryption. #physics #quantum
1995 CE
Bose-Einstein Condensate Created
Eric Cornell and Carl Wieman produce the first Bose-Einstein condensate, a quantum state of matter. #physics #quantum
Bose-Einstein Condensate Created By Vectorized version by AG Caesar, original by DG85 - Inspired by a work from Wikipedia User DG85 https://commons.wikimedia.org/wiki/File:QuantumPhaseTransition.png, Public domain, https://commons.wikimedia.org/w/index.php?curid=67110336
1997 CE
Quantum Dots Discovered
Quantum dots, nanoscale semiconductor particles with quantum properties, are developed. #physics #quantum
Quantum Dots Discovered By Walkman16 - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=15266942
1998 CE
Quantum Eraser Experiment
Marlan Scully and colleagues demonstrate the quantum eraser, illustrating complementarity. #physics #quantum
2001 CE
Nobel Prize for Bose-Einstein Condensate
Cornell, Ketterle, and Wieman win Nobel for achieving Bose-Einstein condensation. #physics #quantum
2004 CE
Quantum Memory Demonstrated
First demonstration of a quantum memory for storing quantum information. #physics #quantum
2007 CE
D-Wave Demonstrates Quantum Annealing
D-Wave Systems claims first commercial quantum computer using quantum annealing. #physics #quantum
D-Wave Demonstrates Quantum Annealing By Mwjohnson0 - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=44720502
2010 CE
Quantum Supremacy Experiment Proposed
John Preskill coins 'quantum supremacy' for tasks beyond classical computers. #physics #quantum
2012 CE
Nobel Prize for Quantum Optics
Serge Haroche and David Wineland win Nobel for measuring and manipulating individual quantum systems. #physics #quantum
2015 CE
Loophole-Free Bell Test
Multiple experiments close detection and locality loopholes, confirming quantum nonlocality. #physics #quantum
2016 CE
Quantum Satellite Micius Launched
China launches the Micius satellite for quantum communication experiments. #physics #quantum