Anton Zeilinger

Anton Zeilinger is an Austrian quantum physicist known for experimental work on quantum entanglement and quantum information. He shared the 2022 Nobel Prize in Physics with Alain Aspect and John Clauser.

Quantum teleportation: A protocol that transfers an unknown quantum state using shared entanglement and classical communication. Zeilinger’s group demonstrated teleportation of photonic states, showing entanglement could enable state transfer.
Quantum entanglement: A quantum relation in which multiple systems share a joint state that cannot be described as independent states. Entangled photons are the central systems in many of Zeilinger’s tests and demonstrations.
Alain Aspect: A French physicist whose experiments tested Bell inequalities using entangled photons. Aspect shared the 2022 Nobel Prize with Zeilinger for experiments establishing quantum entanglement.
GHZ experiment: An experiment testing the correlations of a Greenberger–Horne–Zeilinger state of three or more particles. Zeilinger’s group demonstrated three-photon GHZ correlations, making the argument experimentally testable.
Quantum cryptography: Methods that use quantum-mechanical properties to protect or distribute cryptographic information. His entanglement experiments helped establish quantum correlations as tools for secure communication.
Bell inequality: A mathematical bound on correlations predicted by local hidden-variable theories. Measurements in Zeilinger’s experiments tested whether photon correlations exceed this bound.
John Clauser: An American physicist who conducted pioneering experimental tests of Bell inequalities. Clauser shared the 2022 Nobel Prize with Zeilinger for work on entangled photons.
Quantum teleportation experiment: A laboratory demonstration that transfers a quantum state through entanglement and classical communication. His group reported photon-state teleportation in 1997, an early landmark in quantum information.
Quantum communication: The transmission and processing of information using quantum states and effects. This broader field includes the communication protocols his photon experiments helped test.
Bell test: An experiment that tests Bell inequalities using measurements on correlated systems. His group performed increasingly stringent tests of quantum correlations using entangled photons.

Linked from 4 pages