Question: What is the profession of both Daniel Greenberger and Anton Zeilinger?

Context paragraphs:
Lout Rampage!: Lout Rampage!  is a collection of comics by Daniel Clowes.  This 1991 paperback includes stories from "Eightball" #1-6, along with strips Clowes created for alternative comics anthologies "BLAB! ", "Young Lust", and "Weirdo".  It includes several of the cartoonist’s one-page collaborations with "The Duplex Planet" creator David Greenberger and two of his most well-known comic-strip rants: “I Hate You Deeply” and “I Love You Tenderly.”

Greenberger–Horne–Zeilinger state: In physics, in the area of quantum information theory, a Greenberger–Horne–Zeilinger state is a certain type of entangled quantum state which involves at least three subsystems (particles).  It was first studied by Daniel Greenberger, Michael Horne and Anton Zeilinger in 1989.  Extremely non-classical properties of the state have been observed.

Cat state: In quantum computing, the cat state, named after Schrödinger's cat, is the a quantum superposition of two macroscopically distinct states.  The individual states being superposed could be classical or quantum, but their macroscopicity is an important criterion.  A cat state could be of one or more modes or particles, and does not necessarily need entanglement, especially for the single-particle case.  This is in contrast to the Greenberger–Horne–Zeilinger state, which by definition consists of multiple distinct particles or modes and their entanglement.

Thomas Jennewein: Thomas Jennewein is an Austrian physicist who conducts research in quantum communication and quantum key distribution.  He has taught as an associate professor at the University of Waterloo and the Institute for Quantum Computing in Waterloo, Canada since 2009.  He earned his PhD under Anton Zeilinger at the University of Vienna in 2002, during which time he performed experiments on Bell's inequality and cryptography with entangled photons.  His current work at the Institute for Quantum Computing focuses on satellite-based free space quantum key distribution, with the goal of creating a global quantum network.

Daniel Greenberger: Daniel M. Greenberger (born 1932) is an American quantum physicist.  He has been professor of physics at the City College of New York since 1964.  He is also a fellow of the American Physical Society and—alongside Anton Zeilinger—founded the APS Topical Group on Quantum Information.

Anton Giulio Barrili: Anton Giulio Barrili (14 December 1836 – 14 August 1908), Italian novelist, was born at Savona, and was educated for the legal profession, which he abandoned for journalism in Genoa.  He was a volunteer in the campaign of 1859 and served with Garibaldi in 1866 and 1867.  From 1865 onwards he published a large number of books of fiction, which had wide popularity, his work being commonly compared with that of Victor Cherbuliez.

Pan Jianwei: Pan Jianwei () is a Chinese quantum physicist.  In 1987 he entered the University of Science and Technology of China (USTC), from which he received his bachelor's and master's degrees.  He received his PhD from the University of Vienna, in Vienna, Austria, where he worked in the group of Anton Zeilinger.

H. Jeff Kimble: H. Jeff Kimble (born April 23, 1949), is the William L. Valentine Professor and Professor of Physics at Caltech.  His research is in quantum optics and is noted for groundbreaking experiments in physics including one of the first demonstrations of teleportation of a quantum state (first demonstration is disputed with Anton Zeilinger), quantum logic gate, and the development of the first single atom laser.  According to Elizabeth Rogan, OSA CEO, "Jeff has led a revolution in modern physics through his pioneering research in the coherent control of the interactions of light and matter."  Kimble's main research focus is in quantum information science and the quantum dynamics of open systems.

Anton Zeilinger: Anton Zeilinger (] ; born 20 May 1945) is an Austrian quantum physicist who in 2008 received the Inaugural Isaac Newton Medal of the Institute of Physics (UK) for "his pioneering conceptual and experimental contributions to the foundations of quantum physics, which have become the cornerstone for the rapidly-evolving field of quantum information".  Zeilinger is professor of physics at the University of Vienna and Senior Scientist at the Institute for Quantum Optics and Quantum Information IQOQI at the Austrian Academy of Sciences.  Most of his research concerns the fundamental aspects and applications of quantum entanglement.

Anton Ludvig Alvestad: Anton Ludvig Alvestad (7 May 1883 – 2 July 1956) was a Norwegian politician and government minister for the Labour Party.  Born in Sula, Alvestad was a baker by profession, and owned his own bakery.  He was also active in the temperance movement.  An active labour politician from an early date, he was among the founding members of the Labour Party of Ålesund.  Between 1920 and 1921 he was the first Labour mayor of the city.

Supporting paragraphs: Daniel Greenberger Anton Zeilinger
Answer: quantum physicist