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Issue No. 4
What is Actually Teleported?
Asher Peres
There are no “unknown quantum states.” The phrase is self-contradictory. Moreover, Alice and Bob are only inanimate objects: They know nothing. What is teleported instantaneously from one system (Alice) to another system (Bob) is the applicability of the preparer’s knowledge of the state of a particular qubit in the systems. The operation necessitates the use of dual classical and quantum channels. Other examples of dual transmission, including “unspeakable information,” are presented and discussed. This paper also includes a narrative of my recollections of how quantum teleportation was conceived.
Note: This paper was published first in the IBM Journal of Research and Development, Vol 48,No.1.(2004). The kind permission to reproduce the paper of the late prof. Asher Peres in Hebrew translation in Physicaplus Online is appreciated.
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The six fathers, Torino 1993. |
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About the Author
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The Late Professor Asher Peres was the Gerard Swope Distinguished Professor of Physics at the Technion, Israel Institute of Technology. He has served in the past as Chairman of the Physics Department and Dean of the Graduate School at Technion, having joined the Technion faculty in 1959 after receiving a D.Sc. degree in theoretical physics from that institution. From 1965 to 1966, he served as President of the Israel Physical Society (IPS). Throughout his career, he has held numerous visiting research and teaching appointments in academic and research institutions in the United States and the United Kingdom, numerous advisory positions, etc.
Prof. Peres is an author of more than 250 papers, and the author of Quantum Theory: Concepts and Methods (Fundamental Theories of Physics, Volume 57, published by Kluwer Academic Publishers, 1993; Japanese translation published by the Maruzen Company Ltd., Tokyo, 2001). His recent research activities involved quantum information in a relativistic context, including general relativity, black holes, etc. Prof. Asher Peres has been awarded the 2004 Rothschild Prize in Physics by the Yad Hanadiv Foundation in Physical Sciences at a ceremony held in early May 2004.
Peres, one of the six "fathers" of quantum teleportation, was the incumbent of the Gerard Swope Chair in Physics at the Technion-Israel Institute of Technology, and was selected for the award due to the essential role he played in the creation of quantum information theory and for his numerous contributions to other branches of physics.
Passing away of Prof. Asher Peres is a great loss for the physical science in Israel and worldwide.
Read the interesting auto-biography by the late Professor Asher Peres entitled "I am the cat who walks by himself" in the website math.technion.ac.il/~lydia, dedicated to the memory of the late Professor Asher Peres.
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