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Asher Peres

Asher Peres

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Asher Peres was an Israeli physicist
Physicist
A physicist is a scientist who studies or practices physics. Physicists study a wide range of physical phenomena in many branches of physics spanning all length scales: from sub-atomic particles of which all ordinary matter is made to the behavior of the material Universe as a whole...

, considered a pioneer in quantum information
Quantum information
In quantum mechanics, quantum information is physical information that is held in the "state" of a quantum system. The most popular unit of quantum information is the qubit, a two-level quantum system...

 theory. According to his autobiography, he was born in Beaulieu-sur-Dordogne
Beaulieu-sur-Dordogne
Beaulieu-sur-Dordogne is a commune in the Corrèze department in the Limousin regionof central France. Beaulieu is a medieval city, originally dominated by its great abbey of St Pierre, of which only the abbey church remains.-Abbey:...

 in France
France
The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

, where his father, a Polish electrical engineer, had found work laying down power lines. Peres was given the name Aristide at birth, since the name his parents wanted to choose, Asher, the name of his maternal grandfather, was not on a list of permissible names. When Peres went to live in Israel, he changed his first name to Asher and his family name from Pressman to Peres.

Peres obtained his Ph.D.
Doctorate
A doctorate is an academic degree or professional degree that in most countries refers to a class of degrees which qualify the holder to teach in a specific field, A doctorate is an academic degree or professional degree that in most countries refers to a class of degrees which qualify the holder...

 in 1959 at Technion – Israel Institute of Technology under Nathan Rosen
Nathan Rosen
Nathan Rosen was an American-Israeli physicist noted for his study on the structure of the hydrogen molecule and his work with Albert Einstein and Boris Podolsky on entangled wave functions and the EPR paradox.-Background:Nathan Rosen was born into a Jewish family in Brooklyn, New York...

. Peres spent most of his academic career at Technion, where in 1988 he was appointed distinguished professor of physics.

Peres is well-known for his work relating quantum mechanics
Quantum mechanics
Quantum mechanics, also known as quantum physics or quantum theory, is a branch of physics providing a mathematical description of much of the dual particle-like and wave-like behavior and interactions of energy and matter. It departs from classical mechanics primarily at the atomic and subatomic...

 and information theory
Information theory
Information theory is a branch of applied mathematics and electrical engineering involving the quantification of information. Information theory was developed by Claude E. Shannon to find fundamental limits on signal processing operations such as compressing data and on reliably storing and...

, an approach which is extensively used in his textbook referenced below. Among other things, he helped to develop the Peres-Horodecki criterion
Peres-Horodecki criterion
The Peres-Horodecki criterion is a necessary condition, for the joint density matrix \rho of two quantum mechanical systems A and B, to be separable. It is also called the PPT criterion, for positive partial transpose. In the 2x2 and 2x3 dimensional cases the condition is also sufficient...

 for quantum entanglement
Quantum entanglement
Quantum entanglement occurs when electrons, molecules even as large as "buckyballs", photons, etc., interact physically and then become separated; the type of interaction is such that each resulting member of a pair is properly described by the same quantum mechanical description , which is...

 as well as the concept of quantum teleportation
Quantum teleportation
Quantum teleportation, or entanglement-assisted teleportation, is a process by which a qubit can be transmitted exactly from one location to another, without the qubit being transmitted through the intervening space...

.

He died in Haifa, Israel.

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