Frank Verstraete (born November 1972) is a Belgian quantum physicist who is working on the interface between
quantum information theory
Quantum information is the information of the state of a quantum system. It is the basic entity of study in quantum information theory, and can be manipulated using quantum information processing techniques. Quantum information refers to both t ...
and quantum
many-body physics
The many-body problem is a general name for a vast category of physical problems pertaining to the properties of microscopic systems made of many interacting particles. Terminology
''Microscopic'' here implies that quantum mechanics has to be ...
. He pioneered the use of tensor networks and entanglement theory in quantum many body systems. He holds the Leigh Trapnell Professorship of Quantum Physics at the
Faculty of Mathematics, University of Cambridge
The Faculty of Mathematics at the University of Cambridge comprises the Department of Pure Mathematics and Mathematical Statistics (DPMMS) and the Department of Applied Mathematics and Theoretical Physics (DAMTP). It is housed in the Centre for ...
, and is professor at the Faculty of Physics at
Ghent University
Ghent University (, abbreviated as UGent) is a Public university, public research university located in Ghent, in the East Flanders province of Belgium.
Located in Flanders, Ghent University is the second largest Belgian university, consisting o ...
.
Career
Verstraete obtained a degree of electrical engineering in Louvain and of Master in Physics from Ghent University, and obtained his PhD on the topic of quantum entanglement in 2002 under supervision of Bart De Moor and Henri Verschelde at the
KU Leuven
KU Leuven (Katholieke Universiteit Leuven) is a Catholic research university in the city of Leuven, Leuven, Belgium. Founded in 1425, it is the oldest university in Belgium and the oldest university in the Low Countries.
In addition to its mai ...
. He pioneered the use of
quantum entanglement
Quantum entanglement is the phenomenon where the quantum state of each Subatomic particle, particle in a group cannot be described independently of the state of the others, even when the particles are separated by a large distance. The topic o ...
as a unifying theme for describing strongly interacting quantum many-body systems, which are among the most challenging systems to analyze theoretically or numerically, but also very promising for future quantum technologies such as quantum computers. After working as a postdoc at the
Max Planck Institute for Quantum Optics in the group of
Ignacio Cirac (2002–2004) and at the
California Institute of Technology
The California Institute of Technology (branded as Caltech) is a private research university in Pasadena, California, United States. The university is responsible for many modern scientific advancements and is among a small group of institutes ...
(2004–2006), he became full professor and the chair of theoretical quantum nanophysics at the
University of Vienna
The University of Vienna (, ) is a public university, public research university in Vienna, Austria. Founded by Rudolf IV, Duke of Austria, Duke Rudolph IV in 1365, it is the oldest university in the German-speaking world and among the largest ...
in 2006. He moved back to Ghent University with an Odysseus grant from the
FWO in 2012, where he has since built a large research group on applications of entanglement in quantum many-body systems. Since the fall 2022, he holds the chair of Quantum Physics at to the Department of Applied Mathematics and Theoretical Physics of the
University of Cambridge
The University of Cambridge is a Public university, public collegiate university, collegiate research university in Cambridge, England. Founded in 1209, the University of Cambridge is the List of oldest universities in continuous operation, wo ...
.
Scientific work
Among his notable contributions is the discovery that there are nine different ways (represented by equivalence classes under stochastic
LOCC
LOCC, or local operations and classical communication, is a method in quantum information theory where a local (product) operation is performed on part of the system, and where the result of that operation is "communicated" classically to another ...
operations (SLOCC)) in which four
qubit
In quantum computing, a qubit () or quantum bit is a basic unit of quantum information—the quantum version of the classic binary bit physically realized with a two-state device. A qubit is a two-state (or two-level) quantum-mechanical syste ...
s can be entangled, the theoretical demonstration that a universal quantum computer can be realized entirely by
dissipation
In thermodynamics, dissipation is the result of an irreversible process that affects a thermodynamic system. In a dissipative process, energy ( internal, bulk flow kinetic, or system potential) transforms from an initial form to a final form, wh ...
, and the development of a quantum generalization of the classical
Metropolis algorithm to find ground states of many-body Hamiltonians.
He played a leading role in the development of modern variational methods of quantum many-body physics based on
Matrix product state
A matrix product state (MPS) is a representation of a quantum many-body state. It is at the core of one of the most effective algorithms for solving one dimensional strongly correlated quantum systems – the density matrix renormalization group ...
s (MPS),
Tensor network states, and
Projected entangled pair states (PEPS) and applying them to problems in condensed-matter physics, many-body physics, and quantum field theory. Among others, he was among the authors introducing ''fermionic PEPS'', ''continuous MPS'', and ''matrix product operators'', and he is co-author of a highly cited review on the topic.
Awards
Verstraete has received numerous awards, among them the
Lieben Prize
The Ignaz Lieben Prize, named after the Austrian banker , is an annual Austrian award made by the Austrian Academy of Sciences to young scientists working in the fields of molecular biology, chemistry, or physics.
Biography
The Ignaz Lieben Prize ...
in 2009 and the
Francqui Prize
The Francqui Prize is a prestigious Belgian scholarly and scientific prize named after Émile Francqui. Normally annually since 1933, the Francqui Foundation awards it in recognition of the achievements of a scholar or scientist, who at the star ...
in 2018 and is also distinguished visiting research chair at the
Perimeter Institute for Theoretical Physics
Perimeter Institute for Theoretical Physics (PI, Perimeter, PITP) is an independent research centre in foundational theoretical physics located in Waterloo, Ontario, Canada. It was founded in 1999. The institute's founding and major benefactor i ...
in
Waterloo, Ontario
Waterloo is a city in the Canadian province of Ontario. It is one of three cities in the Regional Municipality of Waterloo (formerly Waterloo County, Ontario, Waterloo County). Waterloo is situated about west-southwest of Toronto, but it is n ...
.
Selected publications
''A study of entanglement in quantum information theory'' Ph.D. Thesis, Katholieke Universiteit Leuven, 2002.
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References
{{DEFAULTSORT:Verstraete, Frank
Belgian physicists
Academic staff of the University of Vienna
Academic staff of Ghent University
Living people
1972 births