Frank Verstraete
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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 quantum state, 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 re ...
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. ''Microscopic'' here implies that quantum mechanics has to be used to provid ...
. 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 ( nl, Universiteit Gent, abbreviated as UGent) is a public research university located in Ghent, Belgium. Established before the state of Belgium itself, the university was founded by the Dutch King William I in 1817, when the ...
.


Career

Verstraete obtained a degree of civil 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 (or Katholieke Universiteit Leuven) is a Catholic research university in the city of Leuven, Belgium. It conducts teaching, research, and services in computer science, engineering, natural sciences, theology, humanities, medicine, l ...
. He pioneered the use of
quantum entanglement Quantum entanglement is the phenomenon that occurs when a group of particles are generated, interact, or share spatial proximity in a way such that the quantum state of each particle of the group cannot be described independently of the state of ...
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 The Max-Planck-Institute of Quantum Optics (abbreviation: MPQ; german: Max-Planck-Institut für Quantenoptik) is a part of the Max Planck Society which operates 87 research facilities in Germany. The institute is located in Garching, Germany, w ...
in the group of
Ignacio Cirac Juan Ignacio Cirac Sasturain (born 11 October 1965), known professionally as Ignacio Cirac, is a Spanish physicist. He is one of the pioneers of the field of quantum computing and quantum information theory. He is the recipient of the 2006 Pri ...
(2002–2004) and at the
California Institute of Technology The California Institute of Technology (branded as Caltech or CIT)The university itself only spells its short form as "Caltech"; the institution considers other spellings such a"Cal Tech" and "CalTech" incorrect. The institute is also occasional ...
(2004–2006), he became full professor and the chair of theoretical quantum nanophysics at the
University of Vienna The University of Vienna (german: Universität Wien) is a public research university located in Vienna, Austria. It was founded by Duke Rudolph IV in 1365 and is the oldest university in the German-speaking world. With its long and rich histor ...
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 , mottoeng = Literal: From here, light and sacred draughts. Non literal: From this place, we gain enlightenment and precious knowledge. , established = , other_name = The Chancellor, Masters and Schola ...
.


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 system, ...
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 takes place in homogeneous thermodynamic systems. In a dissipative process, energy (internal, bulk flow kinetic, or system potential) transforms from an initial form to a ...
, and the development of a quantum generalization of the classical
Metropolis algorithm A metropolis () is a large city or conurbation which is a significant economic, political, and cultural center for a country or region, and an important hub for regional or international connections, commerce, and communications. A big ci ...
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 Matrix product state (MPS) is a quantum state of many particles (in N sites), written in the following form: : , \Psi\rangle = \sum_ \operatorname\left _1^ A_2^ \cdots A_N^\right, s_1 s_2 \ldots s_N\rangle, where A_i^ are complex, square matric ...
s (MPS), Tensor network states, and
Projected entangled pair state Projected is an American rock supergroup consisting of Sevendust members John Connolly and Vinnie Hornsby, Alter Bridge and Creed drummer Scott Phillips, and former Submersed and current Tremonti guitarist Eric Friedman. The band released ...
s (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 Priz ...
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 start ...
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. Due to the c ...
.


Selected publications


''A study of entanglement in quantum information theory''
Ph.D. Thesis, Katholieke Universiteit Leuven, 2002. * * * * * * * * *


References

{{DEFAULTSORT:Verstraete, Frank Belgian physicists Academic staff of the University of Vienna Academic staff of Ghent University Living people 1972 births