David P. DiVincenzo
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David P. DiVincenzo (born 1959) is an American theoretical physicist. He is the director of the Institute of Theoretical Nanoelectronics at the Peter Grünberg Institute at the
Forschungszentrum Jülich Forschungszentrum Jülich (FZJ here for short) is a national research institution that pursues interdisciplinary research in the fields of energy, information, and bioeconomy. It operates research infrastructures with a focus on supercomputers. C ...
and Professor at the Institute for Quantum Information at
RWTH Aachen University RWTH Aachen University (), also known as North Rhine-Westphalia Technical University of Aachen, Rhine-Westphalia Technical University of Aachen, Technical University of Aachen, University of Aachen, or ''Rheinisch-Westfälische Technische Hoch ...
. With Daniel Loss (at the
University of Basel The University of Basel (Latin: ''Universitas Basiliensis'', German: ''Universität Basel'') is a university in Basel, Switzerland. Founded on 4 April 1460, it is Switzerland's oldest university and among the world's oldest surviving universit ...
), he proposed the
Loss–DiVincenzo quantum computer The spin qubit quantum computer is a quantum computer based on controlling the spin of charge carriers (electrons and electron holes) in semiconductor devices. The first spin qubit quantum computer was first proposed by Daniel Loss and David P. DiV ...
in 1997, which would use electron spins in
quantum dots Quantum dots (QDs) are semiconductor particles a few nanometres in size, having optical and electronic properties that differ from those of larger particles as a result of quantum mechanics. They are a central topic in nanotechnology. When the ...
as
qubits 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, ...
.


Career

In 1996, during his research at IBM, he published a paper "Topics in Quantum Computing" which outlined the 5 minimal requirements he predicted were necessary for creating a quantum computer. It has since become known as the " DiVincenzo Criteria" and has influenced much of the experimental research into developing a working quantum computer. The DiVincenzo Criteria that a quantum computer implementation must satisfy are as follows: # A scalable physical system with well-characterized
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, # The ability to initialize the state of the qubits to a simple fiducial state, such as to , 000\cdots\rangle, # A "universal" set of
quantum gate In quantum computing and specifically the quantum circuit model of computation, a quantum logic gate (or simply quantum gate) is a basic quantum circuit operating on a small number of qubits. They are the building blocks of quantum circuits, lik ...
s, # Long relevant
decoherence Quantum decoherence is the loss of quantum coherence. In quantum mechanics, particles such as electrons are described by a wave function, a mathematical representation of the quantum state of a system; a probabilistic interpretation of the wa ...
times, much longer than the gate-operation time, # A qubit-specific measurement capability. For
quantum communication Quantum information science is an interdisciplinary field that seeks to understand the analysis, processing, and transmission of information using quantum mechanics principles. It combines the study of Information science with quantum mechanics, qu ...
, the act of transmitting intact qubits from place to place, two additional criteria must be satisfied:         6. The ability to interconvert stationary and flying qubits, and
        7. The ability to transmit flying qubits between distant locations.


See also

*
DiVincenzo's criteria The DiVincenzo criteria are conditions necessary for constructing a quantum computer, conditions proposed in 2000 by the theoretical physicist David P. DiVincenzo, as being those necessary to construct such a computer—a computer first proposed b ...
*
Quantum computing Quantum computing is a type of computation whose operations can harness the phenomena of quantum mechanics, such as superposition, interference, and entanglement. Devices that perform quantum computations are known as quantum computers. Though ...


References


External links


CV on RWCC Aachen University staff page
{{DEFAULTSORT:DiVincenzo, David Living people 21st-century American physicists 1959 births Scientists from Philadelphia Quantum information scientists American people of Italian descent