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Início
Agenda |
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- 07 de junho de 2017
16h30
Sala
18 (Cristalografia) -
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Prof.
Sebastian Deffner
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UMBC -- University
of Maryland Baltimore County - EUA
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Quantum
speed limits: from Heisenberg's uncertainty principle to optimal
quantum control
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One of the most widely known building blocks of
modern physics is Heisenberg's indeterminacy principle. Among
the different statements of this fundamental property of the
full quantum mechanical nature of physical reality, the
uncertainty relation for energy and time has a special place.
Its interpretation and its consequences have inspired continued
research efforts for almost a century. In its modern
formulation, the uncertainty relation is understood as setting a
fundamental bound on how fast any quantum system can evolve. In
this Colloquium we will discuss important milestones, such as
the Mandelstam-Tamm and the Margolus-Levitin bounds on the
quantum speed limit, and summarize recent applications in a
variety of current research fields -- including quantum
information theory, quantum computing, and quantum
thermodynamics amongst several others. To bring order and to
provide an access point into the many different notions and
concepts, we will group the various approaches into the minimal
time approach and the geometric approach, where the former
relies on quantum control theory, and the latter arises from
measuring the distinguishability of quantum states.
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Reference: arXiv:1705.08023
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