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020 _a9783031741791
_9978-3-031-74179-1
024 7 _a10.1007/978-3-031-74179-1
_2doi
050 4 _aQC173.96-174.52
072 7 _aPHQ
_2bicssc
072 7 _aSCI057000
_2bisacsh
072 7 _aPHQ
_2thema
100 1 _aCarabba, Nicoletta.
_eauthor.
_4aut
_4http://id.loc.gov/vocabulary/relators/aut
_990624
245 1 0 _aQuantum Speed Limits to Operator Growth
_h[electronic resource] /
_cby Nicoletta Carabba.
250 _a1st ed. 2024.
264 1 _aCham :
_bSpringer Nature Switzerland :
_bImprint: Springer,
_c2024.
300 _aXV, 137 p. 9 illus., 6 illus. in color.
_bonline resource.
336 _atext
_btxt
_2rdacontent
337 _acomputer
_bc
_2rdamedia
338 _aonline resource
_bcr
_2rdacarrier
347 _atext file
_bPDF
_2rda
490 1 _aSpringer Theses, Recognizing Outstanding Ph.D. Research,
_x2190-5061
505 0 _aChapter 1.Introduction -- Chapter 2.Operator growth in Krylov space -- Chapter 3.Dispersion bound on Krylov complexity -- Chapter 4.A brief history of quantum speed limits in isolated systems -- Chapter 5.QSLs on operator flows -- Chapter 6. QSLs on correlation functions -- Chapter 7.A geometric operator quantum speed limit -- Chapter 8.Conclusions.
520 _aThis book introduces universal bounds to quantum unitary dynamics, with applications ranging from condensed matter models to quantum metrology and computation. Motivated by the observation that the dynamics of many-body systems can be better unraveled in the Heisenberg picture, we focus on the unitary evolution of quantum observables, a process known as operator growth and quantified by the Krylov complexity. By means of a generalized uncertainty relation, we constrain the complexity growth through a universal speed limit named the dispersion bound, investigating also its relation with quantum chaos. Furthermore, the book extends the framework of quantum speed limits (QSLs) to operator flows, identifying new fundamental timescales of physical processes. Crucially, the dynamics of operator complexity attains the QSL whenever the dispersion bound is saturated. Our results provide computable constraints on the linear response of many-body systems out of equilibrium and the quantum Fisher information governing the precision of quantum measurements.
650 0 _aQuantum physics.
_966608
650 0 _aSystem theory.
_966519
650 0 _aDynamical systems.
650 0 _aQuantum electrodynamics.
_970514
650 1 4 _aQuantum Physics.
_966608
650 2 4 _aQuantum Measurement and Metrology.
_967415
650 2 4 _aComplex Systems.
_966520
650 2 4 _aDynamical Systems.
650 2 4 _aQuantum Electrodynamics, Relativistic and Many-body Calculations.
_970517
710 2 _aSpringerLink (Online service)
773 0 _tSpringer Nature eBook
776 0 8 _iPrinted edition:
_z9783031741784
776 0 8 _iPrinted edition:
_z9783031741807
776 0 8 _iPrinted edition:
_z9783031741814
830 0 _aSpringer Theses, Recognizing Outstanding Ph.D. Research,
_x2190-5061
_966370
856 4 0 _uhttps://doi.org/10.1007/978-3-031-74179-1
912 _aZDB-2-PHA
912 _aZDB-2-SXP
999 _c66608
_d66608