Literature DB >> 27588838

Anti-Kibble-Zurek Behavior in Crossing the Quantum Critical Point of a Thermally Isolated System Driven by a Noisy Control Field.

Anirban Dutta1, Armin Rahmani2, Adolfo Del Campo1.   

Abstract

We show that a thermally isolated system driven across a quantum phase transition by a noisy control field exhibits anti-Kibble-Zurek behavior, whereby slower driving results in higher excitations. We characterize the density of excitations as a function of the ramping rate and the noise strength. The optimal driving time to minimize excitations is shown to scale as a universal power law of the noise strength. Our findings reveal the limitations of adiabatic protocols such as quantum annealing and demonstrate the universality of the optimal ramping rate.

Year:  2016        PMID: 27588838     DOI: 10.1103/PhysRevLett.117.080402

Source DB:  PubMed          Journal:  Phys Rev Lett        ISSN: 0031-9007            Impact factor:   9.161


  3 in total

1.  Exploring the possibilities of dynamical quantum phase transitions in the presence of a Markovian bath.

Authors:  Souvik Bandyopadhyay; Sudarshana Laha; Utso Bhattacharya; Amit Dutta
Journal:  Sci Rep       Date:  2018-08-09       Impact factor: 4.379

2.  Liouvillian of the Open STIRAP Problem.

Authors:  Thomas Mathisen; Jonas Larson
Journal:  Entropy (Basel)       Date:  2018-01-03       Impact factor: 2.524

3.  Defects in Quantum Computers.

Authors:  Bartłomiej Gardas; Jacek Dziarmaga; Wojciech H Zurek; Michael Zwolak
Journal:  Sci Rep       Date:  2018-03-14       Impact factor: 4.379

  3 in total

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