Cited by 152Quantum Computing Algorithms and ArchitectureQuantum Information and CryptographyQuantum and electron transport phenomena

Optimal control of a qubit coupled to a non-Markovian environment

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Rebentrost, P., Serban, I., Schulte-Herbrüggen, T., Wilhelm, F. K.·2009·Physical Review Letters

Abstract

A central challenge for implementing quantum computing in the solid state is decoupling the qubits from the intrinsic noise of the material. We investigate the implementation of quantum gates for a paradigmatic, non-Markovian model: a single-qubit coupled to a two-level system that is exposed to a heat bath. We systematically search for optimal pulses using a generalization of the novel open systems gradient ascent pulse engineering algorithm. Next to the known optimal bias point of this model, there are optimal pulses which lead to high-fidelity quantum operations for a wide range of decoherence parameters.

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Crossref · 10.1103/physrevlett.102.090401

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  • Non-Markovian dynamics better preserve quantum information due to backflow of quantum information from the reservoir to the central spin.

    “Furthermore, it is well-known that non-Markovian dynamics better preserve quantum information, as non-Markovianity induces a backflow of quantum information from the reservoir to the central spin [106,107,108,109,110,111,112,113,114,115,116].”

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Research works printed but not linked: 1

  1. [7]F. Wilhelm et al. in Michael E. Flatt and Ionel Tifrea (eds.), Manipulating Quantum Coherence in Solid State Systems (NATO ASI Series), Springer, Dordrecht, 2007.

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Authors
Rebentrost, P., Serban, I., Schulte-Herbrüggen, T., & Wilhelm, F. K.
Affiliations
  • Harvard University (US)
  • University of Waterloo (CA)
Venue
Physical Review Letters
Published
2009-03-02
Volume
102
Issue
9
Pages
090401-090401
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
OpenAlex
W2089927214
Cited by
152
References
33
Citations by year
2026: 2 · 2025: 9 · 2024: 5 · 2023: 10 · 2022: 5 · 2021: 5 · 2020: 4 · 2019: 9 · 2018: 3 · 2017: 10 · 2016: 12 · 2015: 10 · 2014: 18 · 2013: 6 · 2012: 9
FWCI
15.84
Type
journal article
Language
en
Open access
Locations
  • Physical Review Letters (publishedVersion)
  • PubMed (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • arXiv (Cornell University)
Topics
  • Physical Sciences › Computer Science › Artificial Intelligence › Quantum Computing Algorithms and Architecture
  • Physical Sciences › Computer Science › Artificial Intelligence › Quantum Information and Cryptography
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum and electron transport phenomena
Keywords
optimal control, qubit decoherence, non-Markovian environments, two-level system, heat bath, gradient ascent pulse engineering, open quantum systems, quantum gate implementation, solid-state quantum computing, decoherence

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