Wyniki wyszukiwania dla: quantum decoherence

• Quantum security and theory of decoherence

  Publikacja

  • P. A. Mironowicz

  - NEW JOURNAL OF PHYSICS - Rok 2022

  We sketch a relation between two crucial, yet independent, fields in quantum information research, viz. quantum decoherence and quantum cryptography. We investigate here how the standard cryptographic assumption of shielded laboratory, stating that data generated by a secure quantum device remain private unless explicitly published, is disturbed by the einselection mechanism of quantum Darwinism explaining the measurement process...

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• Quantum Coherence as a Resource

  Publikacja

  • A. Streltsov
  • G. Adesso
  • M. B. Plenio

  - REVIEWS OF MODERN PHYSICS - Rok 2017

  The coherent superposition of states, in combination with the quantization of observables, represents one of the most fundamental features that mark the departure of quantum mechanics from the classical realm. Quantum coherence in many-body systems embodies the essence of entanglement and is an essential ingredient for a plethora of physical phenomena in quantum optics, quantum information, solid state physics, and nanoscale thermodynamics....

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• Decoherence-free communication over multiaccess quantum channels

  Publikacja

  • M. Demianowicz

  - OPEN SYSTEMS & INFORMATION DYNAMICS - Rok 2013

  In this paper we consider decoherence-free communication over multiple access and k-user quantum channels. First, we concentrate on a hermitian unitary noise model U for a two-access bi-unitary channel and show that in this case a decoherence-free code exists if the space of Schmidt matrices of an eigensubspace of U exhibits certain properties of decomposability. Then, we show that our technique is also applicable for generic random unitary...

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• Structure of the Resource Theory of Quantum Coherence

  Publikacja

  • A. Streltsov
  • S. Rana
  • P. Boes
  • R. Eisert

  - PHYSICAL REVIEW LETTERS - Rok 2017

  Quantum coherence is an essential feature of quantum mechanics which is responsible for the departure between the classical and quantum world. The recently established resource theory of quantum coherence studies possible quantum technological applications of quantum coherence, and limitations that arise if one is lacking the ability to establish superpositions. An important open problem in this context is a simple characterization...

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• Reexamination of the decoherence of spin registers

  Publikacja

  • J. Tuziemski
  • A. Lampo
  • M. Lewenstein
  • J. K. Korbicz

  - PHYSICAL REVIEW A - Rok 2019

  We revisit the decoherence process of a multiqubit register interacting with a thermal bosonic bath. We generalize the previous studies by considering not only the register’s behavior but also a part of its environment. In particular, we are interested in information flow from the register to the environment, which we describe using recently introduced multipartite quantum state structures called spectrum broadcast structures....

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• Quantum Matter

  Czasopisma

  ISSN: 2164-7615

• Quantum Topology

  Czasopisma

  ISSN: 1663-487X , eISSN: 1664-073X

• QUANTUM ELECTRONICS

  Czasopisma

  ISSN: 1063-7818 , eISSN: 1468-4799

• PRX Quantum

  Czasopisma

  eISSN: 2691-3399

• Quantum Reports

  Czasopisma

  eISSN: 2624-960X