Decoherence as a sequence of entanglement swaps

@article{Fields2019DecoherenceAA,
  title={Decoherence as a sequence of entanglement swaps},
  author={Chris A. Fields},
  journal={Results in Physics},
  year={2019}
}
  • C. Fields
  • Published 2 February 2019
  • Computer Science
  • Results in Physics

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References

SHOWING 1-10 OF 39 REFERENCES
Decoherence, einselection, and the quantum origins of the classical
as quantum engineering. In the past two decades it has become increasingly clear that many (perhaps all) of the symptoms of classicality can be induced in quantum systems by their environments. Thus
Decoherence
  • R. Tomás, G. Yocky
  • Physics, Computer Science
    Principles of Quantum Computation and Information
  • 2018
TLDR
It is investigated 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 by interaction with the external environment.
Quantum Darwinism: Entanglement, branches, and the emergent classicality of redundantly stored quantum information
TLDR
The results show that the presence of redundancy divides information about the system into three parts: classical ( redundant); purely quantum; and the borderline, undifferentiated or "nonredundant," information.
Reconstruction of non-classical cavity field states with snapshots of their decoherence
TLDR
The complete reconstruction and pictorial representation of a variety of radiation states trapped in a cavity in which several photons survive long enough to be repeatedly measured is reported.
Decoherence, einselection and the existential interpretation (the rough guide)
  • W. Zurek
  • Physics
    Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences
  • 1998
The roles of decoherence and environment–induced superselection in the emergence of the classical from the quantum substrate are described. The stability of correlations between the einselected
A model-theoretic interpretation of environment-induced superselection
TLDR
Einselection is reformulated in terms of positive operator-valued measures acting on a global quantum state and it is shown that this reformulation enables a natural interpretation of apparently classical systems as virtual machines that requires no assumptions beyond those of classical computer science.
Quantum Darwinism Requires an Extra-Theoretical Assumption of Encoding Redundancy
Observers restricted to the observation of pointer states of apparatus cannot conclusively demonstrate that the pointer of an apparatus $\mathcal{A}$ registers the state of a system of interest S
Decoherence of quantum superpositions through coupling to engineered reservoirs
TLDR
Decoherence is induced by coupling the atom to engineered reservoirs, in which the coupling and state of the environment are controllable, and the decoherence rate scales with the square of a quantity describing the amplitude of the superposition state.
Decoherence and the Quantum-To-Classical Transition
Introducing Decoherence.- The Basic Formalism and Interpretation of Decoherence.- Decoherence Is Everywhere: Localization Due to Environmental Scattering.- Master-Equation Formulations of
Decoherence and the Quantum-To-Classical Transition
Introducing Decoherence.- The Basic Formalism and Interpretation of Decoherence.- Decoherence Is Everywhere: Localization Due to Environmental Scattering.- Master-Equation Formulations of
...
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