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Showing 1–5 of 5 results
Advanced filters: Author: Iman Marvian Clear advanced filters

  • Can an idealised machine obtain pure coherent quantum states from mixed ones at a non-zero rate, or equivalently, can a machine distill synchronized quantum clocks starting from noisy ones? Iman Marvian demonstrates that this is impossible, even if the machine is allowed to spend an arbitrary amount of work.

    • Iman Marvian
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-9

  • According to Noether’s theorem, every symmetry of a dynamical evolution implies a conservation law. Marvian and Spekkens show that this theorem is deficient for certain types of quantum dynamics, and they propose measures of the extent to which a quantum state breaks a symmetry.

    • Iman Marvian
    • Robert W Spekkens
    Research
    Nature Communications
    Volume: 5, P: 1-8

  • Similarly to entropy, majorization allows to quantify deviation from uniformity in a wide range of fields. In this paper, the authors use its generalization to the quantum realm to derive a complete set of necessary and sufficient conditions for thermal transformations of quantum states.

    • Gilad Gour
    • David Jennings
    • Iman Marvian
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-9