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Showing 1–6 of 6 results
Advanced filters: Author: Igor Pikovski Clear advanced filters

  • Commutation relations define the limit to which two complementary properties can be simultaneously known—Heisenberg’s uncertainty principle. Yet it is thought that these canonical relations might be different in the quantum gravity regime. Researchers now show how quantum-optics experiments might provide a direct route for studying these effects.

    • Igor Pikovski
    • Michael R. Vanner
    • Časlav Brukner
    Research
    Nature Physics
    Volume: 8, P: 393-397

  • While it has been suggested that low- energy experiments might allow to find evidence for quantization of gravity, direct detection of single gravitons has normally been considered a hopeless task. Here, the authors suggest that a massive body cooled to the ground state in a gravitational wave background should display detectable stimulated single graviton transitions.

    • Germain Tobar
    • Sreenath K. Manikandan
    • Igor Pikovski
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-14

  • Gravity and quantum mechanics are expected to meet at extreme energy scales, but time dilation could induce decoherence even at low energies affecting microscopic objects—a prospect that could be tested in future matter-wave experiments.

    • Igor Pikovski
    • Magdalena Zych
    • Časlav Brukner
    Research
    Nature Physics
    Volume: 11, P: 668-672

  • In the theory of general relativity time flows at different rates depending on the space–time geometry. Here, a drop in the visibility of a quantum 'clock' interference in a gravitational potential is predicted, which cannot be explained without the general relativistic notion of time.

    • Magdalena Zych
    • Fabio Costa
    • Časlav Brukner
    ResearchOpen Access
    Nature Communications
    Volume: 2, P: 1-7

  • Time has a fundamentally different character in quantum mechanics and in general relativity. Here, the authors consider a thought experiment where a massive body in a spatial superposition leads to entanglement of temporal orders between time-like events, resulting in a violation of a Bell-type inequality.

    • Magdalena Zych
    • Fabio Costa
    • Časlav Brukner
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-10