Advanced search

Filter By:

Journal Check one or more journals to show results from those journals only.

Choose more journals

Article type Check one or more article types to show results from those article types only.
Subject Check one or more subjects to show results from those subjects only.
Date Choose a date option to show results from those dates only.

Custom date range

Clear all filters
Sort by:
Showing 1–10 of 10 results
Advanced filters: Author: "Roman Schnabel" Clear advanced filters

  • Two independent experiments demonstrate that quantum entanglement that has been lost in decoherence processes can be recovered. For the first time such ’entanglement distillation’ has been achieved for states of light that are entangled in continuous variables, which should help to increase the distance over which quantum information can be distributed.

    • Boris Hage
    • Aiko Samblowski
    • Roman Schnabel
    Research
    Nature Physics
    Volume: 4, P: 915-918

  • Researchers demonstrate a laser interferometer that achieves simultaneous nonclassical readout of two conjugated observables. Because their system uses steady-state entanglement, it does not require any conditioning or post-selection. By distinguishing between scientific and parasitic signals, its sensitivity exceeds the standard quantum limit by about 6 dB.

    • Sebastian Steinlechner
    • Jöran Bauchrowitz
    • Roman Schnabel
    Research
    Nature Photonics
    Volume: 7, P: 626-630

  • Recent theory predicts that Einstein–Podolsky–Rosen arguments enable an effect in which one party can steer the other but not the converse. Researchers have now demonstrated this one-way steering effect with two entangled Gaussian modes of light, potentially opening up a new field of applications in quantum information.

    • Vitus Händchen
    • Tobias Eberle
    • Roman Schnabel
    Research
    Nature Photonics
    Volume: 6, P: 596-599

  • Gravitational wave detectors based on laser interferometry have reached an incredible level of sensitivity. But to develop to the level needed to explore the Universe, the next generation of detectors will probably need to use squeezed light.

    • Roman Schnabel
    News & Views
    Nature Physics
    Volume: 4, P: 440-441

  • When quantum key distribution is composed with other secure protocols the overall security has to be guaranteed, which adds further security requirements. Here, the authors demonstrate continuous-variable quantum key distribution with composable security and one-sided-device independence.

    • Tobias Gehring
    • Vitus Händchen
    • Roman Schnabel
    ResearchOpen Access
    Nature Communications
    Volume: 6, P: 1-7

  • Entanglement distribution between distant parties is an essential component to most quantum communication protocols, but losses and decoherence present in real systems degrade it. Here the authors demonstrate an efficient iterative entanglement distillation protocol that does not rely on quantum memories.

    • Daniela Abdelkhalek
    • Mareike Syllwasschy
    • Roman Schnabel
    ResearchOpen Access
    Nature Communications
    Volume: 7, P: 1-7

  • Gravitational waves are predicted by general relativity, but their direct observation from astronomical sources hinges on large improvements in detection sensitivity. The authors review how squeezed light and other quantum optical concepts are being applied in the development of next generation interferometric detectors.

    • Roman Schnabel
    • Nergis Mavalvala
    • Ping K. Lam
    Reviews
    Nature Communications
    Volume: 1, P: 1-10

  • ‘Squeezed light’ enables quantum noise in one aspect of light to be reduced by increasing the noise, or more accurately the quantum uncertainty, of a complementary aspect. This has now been used to push the detectors at the heart of the GEO600 gravitational wave observatory to unprecedented levels of sensitivity.

    • J. Abadie
    • B. P. Abbott
    • J. Zweizig
    Research
    Nature Physics
    Volume: 7, P: 962-965