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Showing 1–9 of 9 results
Advanced filters: Author: Jiri Janousek Clear advanced filters

  • Multi-partite entanglement is essential not only to understand large quantum ensembles but also to build useful quantum technologies. Armstronget al. demonstrate multimode entanglement of up to eight modes using programmable virtual networks based on linear optics that can be switched in real time.

    • Seiji Armstrong
    • Jean-François Morizur
    • Hans-A. Bachor
    ResearchOpen Access
    Nature Communications
    Volume: 3, P: 1-8

  • Researchers use squeezed light to track the constituents of yeast cells with a performance that overcomes the quantum noise limit. This approach allows for the utilization of low optical power, which helps to minimize cell damage.

    • Michael A. Taylor
    • Jiri Janousek
    • Warwick P. Bowen
    Research
    Nature Photonics
    Volume: 7, P: 229-233

  • Emulation of noiseless linear amplification of quantum states of light is demonstrated by post-selection of measurement data obtained by heterodyne detection. Using this protocol, Einstein–Podolsky–Rosen entanglement is recovered after its degradation by transmission loss. This protocol is applicable to other quantum communication protocols, including teleportation and remote state preparation.

    • Helen M. Chrzanowski
    • Nathan Walk
    • Ping Koy Lam
    Research
    Nature Photonics
    Volume: 8, P: 333-338

  • Quasi-phase matching (QPM) is a well-known technique to improve the efficiency of frequency conversion processes in 3D nonlinear optical materials. Here, the authors report the implementation of nanoscale QPM in 2D 3R-stacked twisted MoS2, showing enhanced second harmonic generation and spontaneous parametric down-conversion.

    • Yilin Tang
    • Kabilan Sripathy
    • Yuerui Lu
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-9

  • Spontaneous parametric down-conversion in thin films should allow to realise extremely compact entangled photon sources. Here, the authors generate entangled photon pairs from a 3R-MoS2 flake, characterize them via quantum state tomography, and show how to tune between different Bell state outputs by changing the pump polarization.

    • Maximilian A. Weissflog
    • Anna Fedotova
    • Falk Eilenberger
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-10

  • Optical entanglement — a key requirement for many quantum communication protocols — is typically formed between two distinct beams, requiring repeated combination of complex resources, which becomes increasingly difficult as the number of entangled information channels increases. Here entanglement between two spatial modes within one beam is demonstrated.

    • J. Janousek
    • K. Wagner
    • H-A. Bachor
    Research
    Nature Photonics
    Volume: 3, P: 399-402