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Showing 1–8 of 8 results
Advanced filters: Author: Michał Parniak Clear advanced filters

  • Quantum communications and distributed quantum computing can only be realized by efficient and robust entanglement generation between the communicating parties. The authors present and experimental demonstration of a wavevector multiplexed quantum memory from which Bell-type states are deterministically generated and have potential for use with quantum repeaters.

    • Michał Lipka
    • Mateusz Mazelanik
    • Michał Parniak
    ResearchOpen Access
    Communications Physics
    Volume: 4, P: 1-10

  • Multiplexing of quantum memories could boost the efficiency of photon state preparation. Here, the authors use a cold atomic ensemble and a single-photon resolving camera to exploit emission multiplexing of Raman photons from 665 different angular modes, confirming nonclassical photon-number correlations.

    • Michał Parniak
    • Michał Dąbrowski
    • Wojciech Wasilewski
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-9

  • Spectral super-resolution methods generally apply only to laser spectroscopy. Here, thanks to a Gradient Echo Memory with time-frequency processing capabilities, the authors are able to resolve frequency differences with precision below the Fourier limit for narrowband and ultra-low input-light level.

    • Mateusz Mazelanik
    • Adam Leszczyński
    • Michał Parniak
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-12

  • Einstein–Podolsky–Rosen entanglement between a millimetre-size mechanical membrane oscillator and a collective atomic spin oscillator formed by an ensemble of caesium atoms is achieved, although the two systems are spatially separated by one metre.

    • Rodrigo A. Thomas
    • Michał Parniak
    • Eugene S. Polzik
    Research
    Nature Physics
    Volume: 17, P: 228-233

  • Continuous-wave conversion of a 13.9 GHz field to a near-infrared optical signal is demonstrated by using Rydberg atoms at room temperature. The conversion bandwidth is 16 MHz and the conversion dynamic range is 57 dB, descending down to 3.8 K noise-equivalent temperature.

    • Sebastian Borówka
    • Uliana Pylypenko
    • Michał Parniak
    ResearchOpen Access
    Nature Photonics
    Volume: 18, P: 32-38

  • Achieving micrometric resolution in 3D magnetic resonance imaging is a standing challenge, and carries the potential of probing atomic coherences. The authors propose an optical method to probe spin resonances and reconstruct the 3D structure of an atomic ensemble’s coherence based on a single measurement of a two-photon Raman transition.

    • Mateusz Mazelanik
    • Adam Leszczyński
    • Michał Parniak
    ResearchOpen Access
    Communications Physics
    Volume: 6, P: 1-7