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Showing 1–6 of 6 results
Advanced filters: Author: Emil Zeuthen Clear advanced filters

  • A hybrid quantum network combining entangled light with an atomic spin ensemble engineered to act as a negative-mass oscillator enables frequency-dependent quantum noise reduction for measurements in the acoustic noise frequency range relevant for gravitational-wave detection.

    • Valeriy Novikov
    • Jun Jia
    • Eugene Simon Polzik
    ResearchOpen Access
    Nature
    Volume: 643, P: 955-960

  • The authors demonstrated an unprecedented level of polarization squeezing of light generated by an atomic ensemble, and a new regime of continuous quantum measurements on a macroscopic material oscillator.

    • Christian Bærentsen
    • Sergey A. Fedorov
    • Eugene S. Polzik
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-7

  • Realising a quantum-backaction-limited oscillator in the acoustic frequency range would have applications in sensing and metrology. Here, the authors reach this goal by demonstrating destructive interference between quantum back-action noise and shot noise down to sub-kHz range in a warm atomic vapor cell.

    • Jun Jia
    • Valeriy Novikov
    • Eugene S. Polzik
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-10

  • 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