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Advanced filters: Author: Mikhail V. Balabas Clear advanced filters

Hybrid quantum network for sensing in the acoustic frequency range

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 Access02 Jul 2025
Nature

Volume: 643, P: 955-960
Non-invasive detection of animal nerve impulses with an atomic magnetometer operating near quantum limited sensitivity

Kasper Jensen
Rima Budvytyte
Eugene S. Polzik
ResearchOpen Access15 Jul 2016
Scientific Reports

Volume: 6, P: 1-7
Squeezed light from an oscillator measured at the rate of oscillation

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 Access16 May 2024
Nature Communications

Volume: 15, P: 1-7
Quantum back-action-evading measurement of motion in a negative mass reference frame

By coupling a mechanical object to an ensemble of atomic spins with negative effective mass, the object’s position can be measured without the usual quantum back-action perturbation of its momentum.

Christoffer B. Møller
Rodrigo A. Thomas
Eugene S. Polzik
Research13 Jul 2017
Nature

Volume: 547, P: 191-195
Magnetocardiography on an isolated animal heart with a room-temperature optically pumped magnetometer

Kasper Jensen
Mark Alexander Skarsfeldt
Eugene S. Polzik
ResearchOpen Access01 Nov 2018
Scientific Reports

Volume: 8, P: 1-9