242 citations · 829 across the 23 of their papers we have counts for
13 papers · 1 filter
Laser-written micro-channel atomic magnetometer
Andrea Zanoni, Kostas Mouloudakis, Michael C. D. Tayler +4
We demonstrate a sensitive optically-pumped magnetometer using rubidium vapor and 0.75 amg of nitrogen buffer gas in a sub-mm-width sensing channel excavated by femtosecond laser w…
Quantum-enhanced magnetometry at optimal number density
Charikleia Troullinou, Vito Giovanni Lucivero, Morgan W. Mitchell
We study the use of squeezed probe light and evasion of measurement back-action to enhance the sensitivity and measurement bandwidth of an optically-pumped magnetometer (OPM) at se…
Squeezed-light enhancement and backaction evasion in a high sensitivity optically pumped magnetometer
C. Troullinou, R. Jiménez-Martínez, J. Kong +2
We study the effect of optical polarization squeezing on the performance of a sensitive, quantum-noise-limited optically pumped magnetometer. We use Bell-Bloom (BB) optical pumping…
Correlation function of spin noise due to atomic diffusion
V. G. Lucivero, N. D. McDonough, N. Dural +1
We use paramagnetic Faraday rotation to study spin noise spectrum from unpolarized Rb vapor in a tightly focused probe beam in the presence of N buffer gas. We derive an analyt…
Signal tracking beyond the time resolution of an atomic sensor by Kalman filtering
Ricardo Jiménez-Martínez, Jan Kolodynski, Charikleia Troullinou +3
We study causal waveform estimation (tracking) of time-varying signals in a paradigmatic atomic sensor, an alkali vapor monitored by Faraday rotation probing. We use Kalman filteri…
Sensitivity, quantum limits, and quantum enhancement of noise spectroscopies
Vito Giovanni Lucivero, Aleksandra Dimic, Jia Kong +2
We study the fundamental limits of noise spectroscopy using estimation theory, Faraday rotation probing of an atomic spin system, and squeezed light. We find a simple and general e…
Squeezed-light spin noise spectroscopy
Vito Giovanni Lucivero, Ricardo Jiménez-Martínez, Jia Kong +1
We report quantum enhancement of Faraday rotation spin noise spectroscopy by polarization squeezing of the probe beam. Using natural abundance Rb in 100 Torr of N_2 buffer gas, and…
A macroscopic quantum state analysed particle by particle
Federica A. Beduini, Joanna A. Zielinska, Vito G. Lucivero +2
Explaining how microscopic entities collectively produce macroscopic phenomena is a fundamental goal of many-body physics. Theory predicts that large-scale entanglement is responsi…
Interferometric measurement of the biphoton wave function
Federica A. Beduini, Joanna A. Zielińska, Vito G. Lucivero +2
Interference between an unknown two-photon state (a "biphoton") and the two-photon component of a reference state gives a phase-sensitive arrival-time distribution containing full…
Atomic filtering for hybrid continuous-variable/discrete-variable quantum optics
Joanna A. Zielińska, Federica A. Beduini, Vito Giovanni Lucivero +1
We demonstrate atomic filtering of frequency-degenerate photon pairs from a sub-threshold optical parametric oscillator (OPO). The filter, a modified Faraday anomalous dispersion o…
Shot-noise-limited magnetometer with sub-pT sensitivity at room temperature
Vito Giovanni Lucivero, Pawel Anielski, Wojciech Gawlik +1
We report a photon shot-noise-limited (SNL) optical magnetometer based on amplitude modulated optical rotation using a room-temperature Rb vapor in a cell with anti-relaxati…
Optimal Signal Recovery for Pulsed Balanced Detection
Yannick A. de Icaza Astiz, Vito Giovanni Lucivero, R. de J. León-Montiel +1
We demonstrate a new tool for filtering technical and electronic noises from pulses of light, especially relevant for signal processing methods in quantum optics experiments as a m…
Phase estimation via quantum interferometry for noisy detectors
Nicoló Spagnolo, Chiara Vitelli, Vito Giovanni Lucivero +3
The sensitivity in optical interferometry is strongly affected by losses during the signal propagation or at the detection stage. The optimal quantum states of the probing signals…