READ ME File For 'Dataset title' Dataset DOI: https://doi.org/10.5258/SOTON/D3337 Date that the file was created: 01/2025 ------------------- GENERAL INFORMATION ------------------- ReadMe Author: Rafael Muffato Reis, University of Southampton & PUC-RIO Date of data collection: July 2023 Information about geographic location of data collection: B46, University of Southampton, Highfield Campus, Southampton, UK -------------------------- SHARING/ACCESS INFORMATION -------------------------- Licenses/restrictions placed on the data, or limitations of reuse: CC BY Recommended citation for the data: https://doi.org/10.5258/SOTON/D3337 This dataset supports the publication: AUTHORS: Rafael Muffato Reis, Tiberius Stefan Georgescu, Jack Homans, Thiago Barbosa dos Santos Guerreiro, Qiongyuan Wu, Diana A. Chisholm, Matteo Carlesso, Mauro Paternostro and Hendrik Ulbricht TITLE: Generation of classical non-Gaussian states by squeezing a thermal state into non-linear motion of levitated optomechanics JOURNAL: Physical Review Research PAPER DOI IF KNOWN: Links to other publicly accessible locations of the data: Links/relationships to ancillary or related data sets: -------------------- DATA & FILE OVERVIEW -------------------- Each individual dataset is a save of voltage vs time in trc format. In each file there is metadata of oscilloscope settings. Reference trace at 5mbar at 300K, used for calibration pourpose: C2--ref--000XX.zip File extension is trc, with XX going from 00 to 18 Square wave used as triggering signal for data acquisition: C2--55--00000.trc Particle's signal: C3--55--00XXX.zip File extension is trc, with XXX going from 000 to 688. Figure 1: (b) blue and red line dataset is: C3--55--00XXX.trc and it refers to the experimental time evolution of the standard deviation of the particle position as measured by the photodiode. (b) green line dataset is: C2--55--00000.trc and it refers to the square wave intensity modulation function S(t) also used as triggering signal for data acquisition (c) Dataset is : C3--55--00XXX.trc - experimental time-trace of the phase-space distribution of an initial thermal state of motion of the particle subjected to our protocol. Figure 2: In this figure, multiple datasets are used to create figures 3 (b) and 3 (c), and have been listed as such. (a, b, c) Dataset is: simulated using the Euler-Maruyama numerical integration scheme to solve the Langevin dynamics of a frequency jump expansion protocol, accounting for the nonlinear optical gradient forces arising from the dipole interaction with a Gaussian beam. (d, e, f) Dataset is: C3--55--00XXX.trc - File has been compressed in the upload to the repository. (g, h, i) Dataset is: both C3--55--00XXX.trc and simulated - File has been compressed in the upload to the repository. Figure 3: (a-i) Dataset is: simulated using von-Neumann master equation for open quantum system dynamics including non-linear potential and position localization decoherence. -------------------------- METHODOLOGICAL INFORMATION -------------------------- Description of methods used for collection/generation of data: A silica nanoparticle is trapped by diffraction-limited generated by a parabolic mirror. Each dataset is a save of the voltage induced by self-homodyne power modulation caused by centre-of-mass motion of the trapped particle by detecting a small fraction of Rayleigh back-scattered light from the trapping field with a single photodiode detector. The trapping laser is modulated with a square wave to create parametric modulation for expansion of the particle's state of motion. Methods for processing the data: Data is obtained as a file with voltage and time data, and is processed to a power spectral density when necessary. Software- or Instrument-specific information needed to interpret the data, including software and hardware version numbers: No specific software or hardware is required, although it is convenient to use the python package optoanalysis (https://github.com/AshleySetter/optoanalysis) for analysis. Environmental/experimental conditions: Experiment conducted in a vacuum chamber at 1e-2 mbar at room temperature. People involved with sample collection, processing, analysis, simulations and/or submission: Rafael Muffato Reis, Tiberius Stefan Georgescu and Qiongyuan Wu.