﻿This THESISDATAreadme.txt file was generated on 2022-10-31 by STEFAN SPENCE


GENERAL INFORMATION

1. Title of Dataset: Assembling Single RbCs Molecules with Optical Tweezers

2. Author Information
	A. Author Contact Information
		Name: Stefan Spence
		Institution: Durham Unversity
		Address: The Palatine Centre, Durham University, Stockton Road, Durham, DH1 3LE
		Email: s.j.spence@durham.ac.uk

	B. Supervisor Contact Information
		Name: Simon Cornish
		Institution: Durham Unversity
		Address: The Palatine Centre, Durham University, Stockton Road, Durham, DH1 3LE
		Email: s.l.cornish@durham.ac.uk

	C. Alternate Contact Information
		Name: Alexander Guttridge
		Institution: Durham University
		Address: The Palatine Centre, Durham University, Stockton Road, Durham, DH1 3LE
		Email: alexander.guttridge@durham.ac.uk

3. Date of data collection (single date, range, approximate date): 
2018-09-01 until 2022-09-01

4. Geographic location of data collection:
Durham, County Durham, United Kingdom. 

5. Information about funding sources that supported the collection of the data: 
This work was supported by U.K. Engineering and Physical Sciences Research Council (EPSRC) Grant EP/P01058X/1 and Durham University.


SHARING/ACCESS INFORMATION

1. Licenses/restrictions placed on the data: 
Copyright of this thesis is held by the author.

2. Links to publications that cite or use the data: 

3. Links to other publicly accessible locations of the data: 

4. Links/relationships to ancillary data sets: 

5. Was data derived from another source? no

6. Recommended citation for this dataset: 
S. Spence, "Assembling Single RbCs Molecules with Optical Tweezers", PhD Thesis, Durham University, 2023

DATA & FILE OVERVIEW

1. File List: 
fitandgraph.py
	A python module for plotting graphs.
python_environment.yml
	A Conda environment including all of the required modules for running the Python scripts in this dataset.
vinstyle.mplstyle
	A Matplotlib Stylesheet.
/1_Introduction:
	Figures for Chapter 1: Introduction.
/2_Apparatus:
	Figures and data for Chapter 2: Experimental Apparatus.
		/2DAOD:
			Figures and data for the two-axis AOD.
				/DE:
					Measurements of diffraction efficiency.
				/FSR:
					Measurements of free spectral range.
				/Normalisation:
					Analysis of CCD images of an array of traps.
				/Saturation:
					Measurements of trap powers as a function of total input RF power.
		/CellAndOptics:
			Figures for the vacuum chamber, cell, beam layout, and associated optics
		/ImageProcessing:
			Figure and data for the example histogram.
		/LaserTransitions:
			Figure for the atomic transitions and laser frequencies.
		/PyDexOverview:
			Figure for the overview of software and hardware connections.
/3_SingleAtomControl:
	Figures and data for Chapter 3: Single Atom Control
		/mw:
			Figures and data for measurements of MW transitions.
		/OpticalPumping:
			Figures and data for optical pumping fidelity measurements.
				/icons:
					Figures for icons that illustrate different stages of optical pumping.
				/op_depump:
					Measurements of the depumping time when applying OP^\uparrow light.
				/op_time:
					Measurements of the optical pumping time when applying both optical pumping beams.
				/qwp:
					Measurements of the optical pumping fidelity as a function of quarter waveplate angle.
				/shims:
					Measurements of the optical pumping fidelity as a function of the orthogonal shim field applied.
				/trap_depump:
					Measurements of the depumping time when holding the atoms in the trap.
		/Overlap:
			Figures and data for calibrating the positions of the tweezers relative to each other.
		/Rearrangement:
			Figures and data for illustrating the rearrangement process and measured loading probability after rearrangement.
		/spam_fidelity:
			Figures and data for measurements of the state preparation and measurement fidelity.
		/Temperature:
			Figures and data for measurements of the temperature.
		/Tweezer_waist:
			Figures and data for measurements of the tweezer beam waist.
				/4traparray:
					Survival probabilities for parametric heating measurements in a 1D array of 4 traps.
				/ZK_optimisation:
					Survival probabilities for parametric heating measurements of a trap with Zernike polynomial modification.
/4_RSCTheory:
	Figures and data for Chapter 4: Designing the Protocol for Raman Sideband Cooling
		/HigherSidebandPulses:
			Figures and generating script for simulations of applying Raman pulses on different motional sidebands.
		/IdealParams:
			Figures and generating scripts for simulations of Raman sideband cooling with varying parameters.
		/Optics&Hardware:
			Figures illustrating the RSC pulse sequence.
		/PulseShapeExcitation:
			Figures and generating scripts for illustrating the off-resonant excitation caused by applying a sideband Raman pulse.
		/Transitions:
			Figures illustrating relevant transitions between hyperfine states.
/5_RSCExperiment:
	Figures and data for Chapter 5: Preparing an Atom Pair in the Motional Ground State.
		/4TrapArray:
			Figures and data for sideband spectroscopy of Rb atoms after RSC in a 1D array of 4 traps.
		/MergedSpec:
			Figures and data for measuring the motional level after merging a Rb atom or a Cs atom into a 1064nm tweezer.
		/RabiOscillationsFreqNoise:
			Figures and data for measuring the dephasing of Rabi oscillations in different wavelength tweezers.
		/SidebandSpec:
			Figures and data for measurements of sideband spectroscopy after applying an RSC pulse sequence.
/6_Association:
	Figures and data for Chapter 6: Association.
		/Associate_Ramp_End:
			Figures and data for measurements of the 0 atom recapture after applying magnetic field ramps
		/Bfield_DAQ:
			Figures illustrating the magnetic field ramps used in association experiments.
		/Detection_possibilities:
			Figures and data illustrating the different outcomes of an experiment that holds a Rb and a Cs atom in a common tweezer.
		/FB_molecule_lifetimes:
			Figures and data for measurements of the lifetime of Feshbach molecules in different wavelength tweezers.
		/Optimise:
			FIgures and data for optimising the experimental routine used to associate atoms.
		/Stark_shifted_PA_loss:
			Figures and data for measurements of 2-body loss when holding atoms near to a magnetic Feshbach resonance in different wavelength tweezers.
		/Theory:
			Figures and generating scripts for theoretical predictions of molecular bound state wavefunctions, energies, and scattering lengths.
/7_Outlook:
	Figures and data for Chapter 7: Conclusion and Outlook.
		/FB_binding_energy:
			Figures and data for single-photon spectroscopy of the molecular binding energy.
		/STIRAP:
			Figures and generating script for illustrating the STIRAP process.

2. Relationship between files, if important: 

3. Additional related data collected that was not included in the current data package: 

4. Are there multiple versions of the dataset? no

METHODOLOGICAL INFORMATION

1. Description of methods used for collection/generation of data: 
An optical tweezer experiment prepares single Rb atoms and single Cs atoms.
The atoms are manipulate by applying laser cooling, optical pumping, Mw fields, and external magnetic fields.
See:
S. Spence et al.,  New J. Phys. 24 (2022) 103022

2. Methods for processing the data: 
The output of the experiment is the probability of detecting an atom in a final image.
Python scripts included in the dataset convert measured probabilities into the displayed figures.

3. Instrument- or software-specific information needed to interpret the data: 
Python 3.5
install the modules in python_environment.yml

4. Standards and calibration information, if appropriate: 

5. Environmental/experimental conditions: 
The room temperature is stabilised by an air conditioning system to 21+/-1 deg C
The humidity is stabilised by a dehumidifier to 35+/-5%

6. Describe any quality-assurance procedures performed on the data: 

7. People involved with sample collection, processing, analysis and/or submission: 
Stefan Spence, Alexander Guttridge, Daniel Ruttley, Vincent Brooks.

