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in the pair state basisDue to the angular momentum selection rules of the dipole operator V (R), the target pair state can be dipole coupled to pair states with m j = ± , , it is necessary to calculate Stark maps for a range of m j manifoldsFollowing diagonalisation, only pair states with energy close to the target state are

s of basis states pair state interaction potentials [, , ]Figure Overview of the Alkali Rydberg Calculator (ARC) module for PythonObject oriented structure with

Single atom calculations Pair state basis calculations This is a completely new module added in ARC versionSee more at EJRobertson,

By law, most ARC grants require cost share or match fundingApplicants should submit proof of committed match as part of the grant applicationARC state program managers can offer guidance on the amount of match required and available match sources, and provide information about any additional state matching requirementsFederal requirements related to match []

Also, some helpful general functions are here, e.gfor saving and loading calculations (single atom and pair state based), printing state labels etcclass arc.alkali_atom_functions.AlkaliAtom(preferQuantumDefects=True, cpp_numerov=True) [source] ¶Implements general calculations for alkali atoms.

Getting started with ARC Detailed documentation of functionsAlkali atom functions Alkali atom data Divalent atom functions Divalent atom data Single atom calculations Pair state basis calculations Advanced functions How to contribute to the project

ExampleCalculation of the Rydberg eigenstates in pair state basis for Rubidium in the vicinity of the S m j = , S m j = stateColour highlights coupling strength from state P m j = with ( q = ) polarized lighteigenstates

Source code for arc.calculations_atom_pairstate coding utf """ Pair state basis level diagram calculations Calculates Rydberg spaghetti of level diagrams, as well as pertubative C and similar propertiesIt also allows calculation of Foster resonances tuned by DC electric fieldsExample Calculation of the Rydberg eigenstates in