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-rwxr-xr-xmathemathica_fwm/RbXMDSSetup.nb4649
1 files changed, 2327 insertions, 2322 deletions
diff --git a/mathemathica_fwm/RbXMDSSetup.nb b/mathemathica_fwm/RbXMDSSetup.nb
index 801b4c4..3339dc7 100755
--- a/mathemathica_fwm/RbXMDSSetup.nb
+++ b/mathemathica_fwm/RbXMDSSetup.nb
@@ -1,2322 +1,2327 @@
-Notebook[{
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-Pull quantum numbers and other basic info about the states from a database.\
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-Using the quantum numbers, create a list of all hyperfine and Zeeman \
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-The level diagram for the system, showing optical couplings. Note that both \
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+The Hamiltonian for the system subject to the optical field. Each field is \
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+The level diagram for the system, showing optical couplings. Note that both \
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+ "Here we apply the rotating-wave approximation to the Hamiltonian. Here we \
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+Find the frequencies at which each field is assumed to be resonant with its F\
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+ CellID->645617687],
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+Cell[TextData[{
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+ BaseStyle->"Link",
+ ButtonData->"paclet:AtomicDensityMatrix/ref/OpticalRepopulation"]]],
+ " and ",
+ Cell[BoxData[
+ ButtonBox["TransitRepopulation",
+ BaseStyle->"Link",
+ ButtonData->"paclet:AtomicDensityMatrix/ref/TransitRepopulation"]]],
+ " supply the matrices describing repopulation of the ground state due to \
+spontaneous decay and atomic transit."
+}], "Text",
+ CellID->854192725],
+
+Cell[BoxData[
+ RowBox[{"MatrixForm", "[",
+ RowBox[{"repop", "=",
+ RowBox[{
+ RowBox[{"OpticalRepopulation", "[", "system", "]"}], "+",
+ RowBox[{"TransitRepopulation", "[",
+ RowBox[{"system", ",", "\[Gamma]t"}], "]"}]}]}], "]"}]], "Input",
+ CellID->465762594],
+
+Cell["Here are the evolution equations.", "Text",
+ CellID->314466782],
+
+Cell[BoxData[
+ RowBox[{"TableForm", "[",
+ RowBox[{"eqs0", "=",
+ RowBox[{"LiouvilleEquation", "[",
+ RowBox[{"system", ",", "Hrwa", ",", "relax", ",", "repop"}], "]"}]}],
+ "]"}]], "Input"],
+
+Cell["\<\
+Here we pull useful numerical atomic data for Rb out of the database. These \
+numbers are in omega units, so that the unit \[OpenCurlyDoubleQuote]Hertz\
+\[CloseCurlyDoubleQuote] actually corresponds to rad/s.\
+\>", "Text"],
+
+Cell[BoxData[
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+ RowBox[{"{", "HyperfineA", "}"}], ",",
+ RowBox[{"Label", "\[Rule]", "0"}]}], "]"}], ",",
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+ RowBox[{"{",
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+ RowBox[{"{",
+ RowBox[{"HyperfineA", ",", "HyperfineB", ",", "NaturalWidth"}], "}"}],
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+ RowBox[{"Label", "\[Rule]", "2"}]}], "]"}], ",",
+ RowBox[{"{",
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+ RowBox[{"{",
+ RowBox[{"\"\<Rb\>\"", ",", "87", ",",
+ RowBox[{"{",
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+ RowBox[{"{",
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+ RowBox[{"{",
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+ FractionBox["1", "2"]}], "}"}]}], "}"}], "]"}]}]}], ",",
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+ FractionBox["3", "2"]}], "}"}]}], "}"}], "]"}]}]}]}], "}"}]}],
+ "]"}]}]], "Input"],
+
+Cell[TextData[{
+ "Here we find DM elements that are always identically zero, so we can remove \
+them from the evolution equations. We put in sample values for all of the \
+parameters, use the values for the atomic data from above, and set time \
+derivatives to zero with ",
+ Cell[BoxData[
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+ " to find the steady state. "
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+ RowBox[{"Mega", "\[Rule]", "1"}]}], "/.",
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+ RowBox[{"DMVariables", "[", "system", "]"}]}], "]"}], "[",
+ RowBox[{"[", "1", "]"}], "]"}]}], ";"}]], "Input"],
+
+Cell["\<\
+Find the position in the solution list of all of the DM elements that are \
+zero.\
+\>", "Text"],
+
+Cell[BoxData[
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+
+Cell["\<\
+Find the list of DM elements that correspond to these zero positions.\
+\>", "Text"],
+
+Cell[BoxData[
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+ RowBox[{"Extract", "[",
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+
+Cell["Create a list of rules to set these DM elements to zero.", "Text"],
+
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+
+Cell["\<\
+Find the list of variables corresponding to nonzero DM elements.\
+\>", "Text"],
+
+Cell[BoxData[
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+ RowBox[{"Delete", "[",
+ RowBox[{
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+
+Cell["\<\
+Remove all of the zero elements from the evolution equations.\
+\>", "Text"],
+
+Cell[BoxData[
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+ RowBox[{"Delete", "[",
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+ "]"}]], "Input"],
+
+Cell["Initial conditions for the time-dependent case.", "Text"],
+
+Cell[BoxData[
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+
+Cell[TextData[{
+ "Find equations for the steady state by setting time derivatives to zero. We \
+also substitute in numerical values for natural widths in units of ",
+ Cell[BoxData[
+ FormBox[
+ SuperscriptBox["10", "6"], TraditionalForm]]],
+ " rad/s."
+}], "Text"],
+
+Cell[BoxData[
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+ RowBox[{
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+ RowBox[{"Hertz", "\[Rule]", "1"}]}], "/.",
+ RowBox[{"Mega", "\[Rule]", "1"}]}], "/.",
+ RowBox[{
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+ "0"}]}]}]], "Input"],
+
+Cell[TextData[{
+ "Here we find expressions for the fractional absorption (change in \
+electric-field amplitude) and phase shift of the probe light per unit path \
+length and unit atomic density, i.e., ",
+ Cell[BoxData[
+ FormBox[
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+ ",",
+ Cell[BoxData[
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+ "}. These correspond to the imaginary and real parts of the index of \
+refraction, respectively. Since the probe light does not interact with the D2 \
+transition, we set DM elements involving the ",
+ Cell[BoxData[
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+ SubscriptBox["P",
+ RowBox[{"3", "/", "2"}]], TraditionalForm]]],
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+We find the expressions for arbitrary ellipticity and then set ellipticity to \
+\[Pi]/4 after simplification in order to avoid an artificial divide by zero \
+problem."
+}], "Text"],
+
+Cell[BoxData[{
+ RowBox[{
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+ RowBox[{"\[Epsilon]", "\[Rule]",
+ RowBox[{"\[Pi]", "/", "4"}]}]}]}]}], "Input"],
+
+Cell["\<\
+Calculate linear probe absorption with weak probe light on resonance and no \
+pump to find reference level\
+\>", "Text"],
+
+Cell[BoxData[{
+ RowBox[{
+ RowBox[{"params", "=",
+ RowBox[{"{",
+ RowBox[{
+ RowBox[{
+ SubscriptBox["\[CapitalOmega]", "1"], "\[Rule]", "0"}], ",",
+ RowBox[{
+ SubscriptBox["\[CapitalOmega]", "2"], "\[Rule]", ".00001"}], ",",
+ RowBox[{
+ SubscriptBox["\[CapitalOmega]", "3"], "\[Rule]", "0"}], ",",
+ RowBox[{
+ SubscriptBox["\[CapitalOmega]", "4"], "\[Rule]", "0"}], ",",
+ RowBox[{
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+ RowBox[{
+ SubscriptBox["\[Delta]", "1"], "\[Rule]", "0"}], ",",
+ RowBox[{
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+ RowBox[{"\[CapitalOmega]L", "\[Rule]", "0"}]}], "}"}]}],
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+ "params"}]}]}], "Input"],
+
+Cell["\<\
+Divide fractional absorption and phase shift by the linear absorption per \
+unit length to find observables per absorption length.\
+\>", "Text"],
+
+Cell[BoxData[
+ RowBox[{"obs", "=",
+ RowBox[{
+ RowBox[{"{",
+ RowBox[{
+ RowBox[{"-", "1"}], ",", "1"}], "}"}],
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+}, Open ]],
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+Cell[CellGroupData[{
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+Cell["Plot steady-state results", "Section"],
+
+Cell[BoxData[
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+ RowBox[{"Axes", "\[Rule]", "False"}], ",",
+ RowBox[{"PlotRange", "\[Rule]", "All"}]}], "]"}], ";"}]], "Input"],
+
+Cell["\<\
+Here we set parameters and plot the fractional absorption and phase shift of \
+the probe light per absorption length, corresponding to imaginary and real \
+parts of the index of refraction, respectively, as a function of probe \
+detuning.\
+\>", "Text"],
+
+Cell[BoxData[{
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+
+Cell["Plot atomic populations for a given set of parameters.", "Text"],
+
+Cell[BoxData[{
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+Cell[CellGroupData[{
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+Cell["Eliminate conjugate DM variables", "Section"],
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