added TOC to CNOT-Dihedral RB tutorial

Author: ShellyGarion

qiskit/advanced/ignis/5d_cnot_dihedral_rb.ipynb

@@ -23,15 +23,12 @@
     "\n",
     "This notebook gives an example for how to use the ``ignis.verification.randomized_benchmarking`` module in order to perform interleaved RB.\n",
     "\n",
-    "This notebook contains the following steps.\n",
+    "## Table of Contents\n",
     "\n",
-    "1) Select the parameters for the non-Clifford CNOT-Dihedral RB and generate the RB sequences.\n",
-    "\n",
-    "2) Execute the RB circuits using Qiskit Aer Simulator (with some noise model).\n",
-    "\n",
-    "3) Fit the results and calculate the fidelity.\n",
-    "\n",
-    "4) Possible generalizations: generate non-Clifford CNOT-Dihedral RB sequences for interleaved RB and purity RB."
+    "1. [Select the parameters and generate CNOT-Dihedral RB sequences](#gen_RB_seq)\n",
+    "2. [Execute CNOT-Dihedral RB sequences](#ex_RB_seq)\n",
+    "3. [Fit CNOT-Dihedral RB results](#fit_RB)\n",
+    "4. [Generate interleaved and purity CNOT-Dihedral RB sequnces](#int_pur_RB)"
    ]
   },
   {
@@ -58,7 +55,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "## 1.1) Select the parameters of the non-Clifford CNOT-Dihedral RB run\n",
+    "## 1.1) Select the parameters of the non-Clifford CNOT-Dihedral RB run <a name='gen_RB_seq'></a>\n",
     "\n",
     "First, we need to choose the regular RB parameters:\n",
     "\n",
@@ -236,7 +233,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "## 2) Define the noise model and execute the RB circuits\n",
+    "## 2) Define the noise model and execute the RB circuits <a name='ex_RB_seq'></a>\n",
     "\n",
     "We define a noise model for the simulator. To simulate decay, we add depolarizing error probabilities to the CNOT and U gates."
    ]
@@ -350,7 +347,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "## 3) Fit the results\n",
+    "## 3) Fit the CNOT-Dihedral RB results <a name='fit_RB'></a>\n",
     "\n",
     "We fit the results of the non-Clifford CNOT-Dihedral Z RB circuits and the non-Clifford CNOT-Dihedral X RB circuits into an exponentially decaying function and obtain the Errors per group element $\\alpha_Z$ and $\\alpha_R$ of the Z and X sequences respectively."
    ]
@@ -583,7 +580,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "## 4.1) Generating interleaved non-Clifford cnot-dihedral sequences\n",
+    "## 4.1) Generate interleaved non-Clifford cnot-dihedral sequences <a name='int_pur_RB'></a>\n",
     "\n",
     "We provide the same parameters as before including a list of interleaved gated.\n",
     "\n",
@@ -825,7 +822,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "## 4.2) Generating purity non-Clifford cnot-dihedral sequences\n",
+    "## 4.2) Generate purity non-Clifford cnot-dihedral sequences\n",
     "\n",
     "We provide the same parameters as before and the following parameter for purity rb.\n",
     "\n",