MathJax.Hub.Config({
  TeX: {
    Macros: {
      D: "{\\mathrm{d}}",
      ket: ["{\\left \\lvert #1 \\right \\rangle}",1],
      bra: ["{\\left \\langle #1 \\right \\rvert}",1],
      braket: ["{\\left \\langle #1 \\middle \\vert #2 \\right \\rangle }",2],
      sand: ["{\\left \\langle #1 \\middle \\vert #2 \\middle \\vert #3 \\right \\rangle}",3],
      ketbra: ["{\\left \\lvert #1 \\middle \\rangle \\middle \\langle #2 \\right \\rvert}",2],
      proj: ["{\\ketbra{#1}{#1}}",1],
      Abs: ["{\\left \\lvert #1 \\right \\rvert}",1],
      Expect: ["{\\left \\langle #1 \\right \\rangle}",1],
      QProb: ["{\\Abs{\\braket{#1}{#2}}^2}",2]
    }
  }
});