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Correct operator ordering #1480

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merged 2 commits into from
Jun 3, 2024
Merged

Correct operator ordering #1480

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eb8c381
Fixed operator order in ZZ expval desc
shraddha-aangiras Jun 2, 2024
c5c83c4
Changed ZZ expval ordering in explanation
shraddha-aangiras Jun 2, 2024
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4 changes: 2 additions & 2 deletions docs/start/hello-world.ipynb
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Expand Up @@ -151,9 +151,9 @@
"metadata": {},
"source": [
"<Admonition type=\"note\" title=\"Operator Notation\">\n",
"Here, something like the `ZZ` operator is a shorthand for the tensor product $Z\\otimes Z$, which means measuring Z on qubit 0 and Z on qubit 1 together, and obtaining information about the correlation between qubit 0 and qubit 1. Expectation values like this are also typically written as $\\langle Z_0 Z_1 \\rangle$.\n",
"Here, something like the `ZZ` operator is a shorthand for the tensor product $Z\\otimes Z$, which means measuring Z on qubit 1 and Z on qubit 0 together, and obtaining information about the correlation between qubit 1 and qubit 0. Expectation values like this are also typically written as $\\langle Z_1 Z_0 \\rangle$.\n",
"\n",
"If the state is entangled, then the measurement of $\\langle Z_0 Z_1 \\rangle$ should be 1.\n",
"If the state is entangled, then the measurement of $\\langle Z_1 Z_0 \\rangle$ should be 1.\n",
"</Admonition>"
]
},
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