Update documentation on qudits #5196
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| "id": "9c07f9b01c71" | |||
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of the class cirq.Qid class.too much class
>unitary evolution on three qudits, a qubit, a qutrit, and another qutrit,
so six things? 3 + 1 + 1+ 1. Maybe a colon is supposed to be here?
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yeah, think also that we decided that cirq.Class could be used for first instance and then not repeated. For notebooks this doesn't seem to matter as it doesn't deep link.
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Removed outputs from notebook. |
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I just took a look at the beginning of this before realizing how extensive the changes were. I'm OOO until monday, so unassigning myself for review |
docs/qudits.ipynb
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| "id": "9c07f9b01c71" | |||
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| "Most of the time in quantum computation, we work with qubits, which are 2-level quantum systems. A qu-*d*-it is a generalization of a qubit to a d-level or d-dimension system.\n", | |||
| "Most of the time in quantum computation, we work with qubits, which are 2-level quantum systems. But it is possible to also define quantum computation with higher dimensional systems. A qu-*d*-it is a generalization of a qubit to a d-level or d-dimension system. For example, the state of a single qubit is a superposition of two basis states, $|\\psi\\rangle=\\alpha|0\\rangle+\\beta|1\\rangle$, whereas the state of a qudit for a three dimensional system is a superposition of three basis states $|\\psi\\rangle=\\alpha|0\\rangle+\\beta|1\\rangle+\\gamma|2\\rangle$.\n", | |||
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I don't think this is a complete sentence as written. Perhaps change to "However, it is possible..."
docs/qudits.ipynb
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| "\n", | ||
| "Both qubits and qudits are represented by a `Qid` object.\n", | ||
| "To apply a gate to some qudits, the dimensions of the qudits must match the dimensions it works on. For example, if a gate represents a unitary evolution on three qudits, a qubit, a qutrit, and another qutrit, the gate's \"qid shape\" is `(2, 3, 3)` and its `on` method will accept exactly 3 `Qid`s with dimension 2, 3, and 3, respectively.\n", |
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Maybe add a colon or something here (or parentheses) to show that the qubit, qutrit and qutrit are the 3 qudits.
For example, if a gate represents a unitary evolution on three qudits**:** a qubit, a qutrit, and another qutrit, then the gate's ...
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rewrote as three sentences to make clearer.
docs/qudits.ipynb
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| " \n", | ||
| " This gate acts on three-level systems. In the computational basis of\n", | ||
| " this system it enacts the transformation U|x> = |x + 1 mod 3>, or\n", | ||
| " in other words U|0> = |1>, U|1> = |2>, and U|2> = |0>.\n", |
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Optional. Consider using right angle bracket "〉" rather than ">".
| " def _qid_shape_(self):\n", | ||
| " # By implementing this method this gate implements the\n", |
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Optional: Can this be a docstring with triple quotes rather than line comments? Same below.
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