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How are the gates in a quantum circuit ordered?
Quantum gates are ordered in chronological order with the left-most gate as the gate first applied to the qubits. In other words, if you picture the wires as holding the quantum state, the wires bring the quantum state through each of the gates in the diagram from left to right. That is to say is the unitary matrix CBA C B A .
Why do we need a quantum circuit diagram?
A quantum circuit diagram is a convenient tool for illustrating the operations. The circuit diagram for preparing this maximally entangled quantum state is: Quantum circuit diagram conventions In a circuit diagram, each solid line depicts a qubit or more generally a qubit register.
Which is an example of a quantum circuit?
The above example circuit is depicted as acting on two qubits (or equivalently two registers consisting of one qubit). Gates acting on one or more qubit registers are denoted as a box. For example, the symbol is a Hadamard operation acting on a single-qubit register.
Which is the top line in a quantum circuit diagram?
A quantum circuit diagram is a convenient tool for illustrating the operations. The circuit diagram for preparing this maximally entangled quantum state is: In a circuit diagram, each solid line depicts a qubit or more generally a qubit register. By convention, the top line is qubit register 0 0 and the remainder are labeled sequentially.
What is the top line of a quantum circuit?
By convention, the top line is qubit register 0 0 and the remainder are labeled sequentially. The above example circuit is depicted as acting on two qubits (or equivalently two registers consisting of one qubit). Gates acting on one or more qubit registers are denoted as a box.
How are multi qubit circuit diagrams similar to single qubit circuits?
Multi-qubit circuit diagrams follow similar conventions to single-qubit ones. As a clarifying example, we can define a two-qubit unitary operation B B to be (H S⊗X) ( H S ⊗ X) and express the circuit equivalently as