# Circuit Plot¶

Matplotlib based plotting of quantum circuits.

Todo:

• Optimize printing of large circuits.
• Get this to work with single gates.
• Do a better job checking the form of circuits to make sure it is a Mul of Gates.
• Get multi-target gates plotting.
• Get initial and final states to plot.
• Get measurements to plot. Might need to rethink measurement as a gate issue.
• Get scale and figsize to be handled in a better way.
• Write some tests/examples!
sympy.physics.quantum.circuitplot.labeller(n, symbol='q')[source]

Autogenerate labels for wires of quantum circuits.

Parameters: n : int number of qubits in the circuit symbol : string A character string to precede all gate labels. E.g. ‘q_0’, ‘q_1’, etc. >>> from sympy.physics.quantum.circuitplot import labeller >>> labeller(2) [‘q_1’, ‘q_0’] >>> labeller(3,’j’) [‘j_2’, ‘j_1’, ‘j_0’]
class sympy.physics.quantum.circuitplot.Mz[source]

Mock-up of a z measurement gate.

This is in circuitplot rather than gate.py because it’s not a real gate, it just draws one.

class sympy.physics.quantum.circuitplot.Mx[source]

Mock-up of an x measurement gate.

This is in circuitplot rather than gate.py because it’s not a real gate, it just draws one.

sympy.physics.quantum.circuitplot.CreateCGate(name, latexname=None)[source]

Use a lexical closure to make a controlled gate.