0.0.5

qgate_builder.dart (was qgates.dart)

Refactored gate builders used when adding a gate to a circuit
- unitary gates = parallel gates operating on one qubit
- controlled gates can now be controlled by several qubits

qcircuit.dart

Simplify QCircuit APIs to support parallel and controlled gates via a single method.
- changed hadamard(), pauliX(), ... to accept a single or a set of qubits as input, optionaly controlled by a single or a set of qubits
- removed parallelHadamard(), controlledHadamard(), parallelPauliX(), controlledPauliX(), ...
Added step-by-step execution to facilitate diagnostics during execution.
Added the possibility to compile a circuit:
- successive measurement gates are reduced to a single step measuring several qubits.
- successive quantum gates are reduced to a single quantum gate obtained by multiplying the gate's matrices together.
- at the end of the compilation process, the circuit is reduced to a sequence of quantum / measurement gates
- if there is no measurement gate, it is reduced to a single quantum gate

example

0.0.1