Generators

[georgios-ts]

Unify gates by adding generator, U = exp(- i a / 2 G).

TODO:

• Replace parameter of PowerGate with power . pi and fix this in Compiler.

[georgios-ts]

@kottmanj

[kottmanj]

name can now be auto-assigned by the generator or vice versa

would allow that
give name a default: name=None and just incude some consistency checks below

if name is None and generator is None:
raise TequilaException("name or generator needs to be provided to initialize a power gate")

if name is not None and generator is not None:
#failsafe for standard gates
if name.lower()=="x":
assert generator == paulis.X(target)
etc (would do for X, Y, Z and H)
warnings.warn("name {} and generator {} provided to PowerGate".format(name, generator), TequilaWarning)

[kottmanj]

Looks great!