Class Dgate

• Defined in File BlackbirdProgram.h

Inheritance Relationships

Base Type

• public blackbird::Operation (Class Operation)

Class Documentation

class blackbird::Dgate : public blackbird::Operation

Represents the displacement gate. For more details, see the Strawberry Fields convention page.

Displacement gate parameter \(\alpha\) accessible via:

• \(|\alpha|\): Dgate->f1

• \(\text{arg}(\alpha)\): Dgate->f2

Public Functions

inline Dgate(floatvec displacement_phase, intvec m)

Constructor to initialize a displacement gate acting on mode m

Parameters

• displacement_phase – vector<double> of length 2 containing the displacement magnitude and phase

• m – mode gate acts on

inline Dgate(complexvec alpha, intvec m)

Constructor to initialize a displacement gate acting on mode m

Parameters

• alpha – vector<complex<double>> of length 1 containing the displacement as a complex value

• m – mode gate acts on

inline Dgate(intvec x, intvec m)

Constructor that throws an error if integer parameters are provided.

Parameters

• x – vector<int> parameters

• m – mode gate acts on

Throws

invalid_argument – Operation must have real arguments