sf.ops.Zgate¶
-
class
Zgate
(p)[source]¶ Bases:
strawberryfields.ops.Gate
Momentum displacement gate.
\[Z(p) = e^{i p \hat{x}/\hbar}\]- Parameters
p (float) – momentum displacement
Details and Conventions
Definition
The pure position displacement operator is defined as
\[Z(p) = D\left(i p/\sqrt{2 \hbar}\right) = \exp(i p \x /\hbar ), \quad Z^\dagger(p) \p Z(p) = \p +p\I,\]where \(D\) is the displacement gate.
Attributes
Returns a copy of the gate with the self.dagger flag flipped.
Extra dependencies due to parameters that depend on measurements.
-
H
¶ Returns a copy of the gate with the self.dagger flag flipped.
H stands for hermitian conjugate.
- Returns
formal inverse of this gate
- Return type
Gate
-
measurement_deps
¶ Extra dependencies due to parameters that depend on measurements.
- Returns
dependencies
- Return type
set[RegRef]
-
ns
= 1¶
Methods
apply
(reg, backend, **kwargs)Ask a backend to execute the operation on the current register state right away.
decompose
(reg, **kwargs)Decompose the operation into elementary operations supported by the backend API.
merge
(other)Merge the operation with another (acting on the exact same set of subsystems).
-
apply
(reg, backend, **kwargs)¶ Ask a backend to execute the operation on the current register state right away.
Like
Operation.apply()
, but takes into account the special nature of p[0] and applies self.dagger.- Returns
Gates do not return anything, return value is None
- Return type
None
-
decompose
(reg, **kwargs)¶ Decompose the operation into elementary operations supported by the backend API.
Like
Operation.decompose()
, but applies self.dagger.
-
merge
(other)¶ Merge the operation with another (acting on the exact same set of subsystems).
Note
For subclass overrides: merge may return a newly created object, or self, or other, but it must never modify self or other because the same Operation objects may be also used elsewhere.
- Parameters
other (Operation) – operation to merge this one with
- Returns
other * self. The return value None represents the identity gate (doing nothing).
- Return type
Operation, None
- Raises
MergeFailure – if the two operations cannot be merged