qit.gate.swap

qit.gate.swap(d1, d2)

Swap gate.

Parameters

• d1 (int) – subsystem 1 dimension

• d2 (int) – subsystem 2 dimension

Returns

SWAP gate which swaps the order of two subsystems with dimensions [d1, d2].

Return type

Lmap

$$S:A_1\otimes A_2\to A_2\otimes A_1,|x,y⟩\mapsto |y,x⟩$$

Note

The actual subsystem order is swapped as well, not just the states of those subsystems. This is only important if d1 != d2.