# RCCXGate

*class *`RCCXGate(label=None)`

Bases: `qiskit.circuit.gate.Gate`

The simplified Toffoli gate, also referred to as Margolus gate.

The simplified Toffoli gate implements the Toffoli gate up to relative phases. This implementation requires three CX gates which is the minimal amount possible, as shown in https://arxiv.org/abs/quant-ph/0312225. Note, that the simplified Toffoli is not equivalent to the Toffoli. But can be used in places where the Toffoli gate is uncomputed again.

This concrete implementation is from https://arxiv.org/abs/1508.03273, the dashed box of Fig. 3.

Can be applied to a `QuantumCircuit`

with the `rccx()`

method.

Create a new simplified CCX gate.

## Attributes

### condition_bits

### decompositions

Get the decompositions of the instruction from the SessionEquivalenceLibrary.

### definition

Return definition in terms of other basic gates.

### duration

Get the duration.

### label

Return instruction label

**Return type**

`str`

### name

Return the name.

### num_clbits

Return the number of clbits.

### num_qubits

Return the number of qubits.

### params

return instruction params.

### unit

Get the time unit of duration.