cntrld {QuantumOps}

cntrld

Description

Creates a matrix representing a controlled gate on a system of qubits. The target and control qubits can be located at arbitrarying positions.

Usage

cntrld(gate,n,...)

Arguments

gate

single qubit gate to create controlled version of

n

Number of qubits in the ket, including target, control, and all other qubits

...

List of qubits. The last qubit in the list is the target. Any others listed before it are control qubits. Can be any number between 1 and n-1 control qubits, where n is the number of qubits in the ket. Qubits are indexed from 0, starting at the most significant qubit

Value

A matrix representing the operation of a controlled qubit gate on any subset of the input ket

Examples

 cntrld(X(),2,0,1)
 cntrld(X(),2,1,0)
 cntrld(Y(),4,2,3)
 cntrld(X(),8,0,5)