| measure {QuantumOps} | R Documentation |
measure
Description
Probabilistically measures the input ket. By default measures all qubits, but if a list of integers is supplied it will measure only those qubits. Returns a list containing the state of the ket after measurement along with integer value of the state that was measured. Additionally, returns a vector of the measured binary values, if a list of qubits to measure was specified.
Usage
measure(...,l2r=FALSE)
Arguments
... |
The input ket to measure. Optionally followed by integers specifying which qubits of the ket to measure. Qubits indexed from 0 from right to left |
l2r |
Boolean which specifices if indexing should be performed from left to right. Is FALSE by default to maintain backwards compatibility, however all other functions index from left to right. |
Value
A list with the first item a column vector containing normalized amplitudes of the measured ket and the second item the integer value of the state which was measured. If a list of qubits to measure was specified as an argument, there is a 3rd item in the list which is a vector of the binary measured values.
Examples
measure(ket(1,0),l2r=TRUE)
measure(ket(1,2,2,1),0,l2r=TRUE)
measure(ket(1,2,3,4,5,6,7,8),0,l2r=TRUE)
measure(ket(1,2,3,4,5,6,7,8),0,1,l2r=TRUE)
measure(ket(1,2,3,4,5,6,7,8),0,1,2,l2r=TRUE)