edu.buffalo.fs7.mathlib
Class Measurement

java.lang.Object
  |
  +--edu.buffalo.fs7.mathlib.MathObject
        |
        +--edu.buffalo.fs7.mathlib.MathMap
              |
              +--edu.buffalo.fs7.mathlib.Measurement

All Implemented Interfaces:

java.lang.Cloneable

public class Measurement

extends MathMap

class representing the process of measurement. It implements a full measurement as well as a partial measurement of one qubit. The full measurement is implemented as a MathMap since and the partial measurement can be accessed with a gate of the notation {-:!:-:-:-:-}, which would measure the second qubit and renormalize the state. This class also provides a method to give the probability distribution of the state vector.

See Also:

BinaryOp

Fields inherited from class edu.buffalo.fs7.mathlib.MathObject

mathlib

Constructor Summary

Measurement()
create a measurement map for a full measurement

Method Summary

MathObject	apply(MathObject o) applying a full measurement to a ket vector
double	getLastProbability() saves the probability of the latest measurement outcome
static java.util.Vector	getPhaseDistribution(Braket q, int[] qubits) returns the real and imaginary parts of a register of qubits
static java.util.Vector	getProbDistribution(Braket q, int[] qubits) returns the probability distribution for the outcome of a particular basis ket when performing a measurement without actually performing a measurement.
static void	partialMeasurement(Braket q, int qubit) performing a partial measurement to the qubit given.
java.lang.String	toString() string representation of the measurement map

Methods inherited from class edu.buffalo.fs7.mathlib.MathObject

clone, toParseableString

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Measurement

public Measurement()

create a measurement map for a full measurement

Method Detail

apply

public MathObject apply(MathObject o)

applying a full measurement to a ket vector

Overrides:

apply in class MathMap

partialMeasurement

public static void partialMeasurement(Braket q,
                                      int qubit)

performing a partial measurement to the qubit given. It renormalizes the ket vector afterwards.

See Also:

BinaryOp.implicitApply(Gate, Braket, Matrix)

getProbDistribution

public static java.util.Vector getProbDistribution(Braket q,
                                                   int[] qubits)

returns the probability distribution for the outcome of a particular basis ket when performing a measurement without actually performing a measurement. The array qubits specifies which qubits are considered.

getPhaseDistribution

public static java.util.Vector getPhaseDistribution(Braket q,
                                                    int[] qubits)

returns the real and imaginary parts of a register of qubits

getLastProbability

public double getLastProbability()

saves the probability of the latest measurement outcome

toString

public java.lang.String toString()

string representation of the measurement map

Overrides:

toString in class MathObject

Following copied from class: edu.buffalo.fs7.mathlib.MathObject

See Also:

MathObject.toParseableString()