JSci.physics.quantum

Class DensityMatrix

java.lang.Object

JSci.physics.quantum.Operator

JSci.physics.quantum.DensityMatrix

All Implemented Interfaces:

java.io.Serializable, Member

public final class DensityMatrix
extends Operator

The DensityMatrix class provides an object for encapsulating density matrices.

Version:

1.5

Author:

Mark Hale

See Also:

Serialized Form

Field Summary

Fields inherited from class JSci.physics.quantum.Operator

representation

Constructor Summary

Constructors

Constructor and Description
DensityMatrix(KetVector[] kets, double[] probs) Constructs a density matrix.
DensityMatrix(Projector[] projs, double[] probs) Constructs a density matrix.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	isPureState() Returns true if this density matrix is a pure state.

Methods inherited from class JSci.physics.quantum.Operator

add, dimension, equals, getRepresentation, hashCode, isSelfAdjoint, isUnitary, multiply, multiply, norm, subtract, toString, trace

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

DensityMatrix

public DensityMatrix(KetVector[] kets,
             double[] probs)

Constructs a density matrix.

Parameters:

kets - an array of ket vectors

probs - the probabilities of being in the ket vector states.

DensityMatrix

public DensityMatrix(Projector[] projs,
             double[] probs)

Constructs a density matrix.

Parameters:

projs - an array of projectors

probs - the probabilities of being in the projector states.

Method Detail

isPureState

public boolean isPureState()

Returns true if this density matrix is a pure state.