Bases: pyCTQW.MPI.ctqw.QuantumWalkP3
Performs and analyses 3 particle continuous-time quantum walks on an infinite line
| Parameters: | N (int) – an even number of nodes to initialize the walker with. Nodes are labeled \(j\in\{1-N/2,N/2\}\). |
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Example
To create a CTQW Line object for a 10 node line,
>>> walk = pyCTQW.MPI.Line3P(10)
| Line3P.createH([d, amp, interaction]) | Generate the Hamiltonian of the graph. |
| Line3P.createInitState(initState) | Generate the initial state of the quantum walk. |
| Line3P.destroy() | Destroys the 3 particle quantum walk object, and all associated PETSc matrices/vectors. |
| Line3P.exportState(filename, filetype) | Exports the final state psi of the quantum walk to a file. |
| Line3P.importInitState(filename, filetype) | Imports the initial state of the quantum walk from a file. |
| Line3P.plot(filename) | Creates a plot of probability vs node. |
| Line3P.plotEntanglement(filename) | Creates a plot of the entanglement over time. |
| Line3P.plotNode(filename, node[, t]) | Creates a plot of the marginal probablities on a specified node over time. |
| Line3P.plotNodes(filename[, p, t]) | Creates a plot of the node probablities over time. |
| Line3P.propagate(t[, method]) | Propagates the quantum walk for time t. |
| Line3P.psiToInit() | Copies the state psi to psi0. |
| Line3P.watch(nodes[, type]) | Creates a handle that watches either marginal probability or walker entanglement during propagation. |
| Attribute | Type | Description |
| Line3P.psi0 | petsc4py.PETSc.Vec() | \(N^3\) element PETSc vector containing the initial state |
| Line3P.psi | petsc4py.PETSc.Vec() | \(N^3\) element PETSc vector containing the final state after the last propagation. |
| Line3P.psiX | petsc4py.PETSc.Vec() | \(N\) element PETSc vector containing the marginal propability of particle 1 |
| Line3P.psiY | petsc4py.PETSc.Vec() | \(N\) element PETSc vector containing the marginal propability of particle 2 |
| Line3P.psiZ | petsc4py.PETSc.Vec() | \(N\) element PETSc vector containing the marginal propability of particle 3 |
| Line3P.H | pyCTQW.MPI.ctqw.Hamiltonian() | Hamiltonian matrix |
| Line3P.EigSolver | pyCTQW.MPI.ctqw.EigSolver() | The Hamiltonian eigensolver |
| Line3P.handle | pyCTQW.MPI.ctqw.nodeHandle() | A node handle, created if nodes are being watched for probability. |
| Line3P.entanglementHandle | pyCTQW.MPI.ctqw.entanglementHandle() | A node handle, created if the entanglement is being watched. |