SILVER-SWORD

Common Lisp interface to D-Wave's Python Pack for adiabatic quantum computer energy programming, including translations of tutorials into CL.

Documentation

Documentation and Tutorials available at: http://thephoeron.viewdocs.io/silver-sword

Usage

A good place to start is with the tutorial hello-multiverse.lisp. Take a moment to review the code and make note of the following points:

• The SOLVE-ISING function expects the name of a local solver as a string, the qubit energies as a list, the couplers to energies as a hash-table, and a number of optional keyword arguments. It returns a hash-table with the slots solutions, energies, and num_occurences.
• Since the Python Pack is based on the architecture of the D-Wave One adiabatic quantum computer, a maximum of 128 qubits and 352 couplers is available.

Load SILVER-SWORD and its tutorial package with quicklisp:

* (ql:quickload '("silver-sword" "silver-sword-tutorials"))

Run the hello-multiverse wrapper function:

* (sst:hello-multiverse)

You should see a result similar to this:

For #<HASH-TABLE :TEST EQUAL :COUNT 3 {100747FCE3}>
"energies": #(-3.4000000000000004 -1.4000000000000004)
"num_occurrences": #(99 1)
"solutions": #(#(3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
                 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 -1 1 3 3 1 -1 3
                 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
                 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
                 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3)
               #(3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
                 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 -1 1 3 3 -1 -1 3
                 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
                 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
                 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3))
Solutions: #(#(3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
               3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 -1 1 3 3 1 -1 3 3 3 3 3 3 3 3 3
               3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
               3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
               3)
             #(3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
               3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 -1 1 3 3 -1 -1 3 3 3 3 3 3 3 3 3
               3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
               3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
               3))
128-bit Best solution: #(3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
                         3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 -1 1 3 3 1
                         -1 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
                         3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
                         3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3)
Lowest Energy: -3.4000000000000004
Number of solutions: 2
Best solution: -1 1 1 -1
NIL

You may get back a different number of solutions, but the best---the solution that requires the lowest energy---should be the same.

System Requirements

• Linux x86_64 or Windows XP, Vista, 7 (32/64 bit)
• Python 2.7.x
• D-Wave Python Pack 1.4.0
• PL-Plot 5.10+
• SBCL 1.1.14+
• Quicklisp

Note: with the launch of the new D-Wave Systems website, the Developer Portal and downloads of the Python Pack for registered developers is no longer available.

Dependencies

From Quicklisp:

• burgled-batteries
• gsll (GNU Scientific Library for Lisp)
• cl-plplot