ket-lang 0.3.3

Ket Quantum Programming Language interpreter and library.

Ket Quantum Programming Language

Ket is a Python-embedded language for hybridity classical-quantum programming.

Table of contents:

• Code examples
• Usage
• Installation

Code examples

Random Number Generation

# random.ket
def random(n_bits):
  with run():
     q = quant(n_bits)
     H(q)
     return measure(q).value

n_bits = 32
print(n_bits, 'bits random number:', random(n_bits))

$ ket random.ket
32 bits random number: 3830764503

Quantum Teleportation:

# teleport.ket
def teleport(alice : quant) -> quant:
    alice_b, bob_b = quant(2)
    ctrl(H(alice_b), X, bob_b)

    ctrl(alice, X, alice_b)
    H(alice)

    m0 = measure(alice)
    m1 = measure(alice_b)

    if m1 == 1:
        X(bob_b)
    if m0 == 1:
        Z(bob_b)

    return bob_b

alice = quant(1)         # alice = |0⟩
H(alice)                 # alice = |+⟩
Z(alice)                 # alice = |–⟩
bob = teleport(alice)    # bob  <- alice
H(bob)                   # bob   = |1⟩
bob_m = measure(bob)

print('Expected measure 1, result =', bob_m.value)

$ ket teleport.ket
Expected measure 1, result = 1

Usage

$ ket -h
usage: ket [-h] [--version] [-o OUT] [-s SEED] .ket

Ket interpreter

positional arguments:
  .ket                  source code

options:
  -h, --help            show this help message and exit
  --version             show program's version number and exit
  -o OUT, --out OUT     KQASM output file
  -s SEED, --seed SEED  set RNG seed for quantum execution

Installation

Available installation methods:

• pip
• Source

Installing with pip

Installing from PyPI:

$ pip install ket-lang

Installing latest Gitlab CI build:

$ pip install "https://gitlab.com/quantum-ket/ket/-/jobs/artifacts/master/raw/wheelhouse/ket_lang-0.3.2-py3-none-manylinux_2_17_x86_64.manylinux2014_x86_64.whl?job=wheelhouse"

Installing from source

Requirements:

• C++ compiler
• CMake
• Conan

To install from source runs:

$ git clone --recurse-submodules https://gitlab.com/quantum-ket/ket.git
$ mkdir ket/build
$ cd ket/build
$ cmake ../libket -DCMAKE_BUILD_TYPE=Release
$ make -j8
$ python setup.py install

---

This project is part of the Ket Quantum Programming, see the documentation for more information https://quantumket.org.