GHZ-Quantum-Game.ipynb

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    "# 1. The first step entails the importing of the required modules:\n",
    "\n",
    "from qiskit import *\n",
    "from qiskit.visualization import plot_histogram\n",
    "import numpy as np\n",
    "np.random.seed(42)"
   ]
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    "# 2. The next step involves defining the quantum circuit that is used to implement the three-qubit GHZ game:\n",
    "\n",
    "circ = QuantumCircuit(3,3)\n",
    "circ.h(0)\n",
    "circ.cx(0,1)\n",
    "circ.cx(0,2)\n",
    "circ.h(0)\n",
    "circ.h(1)\n",
    "circ.h(2)\n",
    "circ.measure([0,1,2], [0,1,2])"
   ]
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    "# 3. The next step involves simulating the GHZ game using 'qasm_simulator':\n",
    "\n",
    "backend = Aer.get_backend('qasm_simulator')\n",
    "shots= 1024\n",
    "job = execute(circ, backend=backend, shots = shots)\n",
    "result = job.result()\n",
    "count = result.get_counts(circ)"
   ]
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    "# 4. Eventually, the probability of winning the GHZ game is then calculated and displayed:\n",
    "\n",
    "total = 0\n",
    "if('000' in count):\n",
    "    total += count['000']\n",
    "if('011' in count):\n",
    "    total += count['011']\n",
    "if('101' in count):\n",
    "    total += count['101']\n",
    "if('110' in count):\n",
    "    total += count['110']\n",
    "probability_winning = total/shots\n",
    "print(\"Probability of winning is:\", probability_winning)"
   ]
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