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HPC-Tools-for-Quantum-Computing


			
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<h1>Getting Started<a class="headerlink" href="#getting-started" title="Permalink to this headline">¶</a></h1>
<p>When using this library, you will most likely be using the <code class="xref py py-class docutils literal notranslate"><span class="pre">State</span></code> class.
This class represents the state of a quantum register.
Using this class you can apply gates to the register, measure, get the state vector and things like that.</p>
<p>To run a simple quantum circuit, you can use something like this,</p>
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="c1"># Import QCGPU</span>
<span class="kn">import</span> <span class="nn">qcgpu</span>

<span class="c1"># Create a new quantum register with 2 qubits</span>
<span class="n">register</span> <span class="o">=</span> <span class="n">qcgpu</span><span class="o">.</span><span class="n">State</span><span class="p">(</span><span class="mi">2</span><span class="p">)</span>

<span class="c1"># Apply a hadamard (H) gate to the first qubit.</span>
<span class="c1"># You should note that the qubits are zero indexed</span>
<span class="n">register</span><span class="o">.</span><span class="n">h</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>

<span class="c1"># Add a controlled not (CNOT/CX) gate, with the control as</span>
<span class="c1"># the first qubit and target as the second.</span>
<span class="c1"># The register will now be in the bell state.</span>
<span class="n">register</span><span class="o">.</span><span class="n">cx</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>

<span class="c1"># Perform a measurement with 1000 samples</span>
<span class="n">results</span> <span class="o">=</span> <span class="n">register</span><span class="o">.</span><span class="n">measure</span><span class="p">(</span><span class="n">samples</span><span class="o">=</span><span class="mi">1000</span><span class="p">)</span>

<span class="c1"># Show the results</span>
<span class="k">print</span><span class="p">(</span><span class="n">results</span><span class="p">)</span>
</pre></div>
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<p>The output of a measurement gives a dictionary of measurement outcomes,
along with how often they occurred.</p>
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="p">{</span><span class="s1">&#39;00&#39;</span><span class="p">:</span> <span class="mi">486</span><span class="p">,</span> <span class="s1">&#39;11&#39;</span><span class="p">:</span> <span class="mi">514</span><span class="p">}</span>
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