Add simple simulator stub.

plugins/quantum_computing/src/CMakeLists.txt

@@ -5,19 +5,21 @@ list(APPEND HEADERS
     BlochSphere.h
     QuantumState.h
     Qubit.h
-    QuantumGate.h
     QuantumOperator.h
 	QuantumCircuitReader.h
-	QuantumCircuitElement.h
-	QuantumWire.h
-	QuantumTerminal.h
-	BasicQuantumGates.h
+	QuantumSimulator.h
+	circuit_elements/QuantumCircuitElement.h
+	circuit_elements/QuantumWire.h
+	circuit_elements/QuantumGate.h
+	circuit_elements/QuantumTerminal.h
+	circuit_elements/BasicQuantumGates.h
 	visuals/BlochSphereNode.h
 	visuals/QuantumCircuitNode.h
 	visuals/QuantumCircuitElementNode.h
 	visuals/QuantumGateNode.h
 	visuals/QuantumWireNode.h
 	visuals/QuantumTerminalNode.h
+	visuals/QuantumStateNode.h
 )
 
 list(APPEND SOURCES 
@@ -25,19 +27,21 @@ list(APPEND SOURCES
     BlochSphere.cpp
     QuantumState.cpp
     Qubit.cpp
-    QuantumGate.cpp
 	QuantumOperator.cpp
 	QuantumCircuitReader.cpp
-	QuantumCircuitElement.cpp
-	QuantumWire.cpp
-	QuantumTerminal.cpp
-	BasicQuantumGates.cpp
+	QuantumSimulator.cpp
+    circuit_elements/QuantumGate.cpp
+	circuit_elements/QuantumCircuitElement.cpp
+	circuit_elements/QuantumWire.cpp	
+	circuit_elements/QuantumTerminal.cpp
+	circuit_elements/BasicQuantumGates.cpp
 	visuals/BlochSphereNode.cpp
 	visuals/QuantumCircuitNode.cpp
 	visuals/QuantumCircuitElementNode.cpp
 	visuals/QuantumGateNode.cpp
 	visuals/QuantumWireNode.cpp
 	visuals/QuantumTerminalNode.cpp
+	visuals/QuantumStateNode.cpp
 	visuals/BlochSphereNode.cpp
 )
    
@@ -45,6 +49,7 @@ add_library(${PLUGIN_NAME} SHARED ${SOURCES} ${HEADERS})
 
 target_include_directories(${PLUGIN_NAME} PUBLIC 
 							${CMAKE_CURRENT_SOURCE_DIR}
+							${CMAKE_CURRENT_SOURCE_DIR}/circuit_elements
 							${CMAKE_CURRENT_SOURCE_DIR}/visuals
 							)
 target_link_libraries(${PLUGIN_NAME} PUBLIC core visual_elements ntk_math publishing)

plugins/quantum_computing/src/QuantumCircuit.cpp

@@ -48,6 +48,16 @@ const std::vector<QuantumWire*>& QuantumCircuit::getQuantumWires() const
 	return mWires;
 }
 
+QuantumState QuantumCircuit::getInputState() const
+{
+	QuantumState state;
+	for (const auto input : mInputTerminals)
+	{
+		state.addValue(input->getValue());
+	}
+	return state;
+}
+
 void QuantumCircuit::buildWireConnections()
 {
 	for (const auto& wire : mWires)

plugins/quantum_computing/src/QuantumCircuit.h

@@ -4,6 +4,7 @@
 #include "QuantumGate.h"
 #include "QuantumTerminal.h"
 #include "QuantumWire.h"
+#include "QuantumState.h"
 
 #include <vector>
 
@@ -28,6 +29,8 @@ public:
 
 	const std::vector<QuantumWire*>& getQuantumWires() const;
 
+	QuantumState getInputState() const;
+
 private:
 	bool connectivityIsValid() const;
 

plugins/quantum_computing/src/QuantumSimulator.cpp

@@ -0,0 +1,25 @@
+#include "QuantumSimulator.h"
+
+#include "QuantumCircuit.h"
+
+const QuantumState& QuantumSimulator::getInputState() const
+{
+	return mInputState;
+}
+
+const QuantumState& QuantumSimulator::getOutputState() const
+{
+	return mOutputState;
+}
+
+void QuantumSimulator::setCircuit(QuantumCircuit* circuit)
+{
+	mCircuit = circuit;
+}
+
+void QuantumSimulator::run()
+{
+	mInputState = mCircuit->getInputState();
+
+	mOutputState = mInputState;
+}

plugins/quantum_computing/src/QuantumSimulator.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include "QuantumState.h"
+
+class QuantumCircuit;
+
+class QuantumSimulator
+{
+public:
+	const QuantumState& getInputState() const;
+
+	const QuantumState& getOutputState() const;
+
+	void setCircuit(QuantumCircuit* circuit);
+
+	void run();
+
+public:
+	QuantumState mInputState;
+	QuantumState mOutputState;
+
+	QuantumCircuit* mCircuit{ nullptr };
+};

plugins/quantum_computing/src/QuantumState.cpp

@@ -4,3 +4,14 @@ const std::vector<Qubit>& QuantumState::getData() const
 {
 	return mState;
 }
+
+std::string QuantumState::toString() const
+{
+	std::string out;
+	std::size_t count{ 0 };
+	for (const auto& qubit : mState)
+	{
+		out += "|" + qubit.toString() + "\n";
+	}
+	return out;
+}

plugins/quantum_computing/src/QuantumState.h

@@ -3,11 +3,20 @@
 #include "Qubit.h"
 
 #include <vector>
+#include <string>
 
 class QuantumState
 {
+public:
+	void addValue(const Qubit& data)
+	{
+		mState.push_back(data);
+	}
+
 	const std::vector<Qubit>& getData() const;
 
+	std::string toString() const;
+
 private:
 	std::vector<Qubit> mState;
 };

plugins/quantum_computing/src/Qubit.cpp

@@ -1,5 +1,7 @@
 #include "Qubit.h"
 
+#include <sstream>
+
 Qubit::Qubit(const ComplexNumber& alpha, const ComplexNumber& beta)
 	:	mAlpha(alpha),
 		mBeta(beta)
@@ -26,3 +28,11 @@ bool Qubit::isIn1State() const
 {
 	return mBeta.getReal() == 1.0 && mAlpha.getMagnitude() == 0.0;
 }
+
+std::string Qubit::toString(std::size_t precision) const
+{
+	std::stringstream sstr;
+	sstr.precision(precision);
+	sstr << "alpha " << mAlpha.getReal() << " " << mAlpha.getImaginary() << "i , beta " << mBeta.getReal() << " " << mBeta.getImaginary() << "i";
+	return sstr.str();
+}

plugins/quantum_computing/src/Qubit.h

@@ -2,6 +2,8 @@
 
 #include "ComplexNumber.h"
 
+#include <string>
+
 class Qubit
 {
 public:
@@ -14,6 +16,8 @@ public:
 	bool isIn0State() const;
 
 	bool isIn1State() const;
+
+	std::string toString(std::size_t precision=3) const;
 private:
 	ComplexNumber mAlpha;
 	ComplexNumber mBeta;

plugins/quantum_computing/test/CMakeLists.txt

@@ -2,6 +2,7 @@
 list(APPEND UNIT_TEST_FILES
 	TestBlochSphereNode.cpp
 	TestQuantumCircuitParsing.cpp
+	TestQuantumSimulator.cpp
 )
 
 add_executable(quantum_computing_unit_tests ${CMAKE_SOURCE_DIR}/test/test_runner.cpp ${UNIT_TEST_FILES})

plugins/quantum_computing/test/TestQuantumSimulator.cpp

@@ -0,0 +1,27 @@
+#include "TestFramework.h"
+#include "TestUtils.h"
+#include "TestRenderUtils.h"
+
+#include "QuantumCircuitReader.h"
+#include "QuantumCircuitNode.h"
+#include "QuantumCircuit.h"
+
+#include "QuantumState.h"
+#include "QuantumSimulator.h"
+
+#include "File.h"
+
+TEST_CASE(TestQuantumSimulator, "quantum_computing")
+{
+    QuantumCircuitReader reader;
+    auto circuit = reader.read(TestUtils::getTestDataDir() / "quantum_circuit.dat");
+
+    QuantumSimulator simulator;
+    simulator.setCircuit(circuit.get());
+    simulator.run();
+
+    auto input_state = simulator.getInputState();
+
+    File file(TestUtils::getTestOutputDir(__FILE__) / "out.dat");
+    file.writeText(input_state.toString());
+}