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Diffstat (limited to 'qsharp.html.markdown')
| -rw-r--r-- | qsharp.html.markdown | 70 |
1 files changed, 42 insertions, 28 deletions
diff --git a/qsharp.html.markdown b/qsharp.html.markdown index f778aea7..409eac4a 100644 --- a/qsharp.html.markdown +++ b/qsharp.html.markdown @@ -3,6 +3,7 @@ language: Q# contributors: - ["Vincent van Wingerden", "https://github.com/vivanwin"] - ["Mariia Mykhailova", "https://github.com/tcNickolas"] + - ["Andrew Ryan Davis", "https://github.com/AndrewDavis1191"] filename: LearnQSharp.qs --- @@ -13,6 +14,11 @@ This is the new outline ```C# // Single-line comments start with // +/ +Multi-line comments +like so +\ + ///////////////////////////////////// // 1. Quantum data types and operators @@ -22,27 +28,33 @@ This is the new outline using (qs = Qubit[2]) { // The qubits have internal state that you cannot access to read or modify directly. - // You can inspect the current state of your quantum program if you're running it on a classical simulator. + // You can inspect the current state of your quantum program + // if you're running it on a classical simulator. // Note that this will not work on actual quantum hardware! DumpMachine(); - // If you want to change the state of a qubit, you have to do this by applying quantum gates to the qubit. - H(q[0]); // This changes the state of the first qubit from |0⟩ (the initial state of allocated qubits) to (|0⟩ + |1⟩) / sqrt(2). + // If you want to change the state of a qubit + // you have to do this by applying quantum gates to the qubit. + H(q[0]); // This changes the state of the first qubit + // from |0⟩ (the initial state of allocated qubits) to (|0⟩ + |1⟩) / sqrt(2). // q[1] = |1⟩; - this does NOT work, you have to manipulate a qubit by using gates. // You can apply multi-qubit gates to several qubits. CNOT(qs[0], qs[1]); - // You can also apply a controlled version of a gate: a gate that is applied if all control qubits are in |1⟩ state. - // The first argument is an array of control qubits, the second argument is the target qubit. + / You can also apply a controlled version of a gate: + a gate that is applied if all control qubits are in |1⟩ state. + \ The first argument is an array of control qubits, the second argument is the target qubit. Controlled Y([qs[0]], qs[1]); - // If you want to apply an anti-controlled gate (a gate that is applied if all control qubits are in |0⟩ state), you can use a library function. + / If you want to apply an anti-controlled gate + (a gate that is applied if all control qubits are in |0⟩ state), + \ you can use a library function. ApplyControlledOnInt(0, X, [qs[0]], qs[1]); - // To read the information from the quantum system, you use measurements. - // Measurements return a value of Result data type: Zero or One. - // You can print measurement results as a classical value. + / To read the information from the quantum system, you use measurements. + Measurements return a value of Result data type: Zero or One. + \ You can print measurement results as a classical value. Message($"Measured {M(qs[0])}, {M(qs[1])}"); } @@ -57,7 +69,8 @@ let d = 1.0; // This defines a Double variable d equal to 1 // Arithmetic is done as expected, as long as the types are the same let n = 2 * 10; // = 20 -// Q# does not have implicit type cast, so to perform arithmetic on values of different types, you need to cast type explicitly +// Q# does not have implicit type cast, +// so to perform arithmetic on values of different types, you need to cast type explicitly let nd = IntAsDouble(2) * 1.0; // = 20.0 // Boolean type is called Bool @@ -78,9 +91,9 @@ let x = 10 == 15; // is false // Range is a sequence of integers and can be defined like: start..step..stop let xi = 1..2..7; // Gives the sequence 1,3,5,7 -// Assigning new value to a variable: -// by default all Q# variables are immutable; -// if the variable was defined using let, you cannot reassign its value. +/ Assigning new value to a variable: + by default all Q# variables are immutable; +\ if the variable was defined using let, you cannot reassign its value. // When you want to make a variable mutable, you have to declare it as such, // and use the set word to update value @@ -126,9 +139,10 @@ while (index < 10) { set index += 1; } -// Quantum equivalent of a while loop is a repeat-until-success loop. -// Because of the probabilistic nature of quantum computing sometimes -// you want to repeat a certain sequence of operations until a specific condition is achieved; you can use this loop to express this. +/ Quantum equivalent of a while loop is a repeat-until-success loop. + Because of the probabilistic nature of quantum computing sometimes + you want to repeat a certain sequence of operations +\ until a specific condition is achieved; you can use this loop to express this. repeat { // Your operation here } @@ -146,10 +160,10 @@ operation ApplyXGate(source : Qubit) : Unit { X(source); } -// If the operation implements a unitary transformation, you can define -// adjoint and controlled variants of it. -// The easiest way to do that is to add "is Adj + Ctl" after Unit. -// This will tell the compiler to generate the variants automatically. +/ If the operation implements a unitary transformation, you can define + adjoint and controlled variants of it. + The easiest way to do that is to add "is Adj + Ctl" after Unit. +\ This will tell the compiler to generate the variants automatically. operation ApplyXGateCA (source : Qubit) : Unit is Adj + Ctl { X(source); } @@ -169,16 +183,16 @@ operation XGateDemo() : Unit { // We will generate a classical array of random bits using quantum code. @EntryPoint() operation QRNGDemo() : Unit { - mutable bits = new Int[5]; // Array we'll use to store bits - using (q = Qubit()) { // Allocate a qubit - for (i in 0 .. 4) { // Generate each bit independently - H(q); // Apply Hadamard gate to prepare equal superposition - let result = M(q); // Measure the qubit to get Zero or One with 50/50 probability - let bit = result == Zero ? 0 | 1; // Convert measurement result to an integer - set bits w/= i <- bit; // Write generated bit to an array + mutable bits = new Int[5]; / Array we'll use to store bits + using (q = Qubit()) { / Allocate a qubit + for (i in 0 .. 4) { / Generate each bit independently + H(q); / Apply Hadamard gate prepares equal superposition + let result = M(q); / Measure the qubit to get 0 or 1 with 50/50 prob + let bit = result == Zero ? 0 | 1; / Convert measurement result to an integer + set bits w/= i <- bit; / Write generated bit to an array } } - Message($"{bits}"); // Print the result + Message($"{bits}"); / Print the result } ``` |