Q# Pocket Guide (E-book) Kuźnia Raciborska

Ready to build quantum computing applications using Q# and the Microsoft Quantum Development Kit? This is the book for you. Q# is a domain-specific language for expressing quantum algorithms that combines familiar "classical" language constructs with quantum-specific ones. Ideal for any developer familiar with (or willing to learn) the basics of quantum computing and looking to get started with quantum programming, this pocket guide quickly helps you find syntax and usage information for unfamiliar aspects of Q#. You'll explore the quantum software development lifecycle from implementing the program to running it on quantum simulators to testing and debugging it. You'll learn to use the tools provided by Microsoft's Quantum Development Kit for each step of the process.You'll explore:Q# language details, including data types, statements, and operatorsGuidelines for organizing Q# code and invoking it from different environmentsInformation on simulators and tools in the Microsoft Quantum Development KitAdvice on testing and debugging tools and techniques for quantum programs Spis treści: Foreword Preface Why I Wrote This Book Who This Book Is For Navigating This Book Conventions Used in This Book Using Code Examples OReilly Online Learning How to Contact Us Acknowledgments I. Q# Programming Language 1. Program Structure Your First Q# Program Namespaces Operations and Functions Type Declarations Comments Conclusion 2. Data Types The Q# Type System Primitive Classical Data Types Qubits Physics-Imposed Constraints Abstracting Away Physical Implementation The Qubit Data Type Other Primitive Quantum Data Types Measurement Results Pauli Matrices Data Structures Arrays Tuples User-Defined Types Operations and Functions Conclusion 3. Expressions Equality Operators Comparison Operators Logical Operators Bitwise Operators Arithmetic Operators Conditional Expression Range Operator String Expressions Array Expressions User-Defined Type Expressions Call Expressions Lambda Expressions Adjoint and Controlled Functors Conclusion 4. Statements Example: Calculate Eulers Totient Function Working with Variables Variable Scope Mutable and Immutable Variables Declaring Immutable Variables: let Statements Declaring Mutable Variables: mutable Statements Reassigning Mutable Variables: set Statements Assigning Tuples: Tuple Deconstruction Conditional Execution: if Statements Loops Iterate Over a Sequence: for Loops Classical Conditional Loop: while Loops Call an Operation or a Function: Call Statements Stop Execution: return and fail Statements Finish Execution: return Statements Throw an Exception: fail Statements Example: Prepare a Quantum State Allocate Qubits: use and borrow Statements Quantum Conditional Loops: repeat-until Loops Conjugation: within-apply Statements Conclusion 5. Operations and Functions Defining and Using Operations and Functions: The Basics Signatures of Callables Quantum Gates and Measurements Defining and Using Adjoint and Controlled Specializations of Operations Using Operation Specializations Generating Operation Specializations Automatically Defining Operation Specializations Manually Functional Elements of Q# Callable-Typed Variables Using Callables as Arguments Partial Application Lambda Expressions Defining and Using Type-Parameterized Callables Conclusion II. Using the Microsoft Quantum Development Kit 6. Running Q# Programs Quantum Applications Quantum Software Development Quantum Simulators Full State Simulator Resources Estimator Trace Simulator Toffoli Simulator Sparse Simulator Noise Simulator Running Q# Programs Standalone Q# Setting up the project Writing the quantum code Running the program Passing parameters to the quantum code Q# with a Classical Host Q# with .NET Host Setting up the project Calling Q# code from C# Passing parameters to the quantum code Q# with Python Host Setting up the project Calling Q# code from Python Passing parameters to the quantum code Q# Jupyter Notebooks Setting up the notebook Writing the quantum code Running the program Passing parameters to the quantum code Conclusion 7. Microsoft Quantum Development Kit Libraries Getting and Using the Libraries Standard Libraries Microsoft.Quantum.Core: Built-In Functions and Attributes Microsoft.Quantum.Convert: Data Type Conversions Microsoft.Quantum.Logical: Logical and Comparison Functions Microsoft.Quantum.Bitwise: Bitwise Functions Microsoft.Quantum.Math: Classical Math and Arithmetic Microsoft.Quantum.Random: Random Numbers and Probability Distributions Microsoft.Quantum.Arrays: Generic Array Manipulation Microsoft.Quantum.Intrinsic: Basic Quantum Gates and Measurements Microsoft.Quantum.Diagnostics: Testing and Troubleshooting Quantum Programs Microsoft.Quantum.Measurement: Additional Measurement Routines Microsoft.Quantum.Preparation: Quantum State Preparation Microsoft.Quantum.Arithmetic: Quantum Arithmetic Microsoft.Quantum.Canon: Catchall Advanced Libraries Conclusion 8. Testing and Debugging Inspecting Elements of Q# Programs Classical Variables Quantum States Quantum Operations Program Structure and Its Evolution Testing Q# Programs Two Ways to Write a Test Standalone Q# Test Projects Testing Classical Conditions Testing Conditions on the Quantum State Comparing the Unitaries Implemented by Operations Conclusion Index