What, Why, How

Answer your questions on what is H-hat, why H-hat, and how to use H-hat.

What is H-hat

H-hat is a rule system, compiler framework, and a statically typed, functional and distributed-system inspired, hybrid quantum-classical programming language family. As an ecosystem, H-hat provides all the infrastructure for dialect builders so dialects comply with the high-level abstraction paradigm and rule system. Users benefit from using a higher-level abstraction language with well-formedness principles and a unified toolchain.

Writing programs with quantum code is as natural as classical code.

Quantum and classical code may coexist in the same program. Quantum paradigm contains quantum types, quantum literals, quantum variables and quantum functions.

Why H-hat

H-hat is intended to be used for designing problem-domain programs. Therefore:

• H-hat abstracts away the physics from the user
• Focus on the problem domain instead of physical constraints

A new layer of abstraction unveils new possibilities to think and write about problems. That is the core of H-hat ecosystem. Just like Fortran revolutionalized as the first compiled programming language, H-hat hopes that having the capability to think of the problem and not the physics will enable a new wave of development and creativity.

How to use H-hat

To use H-hat is necessary to use a programming language that implements H-hat. Luckily H-hat ships with Heather, a reference dialect. You can find it at the Heather dialect page.