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Quantum Computer

01 /Quantum Computers 02 /How to build a qubit 03 /Spin qubits (beginner level) 04 /Operations on spin qubits (beginner level) 05 /Electron spin qubits 06 /Capturing a single electron 07 /Quantum dot qubits 08 /Quantum control and readout 09 /Qubit errors 10 /NV center qubits 11 /Operations on NV center qubits 12 /The Transmon Qubit - A basis for the Quantum Computer 13 /Operations on the Transmon Qubit - Circuit QED 14 /Single-qubit operations on the Transmon qubit 15 /Measurements on the Transmon Qubit 16 /Two-qubit operations on the Transmon qubit 17 /Topological qubits: Anyons 18 /Operations on anyons: Braiding 19 /Operations on anyons: Real-life experiments 20 /Topological quantum computing: Majorana fermions and where to find them 21 /Majorana bound states in superconductors 22 /How do you measure Majorana bound states? 23 /A framework for the future Quantum Computer 24 /The Building Blocks of a Quantum Computer 25 /How to build a Quantum Algorithm - Quantum Circuits 26 /How do you program a quantum algorithm? 27 /The compiler of a quantum computer 28 /Micro-architectures 29 /How do we connect our quantum system to a classical interface? 30 /Assembling a Quantum Processor 31 /Microwave drivers for qubits 32 /Implementation of microwave drivers 33 /Quantum error correction 34 /Surface codes 35 /Fault-tolerant Quantum Error Correction with surface codes

The compiler of a quantum computer

Introduction

Even if we have expressed our quantum algorithms in a so-called high-level quantum programming language, our quantum processor will still not understand this! At this point, we arrive at a new layer of our quantum computer: the compiler. The compiler translates your quantum algorithm to the lower-level language, or machine instructions, that can be executed on particular hardware. 

In this video, assistant-professor Carmina Almudever (QuTech) will explain the role of the compiler. After this, she will describe the steps it executes in detail. These steps are the decomposition of quantum gates, the optimization of the quantum circuit, scheduling the operations, and creating a fault-tolerant version of the circuit. This is where it gets real!

Prerequisite knowledge

Further thinking

We have seen compilers perform multiple jobs such as decomposition of gates, optimization, scheduling, mapping and FT synthesis. What do you think are the physical requirements for it? And what challenges does this bring? (hint: think of the different layers a quantum computing has).

Solution

Further reading

Here you can take a look at the programming language developed at QuTech and browse through it a bit to get a feeling of what this looks like.

These are the most recent publications where Carmina was involved in.