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Quantum Computing in Practice with Qiskit® and IBM Quantum Experience®

Name: Quantum Computing in Practice with Qiskit® and IBM Quantum Experience®
Author: Hassi Norlen
ISBN: 9781838828448

by Hassi Norlen

November 2020

Beginner to intermediate

408 pages

8h 45m

English

Packt Publishing

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Quantum Computing in Practice with Qiskit® and IBM Quantum Experience®
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Preface
Who this book is forWhat this book coversTo get the most out of this bookDownload the example code filesDownload the color imagesConventions usedSectionsGetting readyHow to do it…How it works…There's more…See alsoGet in touchReviews
Chapter 1: Preparing Your Environment
Technical requirementsCreating your IBM Quantum Experience® accountGetting readyHow to do it...See alsoInstalling Qiskit®Getting readyHow to do it...There's more…See also Downloading the code samplesGetting readyHow to do it...How it works...Installing your API key and accessing your providerGetting readyHow to do it...How it works...There's more…Keeping your Qiskit® environment up to dateGetting readyHow to do it...How it works...
Chapter 2: Quantum Computing and Qubits with Python
Technical requirementsComparing a bit and a qubitGetting readyHow to do it...How it works...See alsoVisualizing a qubit in PythonGetting readyHow to do it...There's more…See alsoA quick introduction to quantum gatesGetting readyHow to do it...How it is works…There's more…See also
Chapter 3: IBM Quantum Experience® – Quantum Drag and Drop
Technical requirementsIntroducing IBM Quantum Experience®ResultsCircuit ComposerQuantum LabBuilding quantum scores with Circuit ComposerHow to do it...There's moreTossing a quantum coin How to do it...There's moreMoving between worldsGetting readyHow to do it...How it works...There's moreSee also
Chapter 4: Starting at the Ground Level with Terra
Technical requirementsListing the required classes, modules, and functionsWorking with quantum registers and classical registersUnderstanding your quantum circuitSelecting a backend to run onRunning your circuit as a jobReceiving the results of your jobQuantum coin toss revisitedGetting readyHow to do it...How it works...Getting some statistics – tossing many coins in a rowGetting readyHow to do it...How it works...There's more...Implementing an upside-down coin tossGetting readyHow to do it...How it works...There's more...Tossing two coins simultaneouslyGetting readyHow to do it...How it works...There's more...Quantum-cheating in a coin toss? Introducing the Bell stateGetting readyHow to do it...How it works...There's more...See alsoMore ways to quantum-cheat – tweaking the oddsGetting readyHow to do it...There's more...Adding more coins – straight and cheatingGetting readyHow to do it...How it works...There's more...Tossing some real coinsGetting readyHow to do itHow it works...There's more...
Chapter 5: Touring the IBM Quantum® Hardware with Qiskit®
Technical requirementsWhat are the IBM Quantum® machines?Getting readyHow to do it...How it works...See alsoLocating the available backendsGetting readyHow to do it...There's more…See alsoComparing backendsGetting readyHow to do it…There's moreFinding the least busy backendGetting readyHow to do it...Visualizing the backendsGetting readyHow to do it...There's more...See alsoExploring a selected backend using Qiskit®Getting readyHow to do it...There's more...
Chapter 6: Understanding the Qiskit® Gate Library
Technical requirementsVisualizing quantum gatesGetting readyHow to do it...How it works...See alsoFlipping with the Pauli X, Y, and Z gatesHow to do it...There's more...Creating superpositions with the H gateHow to do it...There's more...See alsoFixed z rotations with phase shift gates S, , T, and How to do it...There's more...Free rotation around the axes with Rx, Ry, and RzHow to do it...There's more...Building our circuits with the basis gates – U1, U2, U3, and ID The U3 gateThe U2 gate The U1 gate Getting readyHow to do it...There's more...Using gates on 2 qubitsGetting readyHow to do it...How it works...There's more...See alsoUsing gates on more than 2 qubitsHow to do it...There's more...What your quantum circuit really looks likeGetting readyHow to do it…There's more...
Chapter 7: Simulating Quantum Computers with Aer
Technical requirementsUnderstanding the usage of quantum simulatorsGetting readyHow to do it...There's more...See alsoComparing the Qiskit Aer simulator with an IBM quantum computerGetting readyHow to do it...How it works...There's more...See alsoAdding noise profiles of IBM Quantum® backends to local simulatorsGetting readyHow to do it...See alsoUnderstanding your circuits by using the unitary simulatorGetting readyHow to do it…Running diagnostics with the state vector simulatorHow to do it...There's more...
Chapter 8: Cleaning Up Your Quantum Act with Ignis
Technical requirementsExploring your qubits to understand T1, T2, errors, and gates Getting readyHow to do it...How it works...There's moreComparing the qubits on a chipGetting readyHow to do it...There's more...See alsoEstimating the number of gates you have time forGetting readyHow to do it...There's moreSee alsoCorrecting for the expected with readout correctionGetting readyHow to do it…Mitigating the unexpected with quantum error correctionGetting readyHow to do it…How it works…There's moreSee also

Chapter 9: Grover's Search Algorithm
Technical requirementsExploring quantum phase kickbackGetting readyHow to do it...A quick interlude on classical searchGetting readyHow to do it…Building Grover's search algorithmGetting readyHow to do it...There's more…See alsoSearching with a three qubit GroverHow to do it...Adding more qubits to the Grover searchGetting readyHow to do it...There's more…Using the Grover circuit in your own codeGetting readyHow to do it…There's more…
Chapter 10: Getting to Know Algorithms with Aqua
Technical requirementsRunning Grover's algorithm as an Aqua function Getting readyHow to do it...How it works...There's more…Running Shor's algorithm as an Aqua functionGetting readyHow to do it…There's more…See alsoExploring more Aqua algorithmsGetting readyHow to do it…There's moreSee alsoThank you!
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Content preview from Quantum Computing in Practice with Qiskit® and IBM Quantum Experience®

Chapter 9: Grover's Search Algorithm

In this chapter, we will take a look at a fairly well-known quantum algorithm: Grover's search algorithm. We will learn how to code it by building our own circuits for the following variations: a 2-qubit version, a 3-qubit version, and a 4- and more qubit version, to see how the complexity of the circuit grows with the number of qubits.

We will run our algorithm both on a local simulator and on an IBM Quantum® backend and will see how the algorithm works pretty well on the relatively short circuit that is required for a 2-qubit Grover, but not as well on the much larger circuits that are required for more qubits. The number of gates in your circuit gets successively larger, and the various errors that we ...

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Quantum Computing in Practice with Qiskit® and IBM Quantum Experience®

by Hassi Norlen

Chapter 9: Grover's Search Algorithm

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