Introduction to Qiskit Shadab Hussain

Session Overview What is Quantum Computing Introduction to Qiskit Qiskit Elements IBM Quantum Composer IBM Quantum Lab Single Qubit Gates 01 02 03 04 05 06 Shor's Algorithm 07 https://quantumcomputingindia.com/

What is Quantum Computing? https://quantumcomputingindia.com/

“A quantum machine is a kind of analog calculator that computes by encoding information in the ephemeral waves that comprise light and matter at the nanoscale.” Microsoft researcher David Reilly https://quantumcomputingindia.com/

Use of quantum mechanical phenomena such as superposition and entanglement to perform computation https://quantumcomputingindia.com/

What is superposition? What is entanglement? https://quantumcomputingindia.com/

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Superposition A combination of states we would ordinarily describe independently. Assume a cat and a sealed bottle of poison in a closed box together. The question now is, how would we know if the poison bottle broke open and the cat died or if the cat is still alive inside the box? https://quantumcomputingindia.com/

Entanglement Entanglement is a physical phenomenon that refers to the relation between two or more particles — or, to generalize it, qubits — that affect their properties such that we can not describe the state of one of them independently of the others. One of the most commonly used qubits is photon spins. A photon can either have spin up (one state) or spin down (zero states). If we have two entangled photons, then they must have opposite spins, if one is up then the other must be down. https://quantumcomputingindia.com/

From Bits to Qubits Classical Bit |0> |1> Quantum Bit (QuBit) https://quantumcomputingindia.com/

Qiskit Qiskit [quiss-kit] is an open-source SDK for working with quantum computers at the level of pulses, circuits, and application modules. Qiskit is made up of elements that work together to enable quantum computing. This is a simple meta-package to install the elements of Qiskit altogether. https://qiskit.org/ https://quantumcomputingindia.com/

Qiskit (Terra) SOLID FOUNDATION FOR QUANTUM COMPUTING Qiskit Experiments (Ignis) UNDERSTANDING & MITIGATING NOISE IN QUANTUM SYSTEMS Qiskit Application (Aqua) ALGORITHMS FOR QUANTUM COMPUTING APPLICATIONS Qiskit Simulator (Aer) HIGH-PERFORMANCE SIMULATOR FRAMEWORK FOR QUANTUM CIRCUITS Qiskit Elements The four elements of Qiskit are the essential parts that give Qiskit its power https://quantumcomputingindia.com/

Qiskit Stack https://quantumcomputingindia.com/

Qiskit Terra 4 5 Q I S K I T . P U L S E Q I S K I T . C I R C U I T Q I S K I T . T R A N S P I L E R 1 2 3 Q I S K I T . P R O V I D E R S Q I S K I T . Q U A N T U M _ I N F O Q I S K I T . V I S U A L I Z A T I O N 6 Modules quantum programs at the level of circuits and pulses optimize program for the constraints of a particular device manage execution of batches of experiments on remote-access devices https://quantumcomputingindia.com/

Qiskit AER 4 5 S T A T E V E C T O R S I M U L A T O R Q A S M S I M U L A T O R 1 2 P U L S E S S I M U L A T O R U N I T A R Y S I M U L A T O R Simulators verify current and near-future quantum computers function correctly high performance simulator framework for quantum circuits tools for constructing highly configurable noise models https://quantumcomputingindia.com/

Qiskit Ignis 1 2 F I L T E R S C I R C U I T S F I T T E R S 1 2 3 Q I S K I T . I G N I S . C H A R A C T E R I Z A T I O N Q I S K I T . I G N I S . V E R I F I C A T I O N Q I S K I T . I G N I S . M I T I G A T I O N 3 Building Blocks dedicated to fight noise and errors design quantum error correction codes Experiments https://quantumcomputingindia.com/

Qiskit Aqua used to build applications for quantum computing accessible to domain experts in chemistry, finance, AI https://quantumcomputingindia.com/

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IBM Quantum Composer and Lab https://quantumcomputingindia.com/

Quantum Gates Programing quantum computers is now done on a gate level, similar to classical gates. https://quantumcomputingindia.com/

The Identity gate (has a symbol I) is a single qubit gate that leaves the state of the qubit unchanged. I D E N T I T Y G A T E https://quantumcomputingindia.com/

The NOT gate takes a qubits and flips its state N O T G A T E https://quantumcomputingindia.com/

The Hadamard gate (H) is the magic gate. It is the gate responsible for creating the superposition of states. This gate puts the qubit in 50/50 superposition of states |0⟩ and |1⟩ despite whether the input state was |0⟩ or|1⟩. H A D A M A R D G A T E https://quantumcomputingindia.com/

The C-NOT is a 2-qubit gate that uses one qubit to control the state of the other. C O N T R O L L E D - N O T G A T E https://quantumcomputingindia.com/

Shor's Algorithm Shor’s Algorithm is a quantum algorithm for integer factorisation. Given an odd integer N it will find it’s prime factors. https://quantumcomputingindia.com/

Classical part which reduces the factorisation to a problem of finding the period of the function. This is done classically using a normal computer. Quantum part which uses a quantum computer to find the period using the Quantum Fourier Transform. The algorithm consists of 2 parts: 1. 2. https://quantumcomputingindia.com/

Pick a random number A such that A < N Computer the greatest common divisor (GCD) of and N if the gcd != 1 then we found a factor of N If not then run the quantum circuit that uses a Quantum Fourier Transform If the period is odd then go back to step 1 Otherwise we have found the factors of N For the algorithm the steps are as follows: 1. 2. 3. 4. 5. 6. https://quantumcomputingindia.com/

Contact +91-983-926-1116 shadab.cs0058@gmail.com https://www.linkedin.com/in/shadabhussain96/ https://quantumcomputingindia.com/