Quantum computing : rapidly-emerging technology
Quantum computing : rapidly-emerging technology

Quantum computing : rapidly-emerging technology - PowerPoint Presentation

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Quantum computing : rapidly-emerging technology - Description

Quantum computers harness the unique behaviour of quantum physicssuch as superposition entanglement and quantum interferenceand apply it to computing This introduces new concepts to traditional programming methods ID: 910755 Download Presentation

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These machines are very different from the classical computers that have been around for more than half a century. Here's a primer on this transformative technology.

Quantum computing




Why do we need quantum computers?

When scientists and engineers encounter difficult problems, they turn to supercomputers. These are very large classical computers, often with thousands of classical CPU and GPU cores. However, even supercomputers struggle to solve certain kinds of problems.

If a supercomputer gets stumped, that's probably because the big classical machine was asked to solve a problem with a high degree of complexity. When classical computers fail, it's often due to complexity



SuperpositionIn superposition, quantum particles are a combination of all possible states. They fluctuate until they are observed and measured. One way to picture the difference between binary position and superposition is to imagine a coin. Classical bits are measured by "flipping the coin" and getting heads or tails. However, if you were able to look at a coin and see both heads and tails at the same time, as well as every state in between, the coin would be in superposition.


Learn quantum computing programming


You can explore the world of quantum computing for free on IBM Cloud, and learn to write quantum code – starting with absolutely zero experience. If you're a developer, jump right in by joining the world's largest quantum developer community and 

start today


IBM's quantum computers are programmed using 


 (link resides outside of ibm.com), a software development kit in Python.


is free, open source, and accompanied with a comprehensive textbook and semester-length course.


Introduction to quantum computingTo fully define quantum computing, we need to define some key terms first.


What is quantum?The quantum in "quantum computing" refers to the quantum mechanics that the system uses to calculate outputs. In physics, a quantum is the smallest possible discrete unit of any physical property. It usually refers to properties of atomic or subatomic particles, such as electrons, neutrinos and photons.


What is a qubit?



is the basic unit of information in quantum computing.


play a similar role in quantum computing as bits play in classical computing, but they behave very differently. Classical bits are binary and can hold only a position of 0 or 1, but


can hold a superposition of all possible states.


What is quantum computing?

Quantum computers harness the unique


of quantum physics—such as superposition, entanglement and quantum interference—and apply it to computing. This introduces new concepts to traditional programming methods.