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Cluster: Quantum computing

Cluster: Quantum computing

Cluster of topics related to quantum computing.

Quantum computation utilizes quantum mechanical effects such as superposition, entanglement, and interference to perform computation. Classical computation relies on the ability to store and manipulate binary integers (bits) generally made from silicon transistors. Instead quantum computers make use of quantum bits (qubits) that can have the value 0, 1 or a superposition of these 2 states. Leveraging superposition and entanglement to create states that scale exponentially with the number of qubits offers the potential for dramatic improvements in computation power compared to classical computers.

A quantum mechanical model of a computer was first conceived by physicist Paul Benioff in 1980, inspired by an Alan Turing paper written in 1936. These ideas were developed by David Deutsch in 1985, describing the concept of a universal quantum computer to understand the mathematical potential that was possible. In 1994 Peter Shor developed “Shor’s algorithm” allowing a quantum computer to perform factorization of large numbers significantly faster than the best classical algorithms.

Development continued through the 90s and 2000s with significant contributions from scientists David Wineland, Christopher Monroe, and Lov Grover, companies and institutions such as the Technical University of Munich, Los Alamos National Laboratory, IBM, D-Wave, and Google. On October 23rd, 2019 researchers at Google published a paper claiming they had achieved quantum supremacy using the Sycamore quantum computer. Quantum supremacy refers to solving a problem that could not be solved by a classical computer in a reasonable amount of time. Although some disagreed whether Google had achieved true quantum supremacy it is seen as a significant breakthrough in quantum computation.

Current quantum computers struggle with errors in the form of noise and loss of quantum coherence as well as engineering challenges. However, they have found applications in fields such as cryptography and drug development.

Fundamental Science
Quantum Mechanics
Quantum Algorithms
Related Topics
Quantum simulation

Quantum computing is bringing forth the opportunity to run virtual simulations instead of physically conducting experiments in a laboratory in areas such as drug discovery, material production and manufacturing, finance and traffic analysis.

Quantum Computing Companies

List of companies that are developing both hardware and software for quantum computation:

Quantum computing hardware
Quantum computing software
Other quantum computing companies
Notable quantum computers




Hartmut Neven

Creator Neven's Law

Further reading


Documentaries, videos and podcasts




Trapped-ion qubits


Francesco Bova
July 16, 2021
Harvard Business Review
A guide to the next computer age.
IEEE Computer Society
June 24, 2021
/PRNewswire/ -- The IEEE International Conference on Quantum Computing and Engineering (QCE21), a multidisciplinary event bridging the gap between the science...
John Horgan
April 20, 2021
Scientific American
Scientific American is the essential guide to the most awe-inspiring advances in science and technology, explaining how they change our understanding of the world and shape our lives.
Marcus Strom
April 13, 2021
A simple yet elegant change to code studied for more than 20 years could shorten timeline to achieve scalable quantum computation and has attracted the attention of quantum computing programs at Amazon Web Services and Yale University.
March 1, 2021
Atos announced that it has been named a Leader in Technology Business Research Inc.'s (TBR) Market Landscape for Quantum Computing. Atos was identified as a Leader for its ability to advance the exploration and development of quantum algorithms, reflecting its commitment to deliver early and concrete benefits of quantum computing by bringing forth new use cases. The report praises Atos' pragmatic and user-centric approach to quantum computing, focused on building quantum accelerators to d...
Brand Post
December 21, 2020
CIO delivers the latest tech news, analysis, how-to, blogs, and video for IT professionals. Covers apps, careers, cloud computing, data center, mobile, outsourcing, security, social media, hardware and software.
November 30, 2020
/PRNewswire/ -- Mphasis (BSE: 526299) (NSE: MPHASIS), an Information Technology (IT) solutions provider specializing in cloud and cognitive services, today...
November 24, 2020
/PRNewswire/ -- Abilities of Classical Computing are Reaching Saturation. A Projected $513.3 Million Opportunity by 2027 Ushers in Quantum Computing as the...


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