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These quantum computers already exist

Published on:

March 18, 2021

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minutes

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#Blogartikel #Blogreihe Quantumcomputing und Digitales Marketing #Innovation #Quantumcomputing #Technologie #Zukunft

It will be several decades before quantum computers are available to everyone. However, prototypes are already running in various research facilities, proving that the theory of quantum computers works in practice.

The first quantum computers with a few qubits were already created in the 1990s. After the turn of the millennium, researchers were able to make increasing progress with the entanglement of more and more qubits:

In 2001, IBM worked with a quantum computer with 7 qubits.
In 2005, the University of Innsbruck succeeded in entangling 8 qubits
In 2011, the Innsbruck researchers were already working with 14 qubits
In 2015, IBM made access to a quantum processor with 5 qubits available online for the first time
In 2017, the size of the processor was increased to 20 qubits
In 2018, Google unveiled a quantum processor with 72 qubits

The different types of quantum computers

Different manufacturers of quantum computers currently often work with different physical and technical approaches. This often makes it difficult to compare the respective models. Anyone wishing to estimate the performance of current quantum computers must always consider not only the number of qubits but also the error rate and the extent to which the individual bits are entangled with each other and can work together.

Manufacturer	Technology	Number of qubits	Limitations	Application possibilities
	"Quantum Annealer"
D-Wave Systems	Solution of optimization problems with the help of quantum fluctuation	5640	Qubits are only entangled with each other field by field	Limited to optimization problems
Google	Universal quantum computer based on superconductors	53	Entanglement not yet completely successful, need temperatures near zero	All types of quantum software
IBM	Universal quantum computer based on superconductors	50	Condition can not be maintained for a long time yet	All types of quantum software
Microsoft	Topological quantum computer with built-in quantum error correction	Still under development	Elaborate and ambitious goal	All kinds of quantum software and complex computations with low error rate
Alibaba	Universal quantum computer based on superconductors	11	Available to the public only through the Chinese website	All types of quantum software
Honeywell	Ion trap quantum computer with moving qubits	10	Qubits are very well connected	All types of quantum software

A uniform classification to classify the performance of the different quantum computers is currently also part of the research in this subject area. All processors still suffer from the fact that they are extremely error-prone and can only work in isolation from any environmental influences. There is therefore still a long way to go before a commercial quantum computer is available to everyone. However, many manufacturers are making the computing power of their prototypes available in the lab via the Internet.

These quantum computers already exist

The different types of quantum computers

See the entire blog series "How Quantum Computers Will Revolutionize Digital Marketing" here.

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