Does Quantum Computing Live up to the Hype?
By Patrick Glauner  |  Nov 08, 2021
Does Quantum Computing Live up to the Hype?
Image courtesy of and under license from Shutterstock.com
Quantum computing is a rapidly-emerging technology that harnesses the laws of quantum mechanics to solve problems far too complex for classical computers. It is predicted to become even faster and work out even more sophisticated scientific equations in future. Prof. Dr Patrick Glauner acknowledges the promise in quantum computing but believes far too many obstacles still remain to overcome before it takes the place of conventional computers.

DEGGENDORF, GERMANY - In recent years, many have heard of quantum computing (QC) and some of its hyped capabilities such as ‘super-fast computers.’ Most, however, do not understand how this technology works and what challenges are involved when implementing large-scale quantum computers. This article will explore some of the core concepts of QC and its potentials and discuss why they will probably remain in niche applications in the foreseeable future.


QC’s Promise

Traditional computers are made of bits, whose states are either 0 or 1. A bit is a switch turned on or off, or whether electricity travels through a circuit or not. This resembles an understanding of our environment and classical physics. In quantum theory, however, a tiny particle, such a photon or electron, can be in multiple locations at the same time. This concept is called ‘superposition’ and confuses most people at first sight. The idea of QC is to take advantage of quantum physics for a new computational paradigm. Quantum computers are made of quantum bits, or qubits in short, that can be in states 0 and 1 in parallel thanks to superposition. By combining multiple qubits, a quantum computer can then be in a superposition of a large number of states. QC thus has the potential to solve certain computational optimization problems substantially faster because of the resulting quantum parallelism.


QC Influence in the US and Europe

The theory of QC began in the 1980s but most of today’s theoretical foundations were published in the 1990s. Early quantum computers of the US-based company D-Wave have been available since 2011. D-Wave uses a simplified QC model called ‘quantum annealing.’ While that model has received criticism for being limited, it is the most practical approach that already works today. The first D-Wave quantum computer outside the US was installed in 2019 a

The content herein is subject to copyright by The Yuan. All rights reserved. The content of the services is owned or licensed to The Yuan. The copying or storing of any content for anything other than personal use is expressly prohibited without prior written permission from The Yuan, or the copyright holder identified in the copyright notice contained in the content.
Continue reading
Buy this article for only US$1.99
- or -
Continue with Linkedin Continue with Google
Comments
Share your thoughts.
The Yuan wants to hear your voice. We welcome your on-topic commentary, critique, and expertise. All comments are moderated for civility.