The strange world of quantum computing

If we can harness the potential of quantum physics, modern computers may come to seem like plodding calculators in comparison with the machines of the future, says Chris Carter

Quantum computing concept
(Image credit: Getty Images)

You might think that creating a highly accurate model of the way air passes through a jet engine would be relatively easy. It is incredibly hard. The enormous number of variables means that it is, in fact, beyond the abilities of our most powerful computers. But maybe not for long. Aircraft engine manufacturer Rolls-Royce has partnered with specialist companies to produce quantum computers to crack the puzzle.

What is a “quantum” computer? You and I live in the “classical” world. The things we see and the ways in which we interact with them are defined by the laws of “classical physics” as laid out by Albert Einstein in his General Theory of Relativity. So far, so straightforward. Einstein’s theory works so well, it has been likened to a work of art. Lev Landau, a Russian physicist, called it “the most beautiful of theories”. There is just one snag. On the level of very small things – things we cannot see but we know are there, such as atoms – the General Theory of Relativity breaks down. That is to say, the laws of physics of the classical world stop working.

Subscribe to MoneyWeek

Subscribe to MoneyWeek today and get your first six magazine issues absolutely FREE

Get 6 issues free
https://cdn.mos.cms.futurecdn.net/flexiimages/mw70aro6gl1676370748.jpg

Sign up to Money Morning

Don't miss the latest investment and personal finances news, market analysis, plus money-saving tips with our free twice-daily newsletter

Don't miss the latest investment and personal finances news, market analysis, plus money-saving tips with our free twice-daily newsletter

Sign up
Chris Carter
Wealth Editor, MoneyWeek

Chris Carter spent three glorious years reading English literature on the beautiful Welsh coast at Aberystwyth University. Graduating in 2005, he left for the University of York to specialise in Renaissance literature for his MA, before returning to his native Twickenham, in southwest London. He joined a Richmond-based recruitment company, where he worked with several clients, including the Queen’s bank, Coutts, as well as the super luxury, Dorchester-owned Coworth Park country house hotel, near Ascot in Berkshire.

Then, in 2011, Chris joined MoneyWeek. Initially working as part of the website production team, Chris soon rose to the lofty heights of wealth editor, overseeing MoneyWeek’s Spending It lifestyle section. Chris travels the globe in pursuit of his work, soaking up the local culture and sampling the very finest in cuisine, hotels and resorts for the magazine’s discerning readership. He also enjoys writing his fortnightly page on collectables, delving into the fascinating world of auctions and art, classic cars, coins, watches, wine and whisky investing.

You can follow Chris on Instagram.