The quest to build the ultimate computer has taken a big step forward following breakthroughs in ensuring its answers can be trusted.
Known as a quantum computer, such a machine exploits bizarre effects in the sub-atomic world to perform calculations beyond the reach of conventional computers.
First proposed almost 40 years ago, tech giants Microsoft, Google and IBM are among those racing to exploit the power of quantum computing, which is expected to transform fields ranging from weather forecasting and drug design to artificial intelligence.
The power of quantum computers comes from their use of so-called qubits, the quantum equivalent of the 1s and 0s – “bits” – used by conventional number-crunchers.
Unlike bits, qubits exploit a quantum effect allowing them to be both 1s and 0s at the same time. The impact on processing power is astonishing. Instead of processing, say, 100 bits in one go, a quantum computer could crunch 100 qubits, equivalent to 2 to the power 100, or a million trillion trillion bits.
At least, that is the theory. The problem is that the property of qubits that gives them their abilities – known as quantum superposition – is very unstable.
Once created, even the slightest vibration, temperature shift or electromagnetic signal can disturb the qubits, causing errors in calculations. Unless the superposition can be maintained long enough, the quantum computer either does a few calculations well or a vast amount badly.
For years, the biggest achievement of any quantum computer involved using a few qubits to find the prime factors of 15 (which every schoolchild knows are 3 and 5).
Using complex shielding methods, researchers can now stabilise around 50 qubits long enough to perform impressive calculations.
Last October, Google claimed to have built a quantum computer that solved in 200 seconds a maths problem that would have taken an ultra-fast conventional computer more than 10,000 years.
Yet even this billion-fold speed-up is just a shadow of what would be possible if qubits could be kept stable for longer. At present, many of the qubits have their powers wasted being used to spot and fix errors.
Now two teams of researchers have independently found new ways of tackling the error problem.
Physicists at the University of Chicago have found a way of keeping qubits stable for longer not by blocking disturbances, but by blurring them.
It is like sitting on a merry-go-round with people yelling all around you
In some quantum computers, the qubits take the form of electrons whose direction of spin is a superposition of both up and down. By adding a constantly flipping magnetic field, the team found that the electrons rotated so quickly that they barely noticed outside disturbances. The researchers explain the trick with an analogy: “It's like sitting on a merry-go-round with people yelling all around you,” says team member Dr Kevin Miao. “When the ride is still, you can hear them perfectly, but if you're rapidly spinning, the noise blurs into a background.”
Describing their work in the journal Science, the team reported keeping the qubits working for about 1/50th of a second - around 10,000 times longer than their lifetime if left unshielded. According to the team, the technique is simple to use but effective against all the standard sources of disturbance. Meanwhile, researchers at the University of Sydney have come up with an algorithm that allows a quantum computer to work out how its qubits are being affected by disturbances and fix the resulting errors. Reporting their discovery in Nature Physics, the team says their method is ready for use with current quantum computers, and could work with up to 100 qubits.
These breakthroughs come at a key moment for quantum computing. Even without them, the technology is already spreading beyond research laboratories.
In June, the title of world’s most powerful quantum computer was claimed not by a tech giant but by Honeywell – a company perhaps best known for central heating thermostats.
Needless to say, the claim is contested by some, not least because the machine is reported to have only six qubits. But Honeywell points out that it has focused its research on making those qubits ultra-stable – which allows them to work reliably for far longer than rival systems. Numbers of qubits alone, in other words, are not everything.
And the company insists this is just the start. It plans to boost the performance of its quantum computer ten-fold each year for the next five years, making it 100,000 times more powerful still.
But apart from bragging rights, why is a company like Honeywell trying to take on the tech giants in the race for the ultimate computer ?
A key clue can be found in remarks made by Honeywell insiders to Forbes magazine earlier this month. These reveal that the company wants to use quantum computers to discover new kinds of materials.
Doing this involves working out how different molecules interact together to form materials with the right properties. That’s something conventional computers are already used for. But quantum computers won’t just bring extra number-crunching power to bear. Crucially, like molecules themselves, their behaviour reflects the bizarre laws of quantum theory. And this makes them ideal for creating accurate simulations of quantum phenomena – like the creation of new materials.
This often-overlooked feature of quantum computers was, in fact, the original motivation of the brilliant American physicist Richard Feynman, who first proposed their development in 1981.
Honeywell already has plans to use quantum computers to identify better refrigerants. These compounds were once notorious for attacking the Earth’s ozone layer, but replacements still have unwanted environmental effects. Being relatively simple chemicals, the search for better refrigerants is already within the reach of current quantum computers.
But Honeywell sees a time when far more complex molecules such as drugs will also be discovered using the technology.
For the time being, no quantum computer can match the all-round number-crunching power of standard computers. Just as Honeywell made its claim, the Japanese computer maker Fujitsu unveiled a supercomputer capable of over 500 million billion calculations a second.
Even so, the quantum computer is now a reality – and before long it will make even the fastest supercomputer seem like an abacus.
Robert Matthews is Visiting Professor of Science at Aston University, Birmingham, UK
The biog:
Languages: Arabic, Farsi, Hindi, basic Russian
Favourite food: Pizza
Best food on the road: rice
Favourite colour: silver
Favourite bike: Gold Wing, Honda
Favourite biking destination: Canada
Gothia Cup 2025
4,872 matches
1,942 teams
116 pitches
76 nations
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The biog
Favourite Quote: “Real victories are those that protect human life, not those that result from its destruction emerge from its ashes,” by The late king Hussain of Jordan.
Favourite Hobby: Writing and cooking
Favourite Book: The Prophet by Gibran Khalil Gibran
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T20 World Cup Qualifier, Muscat
UAE FIXTURES
Friday February 18: v Ireland
Saturday February 19: v Germany
Monday February 21: v Philippines
Tuesday February 22: semi-finals
Thursday February 24: final
BIGGEST CYBER SECURITY INCIDENTS IN RECENT TIMES
SolarWinds supply chain attack: Came to light in December 2020 but had taken root for several months, compromising major tech companies, governments and its entities
Microsoft Exchange server exploitation: March 2021; attackers used a vulnerability to steal emails
Kaseya attack: July 2021; ransomware hit perpetrated REvil, resulting in severe downtime for more than 1,000 companies
Log4j breach: December 2021; attackers exploited the Java-written code to inflitrate businesses and governments
Engine: 5.6-litre V8
Transmission: seven-speed automatic
Power: 400hp
Torque: 560Nm
Price: Dh234,000 - Dh329,000
On sale: now
Game Of Thrones Season Seven: A Bluffers Guide
Want to sound on message about the biggest show on television without actually watching it? Best not to get locked into the labyrinthine tales of revenge and royalty: as Isaac Hempstead Wright put it, all you really need to know from now on is that there’s going to be a huge fight between humans and the armies of undead White Walkers.
The season ended with a dragon captured by the Night King blowing apart the huge wall of ice that separates the human world from its less appealing counterpart. Not that some of the humans in Westeros have been particularly appealing, either.
Anyway, the White Walkers are now free to cause any kind of havoc they wish, and as Liam Cunningham told us: “Westeros may be zombie land after the Night King has finished.” If the various human factions don’t put aside their differences in season 8, we could be looking at The Walking Dead: The Medieval Years.
THREE
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Quick facts on cancer
- Cancer is the second-leading cause of death worldwide, after cardiovascular diseases
- About one in five men and one in six women will develop cancer in their lifetime
- By 2040, global cancer cases are on track to reach 30 million
- 70 per cent of cancer deaths occur in low and middle-income countries
- This rate is expected to increase to 75 per cent by 2030
- At least one third of common cancers are preventable
- Genetic mutations play a role in 5 per cent to 10 per cent of cancers
- Up to 3.7 million lives could be saved annually by implementing the right health
strategies
- The total annual economic cost of cancer is $1.16 trillion
Key facilities
- Olympic-size swimming pool with a split bulkhead for multi-use configurations, including water polo and 50m/25m training lanes
- Premier League-standard football pitch
- 400m Olympic running track
- NBA-spec basketball court with auditorium
- 600-seat auditorium
- Spaces for historical and cultural exploration
- An elevated football field that doubles as a helipad
- Specialist robotics and science laboratories
- AR and VR-enabled learning centres
- Disruption Lab and Research Centre for developing entrepreneurial skills
Labour dispute
The insured employee may still file an ILOE claim even if a labour dispute is ongoing post termination, but the insurer may suspend or reject payment, until the courts resolve the dispute, especially if the reason for termination is contested. The outcome of the labour court proceedings can directly affect eligibility.
- Abdullah Ishnaneh, Partner, BSA Law
RESULT
Arsenal 2
Sokratis Papastathopoulos 45 4'
Eddie Ntkeiah 51'
Portsmouth 0
UAE currency: the story behind the money in your pockets
The Brutalist
Director: Brady Corbet
Stars: Adrien Brody, Felicity Jones, Guy Pearce, Joe Alwyn
Rating: 3.5/5
ELIO
Starring: Yonas Kibreab, Zoe Saldana, Brad Garrett
Directors: Madeline Sharafian, Domee Shi, Adrian Molina
Rating: 4/5
Ferrari 12Cilindri specs
Engine: naturally aspirated 6.5-liter V12
Power: 819hp
Torque: 678Nm at 7,250rpm
Price: From Dh1,700,000
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The specs: 2019 Mini Cooper
Price, base: Dh141,740 (three-door) / Dh165,900 (five-door)
Engine: 1.5-litre four-cylinder (Cooper) / 2.0-litre four-cylinder (Cooper S)
Power: 136hp @ 4,500rpm (Cooper) / 192hp @ 5,000rpm (Cooper S)
Torque: 220Nm @ 1,480rpm (Cooper) / 280Nm @ 1,350rpm (Cooper S)
Transmission: Seven-speed automatic
Fuel consumption, combined: 4.8L to 5.4L / 100km
Living in...
This article is part of a guide on where to live in the UAE. Our reporters will profile some of the country’s most desirable districts, provide an estimate of rental prices and introduce you to some of the residents who call each area home.
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Jewel of the Expo 2020
252 projectors installed on Al Wasl dome
13.6km of steel used in the structure that makes it equal in length to 16 Burj Khalifas
550 tonnes of moulded steel were raised last year to cap the dome
724,000 cubic metres is the space it encloses
Stands taller than the leaning tower of Pisa
Steel trellis dome is one of the largest single structures on site
The size of 16 tennis courts and weighs as much as 500 elephants
Al Wasl means connection in Arabic
World’s largest 360-degree projection surface
Common OCD symptoms and how they manifest
Checking: the obsession or thoughts focus on some harm coming from things not being as they should, which usually centre around the theme of safety. For example, the obsession is “the building will burn down”, therefore the compulsion is checking that the oven is switched off.
Contamination: the obsession is focused on the presence of germs, dirt or harmful bacteria and how this will impact the person and/or their loved ones. For example, the obsession is “the floor is dirty; me and my family will get sick and die”, the compulsion is repetitive cleaning.
Orderliness: the obsession is a fear of sitting with uncomfortable feelings, or to prevent harm coming to oneself or others. Objectively there appears to be no logical link between the obsession and compulsion. For example,” I won’t feel right if the jars aren’t lined up” or “harm will come to my family if I don’t line up all the jars”, so the compulsion is therefore lining up the jars.
Intrusive thoughts: the intrusive thought is usually highly distressing and repetitive. Common examples may include thoughts of perpetrating violence towards others, harming others, or questions over one’s character or deeds, usually in conflict with the person’s true values. An example would be: “I think I might hurt my family”, which in turn leads to the compulsion of avoiding social gatherings.
Hoarding: the intrusive thought is the overvaluing of objects or possessions, while the compulsion is stashing or hoarding these items and refusing to let them go. For example, “this newspaper may come in useful one day”, therefore, the compulsion is hoarding newspapers instead of discarding them the next day.
Source: Dr Robert Chandler, clinical psychologist at Lighthouse Arabia
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MEFCC information
Tickets range from Dh110 for an advance single-day pass to Dh300 for a weekend pass at the door. VIP tickets have sold out. Visit www.mefcc.com to purchase tickets in advance.
UAE tour of the Netherlands
UAE squad: Rohan Mustafa (captain), Shaiman Anwar, Ghulam Shabber, Mohammed Qasim, Rameez Shahzad, Mohammed Usman, Adnan Mufti, Chirag Suri, Ahmed Raza, Imran Haider, Mohammed Naveed, Amjad Javed, Zahoor Khan, Qadeer Ahmed
Fixtures: Monday, first 50-over match; Wednesday, second 50-over match; Thursday, third 50-over match
UAE%20v%20West%20Indies
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RESULT
Huddersfield Town 2 Manchester United 1
Huddersfield: Mooy (28'), Depoitre (33')
Manchester United: Rashford (78')
Man of the Match: Aaron Mooy (Huddersfield Town)
Global state-owned investor ranking by size
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UAE
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Canada
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COMPANY PROFILE
● Company: Bidzi
● Started: 2024
● Founders: Akshay Dosaj and Asif Rashid
● Based: Dubai, UAE
● Industry: M&A
● Funding size: Bootstrapped
● No of employees: Nine
ETFs explained
Exhchange traded funds are bought and sold like shares, but operate as index-tracking funds, passively following their chosen indices, such as the S&P 500, FTSE 100 and the FTSE All World, plus a vast range of smaller exchanges and commodities, such as gold, silver, copper sugar, coffee and oil.
ETFs have zero upfront fees and annual charges as low as 0.07 per cent a year, which means you get to keep more of your returns, as actively managed funds can charge as much as 1.5 per cent a year.
There are thousands to choose from, with the five biggest providers BlackRock’s iShares range, Vanguard, State Street Global Advisors SPDR ETFs, Deutsche Bank AWM X-trackers and Invesco PowerShares.
Book%20Details
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More from Rashmee Roshan Lall
The Good Liar
Starring: Helen Mirren, Ian McKellen
Directed by: Bill Condon
Three out of five stars
Teams in the EHL
White Bears, Al Ain Theebs, Dubai Mighty Camels, Abu Dhabi Storms, Abu Dhabi Scorpions and Vipers
AUSTRALIA SQUAD
Steve Smith (capt), David Warner, Cameron Bancroft, Jackson Bird, Pat Cummins, Peter Handscomb, Josh Hazlewood, Usman Khawaja, Nathan Lyon, Shaun Marsh, Tim Paine, Chadd Sayers, Mitchell Starc.
RESULT
Liverpool 4 Southampton 0
Jota (2', 32')
Thiago (37')
Van Dijk (52')
Man of the match: Diogo Jota (Liverpool)
