When it comes to studying transportation systems, stock markets and the weather, quantum mechanics is probably the last thing to come to mind.
However, scientists at Australia’s Griffith University and Singapore’s Nanyang Technological University have just performed a ‘proof of principle’ experiment showing that when it comes to simulating such complex processes in the macroscopic world quantum mechanics can provide an unexpected advantage.
Griffith’s Professor Geoff Pryde, who led the project, says that such processes could be simulated using a “quantum hard drive”, much smaller than the memory required for conventional simulations.
“Stephen Hawking once stated that the 21st century is the ‘century of complexity’, as many of today’s most pressing problems, such as understanding climate change or designing transportation system, involve huge networks of interacting components,” he says.
“Their simulation is thus immensely challenging, requiring storage of unprecedented amounts of data. What our experiments demonstrate is a solution may come from quantum theory, by encoding this data into a quantum system, such as the quantum states of light.”
Einstein once said that “God does not play dice with the universe,” voicing his disdain with the idea that quantum particles contain intrinsic randomness.
“But theoretical studies showed that this intrinsic randomness is just the right ingredient needed to reduce the memory cost for modelling partially random statistics,” says Dr Mile Gu, a member of the team who developed the initial theory.
In contrast with the usual binary storage system – the zeroes and ones of bits – quantum bits can be simultaneously 0 and 1, a phenomenon known as quantum superposition.
The researchers, in their paper published in Science Advances, say this freedom allows quantum computers to store many different states of the system being simulated in different superpositions, using less memory overall than in a classical computer.
The team constructed a proof-of-principle quantum simulator using a photon – a single particle of light – interacting with another photon.
The data showed that the quantum system could complete the task with much less information stored than the classical computer– a factor of 20 improvements at the best point.
“Although the system was very small – even the ordinary simulation required only a single bit of memory – it proved that quantum advantages can be achieved,” Pryde says.
“Theoretically, large improvements can also be realised for much more complex simulations, and one of the goals of this research program is to advance the demonstrations to more complex problems.”
Receive an email update when we add a new ARTIFICIAL SYNAPSES article.
The Latest on: Quantum hard drive
via Google News
The Latest on: Quantum hard drive
- A key development in the drive for energy-efficient electronicson March 23, 2020 at 10:43 am
"This is an exciting breakthrough. The application of quantum physics to electronics will result in new and novel devices." In conventional computing, information is coded and stored as a series of ...
- Study unveils gapless ground state in an archetypal quantum kagomeon March 18, 2020 at 6:33 am
Ferromagnetism underpins the functioning of several everyday objects, including compasses, fridge magnets and hard drives. In some cases, neighboring moments and spins ... be a unique tool to defeat ...
- Time crystals enter the real world of condensed matteron March 17, 2020 at 4:16 am
Thus, in order to observe condensed-matter phenomena in the time dimension, we have to ask the child to push (or drive ... in nature or even in the quantum simulation of condensed-matter systems based ...
- Our View: Vote yes to maintain progress in Machesney Parkon March 13, 2020 at 7:09 pm
If you drive along Illinois 173 in Machesney Park you’ll see all kinds of stores and ... Spider Co., which serves aerospace manufacturers, is moving to the former Menards on North Second Street.
- What do we mean when we talk about deep tech?on March 11, 2020 at 9:13 am
Deep tech — the generic term for technologies not focused on end-user services that includes artificial intelligence, robotics, blockchain, advanced material science, photonics and electronics, ...
- An all-electrical magnetic logic gate that harnesses chirality between domainson March 11, 2020 at 9:07 am
Bits of a logic gate can be encoded by differently magnetized regions. A method has been developed in which the walls between these domains are manipulated electrically, rather than magnetically, to ...
- Quantum Celebrates 40 Years of Leading-Edge Data Storage and Management Solutionson March 9, 2020 at 9:01 pm
Quantum acquired the DEC data storage division in 1994, adding tape automation products to its offerings. Quantum sold its hard disk drive business in 2001, and in 2006 acquired Advanced Digital ...
- Practical planning for a quantum futureon March 6, 2020 at 12:55 pm
“If you think about the history of computing, things tend to go really quickly when you hit a tipping point, and it’s not 100% clear when that tipping point will be, but what is clear is that people ...
- Gold Outlook for March 2020 - Quantum Mutual Fundon March 5, 2020 at 7:31 pm
Every other major economy from Japan to Germany to Australia is experiencing a shift towards negative yields as the virus takes a toll on their equity markets and drives investors to ... may hit the ...
via Bing News