Just in:
The World’s First & Wettest Party: “S2O Hong Kong Songkran Music Festival” proudly returns Get an immersive water and music experience on 8-9 June during Dragon Boat Festival long weekend at Central Harbourfront Event Space! // Court Sides with Coinbase on Wallet Service, But Staking Program Remains in Limbo // Arvind Kejriwal Gets International Heft Against The Deshi Vishwaguru // Universal Language for Healthcare: General Authority Embraces Global Coding System // Experts come together to support updating the city’s nature conservation masterplan // Renewables Surge Sets Record, But Global Equity Lags // Near Miss at Kolkata Airport: IndiGo Plane Makes Contact with Stationary Air India Express // Arvind Kejriwal Was Used By BJP In 2011 Movement To Take On The Congress // Lisboeta Macau’s world first LINE FRIENDS PRESENTS CASA DE AMIGO and BROWN & FRIENDS CAFE & BISTRO has officially opened // Party Nominees Refusing To Contest: Major Perception Threat For BJP // HSBC Streamlines Gold Investment for Hong Kong Residents with Tokenized Product // Sunshine’s Debut Features Leave Tech World Scratching Its Head // Experience Ultimate Shopping Freedom at 4.4 Shopee Spree: Don’t Worry, Shop Shopee! // AI Boost for Galaxy Devices: Samsung Expands One UI 6.1 Update // Samsung Partners National Heritage Board to Bring a Slice of Singapore’s Cultural Heritage to Samsung The Frame TV // Andertoons by Mark Anderson for Thu, 28 Mar 2024 // US reiterates concern over Kejriwal arrest, Cong accounts // In Lok Sabha Polls In Punjab, AAP Is Advantageously Placed As Against Its Three Rivals // Ajman Celebrates Conclusion of Ramadan Activities with Grand Ceremony // Konica Minolta is named ASEAN 2023 Market Leader in Colour Light and Mid Digital Production Printers //
HomeScienceQuantum computing researchers reduce quantum information processing errors

Quantum computing researchers reduce quantum information processing errors

Quantum computing remains mysterious and elusive to many, but USC Viterbi School of Engineering researchers might have taken us one step closer to bring such super-powered devices to practical reality. The USC Viterbi School of Engineering and Information Sciences Institute is home to the USC-Lockheed Martin Quantum Computing Center (QCC), a super-cooled, magnetically shielded facility specially built to house the first commercially available quantum optimization processors — devices so advanced that there are currently only two in use outside the Canadian company D-Wave Systems Inc., where they were built: The first one went to USC and Lockheed Martin, and the second to NASA and Google.

Quantum computers encode data in quantum bits, or “qubits,” which have the capability of representing the two digits of one and zero at the same time — as opposed to traditional bits, which can encode distinctly either a one or a zero. This property, called superposition, along with the ability of quantum states to “interfere” (cancel or reinforce each other like waves in a pond) and “tunnel” through energy barriers, is what may one day allow quantum processors to ultimately perform optimization calculations much faster than is possible using traditional processors. Optimization problems can take many forms, and quantum processors have been theorized to be useful for a variety of machine learning and big data problems like stock portfolio optimization, image recognition and classification, and detecting anomalies.

Yet, exactly because of the exotic way in which quantum computers process information, they are highly sensitive to errors of different kinds. When such errors occur they can erase any quantum computational advantage. Therefore developing methods to overcome errors is of paramount importance in the quest to demonstrate “quantum supremacy.” In a new article, USC researchers Walter Vinci, Tameem Albash, and Daniel Lidar, put forth a scheme to minimize errors. Their solution, explained in the article “Nested Quantum Annealing Correction” published in the journal Nature Quantum Information, is focused on reducing and correcting errors associated with heating, a type of errors that is common and particularly detrimental in quantum optimizers. Simply cooling the quantum processor further is not possible since the specialized dilution refrigerator that keeps it cool already operates at its limit, at a temperature approximately 1000 times colder than outer space. Vinci, Albash and Lidar have developed a new method to suppress heating errors, which they call “nested quantum annealing correction.”

ADVERTISEMENT

By coupling several qubits together on a D-Wave Two TM quantum optimizer, without changing the hardware of the device, these qubits act effectively as one qubit that experiences a lower temperature. The more qubits are coupled, the lower is the temperature experienced, and in this manner the researchers can minimize the effect of heating as a source of noise or error. Furthermore, this nesting scheme is implementable not only on platforms such as the D-Wave processor on which it was tested, but also on other future quantum optimization devices with different hardware architectures. The researchers believe that this work is an important step in eliminating a bottleneck for scalable quantum optimization implementations. “Our work is part of a large scale effort by the research community aimed at realizing the potential of quantum information processing, which we all hope might one day surpass its classical counterparts,” QCC Scientific Director, and USC Viterbi Professor, Daniel Lidar said.

Story Source:

The above post is reprinted from materials provided by University of Southern California. Note: Materials may be edited for content and length.

Let’s block ads! (Why?)

(via Telegraph)

ADVERTISEMENT

ADVERTISEMENT
Just in:
Court Sides with Coinbase on Wallet Service, But Staking Program Remains in Limbo // AI Boost for Galaxy Devices: Samsung Expands One UI 6.1 Update // Meta Earth Official Website Launch: The Pioneer Explorer in the Modular Public Blockchain Domain // Near Miss at Kolkata Airport: IndiGo Plane Makes Contact with Stationary Air India Express // Renewables Surge Sets Record, But Global Equity Lags // Universal Language for Healthcare: General Authority Embraces Global Coding System // Arvind Kejriwal Was Used By BJP In 2011 Movement To Take On The Congress // Experience Ultimate Shopping Freedom at 4.4 Shopee Spree: Don’t Worry, Shop Shopee! // Andertoons by Mark Anderson for Thu, 28 Mar 2024 // Sharpening the Focus: Sharjah Health Department Refines Evaluation Criteria for “Healthy Schools Programme” // No running of govt from jail, says Delhi Lt Governor // US reiterates concern over Kejriwal arrest, Cong accounts // Superland Announced Annual Results for 2023, 2023 Net Profit Increased approximately 39.5% to approximately HK$22.2 million as Compared to the 2022 Adjusted One // Experts come together to support updating the city’s nature conservation masterplan // Sunshine’s Debut Features Leave Tech World Scratching Its Head // Arvind Kejriwal Gets International Heft Against The Deshi Vishwaguru // Lisboeta Macau’s world first LINE FRIENDS PRESENTS CASA DE AMIGO and BROWN & FRIENDS CAFE & BISTRO has officially opened // Hullabaloo About Electoral Bonds May End Up As A Whimper Pre And Post Poll // Konica Minolta is named ASEAN 2023 Market Leader in Colour Light and Mid Digital Production Printers // The World’s First & Wettest Party: “S2O Hong Kong Songkran Music Festival” proudly returns Get an immersive water and music experience on 8-9 June during Dragon Boat Festival long weekend at Central Harbourfront Event Space! //