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Russian Scientists Use Supercomputer To Probe Limits of Google’s Quantum Processor

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4 years ago

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Russian Scientists Use Supercomputer To Probe Limits of Google’s Quantum Processor

CPQM’s quantum information processing laboratory collaborated with the CDISE supercomputing team “Zhores” to simulate Google’s quantum processor. By reproducing noise-free data based on the same statistics as Google’s recent experiments, the team was able to point out the subtle effects lurking in Google’s data. This effect is called an accessibility defect and was discovered by the Skoltech team in past work. The numbers confirm that Google’s data is on the edge of the so-called density-dependent avalanche, which means that future experiments will require more quantum resources to perform quantum approximation optimization. The results were published in the leading journal “Quantum” in the field. From the early days of numerical calculations, quantum systems have become extremely difficult to simulate, although the exact reason is still an active subject of research. Nevertheless, classical computers clearly have inherent difficulties in simulating quantum systems, which prompted several researchers to change their views. Scientists such as Richard Feynman and Yuri Manin speculated in the early 1980s that the unknown components that seemed to make quantum computers difficult to simulate with classical computers could themselves be used as computing resources. For example, quantum processors should be good at simulating quantum systems because they are governed by the same basic principles. This early idea eventually led Google and other tech giants to create prototype versions of the long-awaited quantum processors. These modern devices are prone to errors, they can only execute the simplest quantum programs, and each calculation must be repeated many times to average the error to finally form an approximation. One of the most studied applications of these contemporary quantum processors is the quantum approximation optimization algorithm, or QAOA (pronounced “kyoo-ay-oh-AY”). In a series of dramatic experiments, Google used its processor to probe the performance of QAOA with 23 qubits and three adjustable program steps. In short, QAOA is a method designed to approximate the optimization problem of a hybrid setup composed of a classical computer and a quantum coprocessor. Prototype quantum processors such as Google’s Sycamore are currently limited to performing noisy and limited operations. Using hybrid settings, the hope is to alleviate some of these system limitations and still restore quantum behavior to take advantage of, making methods such as QAOA particularly attractive. Skoltech scientists have recently made a series of discoveries related to QAOA, for example, please refer to the article here. What stands out is the impact that fundamentally limits the applicability of QAOA. They show that the density of the optimization problem—that is, the ratio between its constraints and variables—is the main obstacle to achieving approximate solutions.

News Source : Sci Tech Daily

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Akshay Kumar wishes director Priyadarshan on birthday with Bhooth Bangla BTS pic: ‘Surrounded by ghosts…

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3 months ago

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January 30, 2025

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Akshay Kumar wishes director Priyadarshan on birthday with Bhooth Bangla BTS pic: ‘Surrounded by ghosts…

Akshay Kumar and Priyadarshan, the acclaimed Indian director, celebrated their 68th birthday on Instagram. Kumar, who has worked with Priyadarshan on several cult comedies of the early 2000s, wished him a happy birthday and called him a mentor. The duo is now back together for their upcoming horror-comedy, Bhooth Bangla.

The first poster of the movie has been released, and it is expected to hit theaters in 2025. Akshay Kumar wore a black fedora and a green jacket, layered over a black tee, and fans have expressed their excitement for their new movie.

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The duo’s dynamic and deep bonding have been praised by fans, who have expressed high anticipation for their new movie. The first poster of Bhooth Bangla has already been released, and the movie is expected to hit theaters in 2025.

Akshay Kumar, the versatile Bollywood actor, recently celebrated director Priyadarshan’s birthday by sharing a behind-the-scenes (BTS) photograph from their upcoming film, “Bhooth Bangla.” In the image, Akshay humorously captioned, “Surrounded by ghosts…” The photo features Akshay alongside Priyadarshan and co-actor Paresh Rawal, all dressed in traditional attire, with a black cat perched on Akshay’s shoulder, adding a whimsical touch to the scene.

Reunion After 14 Years

This collaboration marks a significant reunion between Akshay Kumar and Priyadarshan, who last worked together on the film “Bhool Bhulaiyaa” in 2007. Their partnership has been celebrated in the past for delivering successful comedies like “Hera Pheri” and “Garam Masala.” Fans have eagerly anticipated their return to the big screen together, and “Bhooth Bangla” promises to be a delightful addition to their repertoire.

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About ‘Bhooth Bangla’

“Bhooth Bangla” is a horror-comedy that blends elements of suspense with humor, a genre in which both Akshay Kumar and Priyadarshan have excelled. The film is produced by Balaji Telefilms Ltd in association with Cape of Good Films. The motion poster released earlier this year features Akshay Kumar in a suit, with a cat on his shoulder, licking milk slyly, setting the tone for the film’s intriguing and humorous premise.

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Anticipation and Fan Reactions

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The BTS photo shared by Akshay Kumar has generated excitement among fans, who are eager to see the trio back together on screen. The playful caption and the presence of the black cat suggest that “Bhooth Bangla” will offer a mix of thrills and laughs, staying true to the successful formula of their previous collaborations.

As the release date for “Bhooth Bangla be a significant highlight in the upcoming entertainment lineup. The reunion of Akshay Kumar, Priyadarshan, and Paresh Rawal, combined with the intriguing premise and the playful BTS moments, has set high expectations among audiences. Fans can look forward to a cinematic experience that promises both chills and chuckles.

For a visual glimpse into the making of “Bhooth Bangla,” you can watch the following video Akshay Kumar expressed his gratitude as they once again united for their upcoming movie Bhooth Bangla. This marks a new chapter in their long-standing collaboration since the 2000s. He shared a picture from behind the scenes of their new movie, where it seems like they are laughing about something.

Akshay wrote,”Happy Birthday, Priyan Sir! What better way to celebrate than by spending the day on a haunted set, surrounded by ghosts…both real and unpaid extras? Thank you for being a mentor, and the only person who can make chaos look like a masterpiece. May your day be filled with fewer retakes. Wishing you a fantastic year ahead!”

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