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Unlocking Quantum Secrets — Simulations Reveal the Atomic-Scale Story of Qubits

Researchers at the University of Chicago’s Pritzker School of Molecular Engineering, led by Giulia Galli, have conducted a computational study predicting the conditions necessary to create specific spin defects in silicon carbide. These findings, detailed in a paper published in Nature Communications

<em> Nature Communications </em> is a peer-reviewed, open-access, multidisciplinary, scientific journal published by Nature Portfolio. It covers the natural sciences, including physics, biology, chemistry, medicine, and earth sciences. It began publishing in 2010 and has editorial offices in London, Berlin, New York City, and Shanghai.

Wild Experiment Reveals What Would Happen if You Touched a Quantum Superfluid

An experiment has finally revealed how it might feel to touch a quantum superfluid.

Physicists dunked a special, finger-sized probe into an isotope of helium cooled to just a smidge over absolute zero, and recorded the physical properties therein.

It is, they say, the first time we have gleaned an inkling of what the quantum Universe might feel like. And no one had to get horrific frostbite, or ruin an experiment, to find out for real.

China’s ambitious plan to tackle Tesla, Boston Dynamics’ humanoid robots

China has announced a plan to produce its first humanoid robots by 2025, as part of its push to develop the future industry.

China has long been eyeing the top spot in emerging fields like AI and quantum computing. Now, it has a new goal: to create realistic robots that can mimic human actions and emotions.

The Ministry of Industry and Information Technology has unveiled a plan to produce China’s first humanoid robots by 2025. The program also aims to foster more startups in the sector, set industry norms, cultivate talent, and enhance international cooperation.

A review of liquid crystal spatial light modulators devices and applications

Technology to control and harness light has existed for centuries, often as static solutions that must be custom-designed. It is only in the past couple of decades that the digital era of micro-electronics and computing has seen fast rewritable technology meant for displays find its way into the mainstream of optics.

In a new review published in Opto-Electronic Science, the authors showcase the recent advances in replacing the traditional static optical toolkit with a modern digital toolkit for “ on demand.” The result has been the introduction of digitally controlled light to nearly all major optical laboratories worldwide, opening new paths for the creation, control, detection, and harnessing of exotic forms of structured light. The advanced toolkit promises novel applications from classical to quantum, ushering in a new chapter in on-demand structured light.

The authors of this article reviewed recent progress in using a modern digital toolkit for on-demand forms of sculptured light, offering new insights and perspectives on this nascent topic. The core technology that has advanced this field is the liquid crystal spatial light modulator (SLM), allowing high resolution tailoring of light in amplitude, phase, polarization, or even more exotic degrees of freedom such as path, , and even spatiotemporal control. These simple yet highly effective devices are made up of millions of pixels that can be modulated in phase, for spatial control of light in an in-principle lossless manner.

Study observes strong noise correlations between silicon qubits

To build highly performing quantum computers, researchers should be able to reliably derive information about the noise inside them, while also identifying effective strategies to suppress this noise. In recent years, significant progress has been made in this direction, enabling operation errors below 1% in various quantum computing platforms.

A research team at Tokyo Institute of Technology and RIKEN recently set out to reliably quantify the between the produced by pairs of semiconductor-based qubits, which are very appealing for the development of scalable quantum processors. Their paper, published in Nature Physics, unveiled strong interqubit noise correlations between a pair of neighboring silicon spin qubits.

“A useful quantum computer would practically require millions of densely packed, well-controlled qubits with errors not only small but also sufficiently uncorrelated,” Jun Yoneda, one of the researchers who carried out the study, told Phys.org. “We set out to address the potentially serious issue of correlation in silicon qubits, as they have become a compelling platform for large quantum computations otherwise.”