PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

Encoding computers of the future

Researchers develop a computer from an array of VCSELs with optical feedback

Encoding computers of the future
2024-02-23
(Press-News.org) In our data-driven era, solving complex problems efficiently is crucial. However, traditional computers often struggle with this task when dealing with a large number of interacting variables, leading to inefficiencies such as the von Neumann bottleneck. A new type of collective state computing has emerged to address this issue by mapping these optimization problems onto something called the Ising problem in magnetism.

Here's how it works: Imagine representing a problem as a graph, where nodes are connected by edges. Each node has two states, either +1 or -1, representing the potential solutions. The goal is to find the configuration that minimizes the system's total energy, based on a concept called a Hamiltonian.

To solve the Ising Hamiltonian efficiently, researchers are exploring physical systems that could outperform traditional computers. One promising approach involves using light-based techniques, where information is encoded into properties like polarization state, phase, or amplitude. By leveraging effects like interference and optical feedback, these systems can quickly find the correct solution.

In a study published in the Journal of Optical Microsystems, researchers from the National University of Singapore and the Agency for Science, Technology, and Research looked at using a system of vertical cavity surface-emitting lasers (VCSELs) to solve Ising problems. In this setup, information is encoded in the linear polarization states of the VCSELs, with each state corresponding to a potential solution. The lasers are connected to each other, and the interactions between them encode the problem's structure.

The researchers tested their system on modest 2-, 3-, and 4-bit Ising problems and found promising results. However, they also identified challenges, such as the need for minimal VCSEL lasing anisotropy, which may be difficult to achieve in practice. Nonetheless, overcoming these challenges could lead to an all-optical VCSEL-based computer architecture capable of solving problems that are currently out of reach for traditional computers.

Read the Gold Open Access paper by Loke et al., “Linear polarization state encoding for Ising computing with optically injection-locked VCSELs," Journal of Optical Microsystems 4(1), 014501 (2023) DOI 10.1117/1.JOM.4.1.014501.

END

[Attachments] See images for this press release:
Encoding computers of the future Encoding computers of the future 2

ELSE PRESS RELEASES FROM THIS DATE:

Artifact could be linked to Spanish explorer Coronado's expedition across Texas Panhandle

Artifact could be linked to Spanish explorer Coronados expedition across Texas Panhandle
2024-02-23
DALLAS (SMU) – It’s a small piece of obsidian, just over 5 centimeters long, likely found on a hard-scrabble piece of ranchland in the Texas panhandle. But when SMU anthropologist Matthew Boulanger looks at it, he gets a mental image of Spanish explorer Francisco Vasquez de Coronado making his way across the plains more than 470 years ago in search of a fabled city of gold. Boulanger believes that the flaked-stone tool with its sharp edge was likely dropped by a member of Coronado’s ...

Do’s and don'ts with direct oral anticoagulants

2024-02-23
Direct oral anticoagulants (DOACs) are a common treatment for patients with a wide variety of cardiovascular conditions. DOACs are the preferred treatment over vitamin K antagonists (VKAs) for many patients with atrial fibrillation or venous thromboembolism, since the latter would have a higher risk of intracranial bleeding and more complex dosing routine. However, new research suggests that DOACs should not be the first line of treatment for every patient who need to treat or prevent blood clots. A systematic overview from researchers at Brigham and Women’s Hospital, a founding member of Mass General Brigham, discusses the efficacy ...

Super strong magnetic fields leave imprint on nuclear matter

Super strong magnetic fields leave imprint on nuclear matter
2024-02-23
UPTON, NY—A new analysis by the STAR collaboration at the Relativistic Heavy Ion Collider (RHIC), a particle collider at the U.S. Department of Energy’s (DOE) Brookhaven National Laboratory, provides the first direct evidence of the imprint left by what may be the universe’s most powerful magnetic fields on “deconfined” nuclear matter. The evidence comes from measuring the way differently charged particles separate when emerging from collisions of atomic nuclei at this DOE Office of Science user ...

TMEM208 variants cause a new developmental disorder

2024-02-23
A recent study conducted in the lab of Dr. Hugo J. Bellen, distinguished service professor at Baylor College of Medicine and principal investigator at the Jan and Dan Duncan Neurological Research Institute at Texas Children’s Hospital, has discovered a biological role of a specific transmembrane protein called TMEM208.  The study, published in the Proceedings of the National Academy of Sciences, showed that a majority of fruit flies lacking this gene do not survive, and the few that do survive have many developmental defects. Similarly, a child with variants ...

Researchers explore whether gut microbes cause some COVID-19 patients to have higher blood clot risk

2024-02-23
A gut microbial metabolite called 2-methylbutyrylcarnitine (2MBC) plays a role in exacerbating thrombosis -- the formation of blood clots – researchers report February 23rd in the journal Cell Metabolism. The results also revealed that 2MBC is accumulated in individuals with COVID-19, potentially explaining why these patients are at increased risk of thrombosis. “Our study provides mechanistic insight by implicating 2MBC as a metabolite that links gut microbiota dysbiosis to elevated thrombotic ...

Childhood factors associated with unnatural death through midadulthood

2024-02-23
About The Study: In this urban population-based cohort study of 2,180 participants, no modifiable risk factors of mortality at the level of the individual (e.g., depression or anxiety and substance use) or the family (e.g., household education level) were identified. However, the degree of neighborhood poverty in early childhood was significantly associated with death by unnatural causes (death due to unintentional injury, suicide, and homicide) in early adulthood, suggesting that economic policies are needed to advance health equity in relation to premature mortality.  Authors: Holly C. Wilcox, Ph.D., of the Johns Hopkins Bloomberg ...

Severe COVID-19 in vaccinated adults with hematologic cancers in the Veterans Health Administration

2024-02-23
About The Study: In this case-control study including 6,122 patients with hematologic cancers and SARS-CoV-2 infection, odds of severe COVID-19 remained high through mid-2022 despite vaccination, especially in patients requiring treatment.  Authors: Paul A. Monach, M.D., Ph.D., of the VA Boston Cooperative Studies Program in Boston, is the corresponding author.  To access the embargoed study: Visit our For The Media website at this link https://media.jamanetwork.com/  (doi:10.1001/jamanetworkopen.2024.0288) Editor’s Note: Please see the article for additional information, including other authors, author contributions ...

Recreational marijuana legalization and workplace injuries among younger workers

2024-02-23
About The Study: In this study, recreational marijuana laws that allow recreational marijuana sales were associated with a 10% increase in workplace injuries among individuals ages 20 to 34. The findings are consistent with the hypothesis that recreational marijuana impedes cognitive function and care among younger workers.  Authors: Joseph J. Sabia, Ph.D., of San Diego State University, is the corresponding author. To access the embargoed study: Visit our For The Media website at this ...

New study identifies 13 strategies for advancing racial and ethnic equity in the academic health sciences

2024-02-23
BOSTON - Amid continued debate over how to advance diversity and equity in higher education following the Supreme Court’s decision striking down affirmative action, researchers from Massachusetts General Hospital and Northeastern University today issued a “roadmap” of strategies to help academic health institutions maintain their commitments to racial and ethnic diversity among their students, staff, and faculty in academic health sciences. Their recommendations, published in JAMA Health Forum, outline 13 evidence-based strategies for increasing racial and ethnic equity in graduate-level health programs. “This ...

School focus on grades, test scores linked to violence against teachers

2024-02-23
COLUMBUS, Ohio – Violence against teachers is likely to be higher in schools that focus on grades and test scores than in schools that emphasize student learning, a new study has found. Researchers surveyed over 9,000 U.S. teachers shortly before and during the height of the COVID-19 pandemic about their perception of the instructional emphasis in their schools. Participants also reported whether they had been subjected to physical, verbal or property violence – by students, parents, colleagues and/or administrators. Results ...

LAST 30 PRESS RELEASES:

New Inflammatory Bowel Disease testing protocol could speed up diagnosis

Most massive stellar black hole in our galaxy found

New review offers first recommendations on accurately assessing the carbon footprint of coffee farming

Seed ferns: Plants experimented with complex leaf vein networks 201 million years ago

New statewide research reveals the staggering economic cost of intimate partner violence in Louisiana

From ashes to adversity: Lessons from South Australia's business recovery amidst bushfires and pandemic

Multiple pollutants from crop and livestock production in the Yangtze River: status and challenges

Unraveling the unique role of DELLA proteins in grapevine flowering: A shift in developmental fate

Next-generation treatments hitch a ride into cancer cells

Unraveling the role of DlBGAL9 and AGL61/80 in Longan somatic embryogenesis and heat stress tolerance: A multi-omics approach

Decoding pecan pollination: A dive into the chloroplast genome of 'Xinxuan-4' and its impact on cultivar diversity and efficiency

KD-crowd: A knowledge distillation framework for learning from crowds

Can animals count?

Australian media need generative AI policies to help navigate misinformation and disinformation

Illuminating the path to hearing recovery

Unlocking the secrets of fruit quality: How anthocyanins and acidity shape consumer preferences and market value

Evidence for reversible oxygen ion movement during electrical pulsing: enabler of the emerging ferroelectricity in binary oxides

Revolutionizing Citrus cultivation: The superior tolerance and growth vigor of 'Shuzhen No.1' rootstock

Family and media pressure to lose weight in adolescence linked to how people value themselves almost two decades later

Despite the desire to reduce the risk of imitation, new research suggests startups should scale slowly and steadily

The Lancet: Many people with breast cancer ‘systematically left behind’ due to inaction on inequities and hidden suffering

From opioid overdose to treatment initiation: outcomes associated with peer support in emergency departments

NIH awards $3.4 million to Wayne State University to investigate biomarkers for better reproductive success

New study shows corporate misconduct at home hurts sales overseas

Take it from the rats: A junk food diet can cause long-term damage to adolescent brains

Fralin Biomedical Research Institute team unpacking genetic mysteries of childhood epilepsies

UNC-Chapel Hill researchers discover new clues to how tardigrades can survive intense radiation

UT Arlington prioritizes entrepreneurship efforts

Ochsner Health receives 2024 Top Workplaces Culture Excellence Awards

Are these newly found rare cells a missing link in color perception?

[Press-News.org] Encoding computers of the future
Researchers develop a computer from an array of VCSELs with optical feedback