Physicists from Swansea University are part of an international research collaboration which has identified a new technique for testing the quality of quantum correlations.
Quantum computers run their algorithms on large quantum systems of many parts, called qubits, by creating quantum correlations across all of them. It is important to verify that the actual computation procedures lead to quantum correlations of desired quality.
However, carrying out these checks is resource-intensive as the number of tests required grows exponentially with the number of qubits involved.
Inside the symmetries of a crystal shape, a postdoctoral researcher has unearthed a counterexample to a basic conjecture about multiplicative inverses.
Donna butts — executive director, generations united — focusing on the psycho-social aspects of healthy aging and wellness.
Donna Butts is the Executive Director of Generations United, an organization with a mission to improve the lives of children, youth, and older people through intergenerational collaboration, public policies, and programs for the enduring benefit of all, a position she has held since 1997. For more than 30 years, Ms. Butts has worked tirelessly to promote the well-being of children, youth and older adults through nonprofit organizations across the country and around the world. She began her career in her home state of Oregon as a youth worker with the YWCA, where she worked one-on-one with teens and saw the positive effects of intergenerational programs firsthand.
Ms. Butts has held leadership positions with Covenant House, a New York-based international youth serving organization, and the National 4-H Council. She served as the Executive Director for the National Organization on Adolescent Pregnancy, Parenting and Prevention before taking the helm of Generations United.
An internationally sought-after speaker, author and advocate, Ms. Butts frequently speaks on intergenerational connections, grandparents raising grandchildren and policies effective across the lifespan. Her commentary has appeared in the New York Times, the Washington Post, the Christian Science Monitor and the Wall Street Journal. She has been interviewed on the TODAY Show, National Public Radio and ABC News, and was invited by the United Nations to sit on four expert panels most recently on intergenerational solidarity and social cohesion in preparation for the 2014 20th anniversary of the International Year or the Family.
In 2004, Ms. Butts was honored with the National Council on Aging’s Jack Ossofsky for Leadership, Creativity, and Innovation in Programs and Services for Older Persons. She served as a 2005 delegate to the White House Conference on Aging. A respected author, she has written countless articles, chapters and publications regarding the welfare of children, youth and older adults.
Covid variants will be the next big challenge. Can vaccines protect us?
All viruses mutate. They do this to adapt and survive better in their specific host. The virus that causes Covid-19 is no different: it has moved from the animal realm, where it most likely originated in bats, to the human world. Since then, scientists have been locked in a battle between the spread of the virus and the ability to immunise against it. We now have the vaccines to protect us against Covid-19 – but what happens when this virus mutates further, as it likely will? {“uid”:0.9208093413637026,” hostPeerName”:” https://amp-theguardian-com.cdn.ampproject.
After a year of lockdown, many of us are finding it hard to think clearly, or remember what happened when. Neuroscientists and behavioural experts explain why.
A never-before-seen particle has revealed itself in the hot guts of two particle colliders, confirming a half-century-old theory.
Scientists predicted the existence of the particle, known as the odderon, in 1973, describing it as a rare, short-lived conjointment of three smaller particles known as gluons. Since then, researchers have suspected that the odderon might appear when protons slammed together at extreme speeds, but the precise conditions that would make it spring into existence remained a mystery. Now, after comparing data from the Large Hadron Collider (LHC), the 17-mile-long (27 kilometers) ring-shaped atom smasher near Geneva that’s famous for discovering the Higgs boson, and the Tevatron, a now-defunct 3.9-mile-long (6.3 km) American collider that slammed protons and their antimatter twins (antiprotons) together in Illinois until 2011, researchers report conclusive evidence of the odderon’s existence.
The reality is Benny and Josh both have Canavan disease, a fatal inherited brain disorder. They are buckled into wheelchairs, don’t speak, and can’t control their limbs.
On Thursday, April 8, in Dayton, Ohio, Landsman and his family rolled the older boy, Benny, into a hospital where over several hours, neurosurgeons drilled bore holes into his skull and injected trillions of viral particles carrying the correct version of a gene his body is missing.
