Lifeboat Foundation

The quantum world and our world of perception obey different natural laws. Leiden physicists search for the border between both worlds. Now they suggest an upper limit in a study reported in Physical Review Letters.

The laws of the quantum domain do not apply to our everyday lives. We are used to assigning an exact location and time to objects. But fundamental particles can only be described by probability distributions—imagine receiving a traffic ticket for speeding 30 to 250 km/h somewhere between Paris and Berlin, with a probability peak for 140 km/h in Frankfurt.

Boundary

Continue reading “Upper limit found for quantum world” »

Quantum mechanics is littered with different interpretations, but at the core of the entire school of thought is the question of whether there are multiple universes of not. At the core of this idea is the thought, explicated by quantum mechanics, that everything we observe is simply the collapse of all probable scenarios into one specific outcome. Reality, viewed from that perspective, has a very cluttered cutting room floor. But are the things removed from the reel scraps or alternative narratives? There’s the big question.

To answer that question, we need to dive a bit into the mechanisms of the thing. Quantum mechanics says that all particles in the universe can be represented by what are called “wave functions.” A single wave function basically illustrates all the information about a specific system (i.e. a particle), detailing everything from position to velocity. The wave function itself also outlines all the probable outcomes of that system as well.

Continue reading “Prove the Multiverse or Die Trying” »

A new set of measurements provides the tightest ever constraint for the Bell parameter, which constitutes the closest ever approach to the Tsirelson bound.

“Suppose you want to travel from Helsinki to New York and you have to change your flight in London,” explains Sorin Paraoanu. “Normally you would first fly on a plane from Helsinki to London, then wait for some time in the airport in London, then board the flight London-New York. But in the quantum world, you would be better off boarding a plane from Helsinki to London sometime after the flight London-New York took off. You will not spend any time in London and you will arrive in New York right at the time when the plane from Hesinki lands in London.” This is mind-boggling but the experiment shows that it is indeed happening.

Besides the relevance for quantum computing, the result also has deep conceptual implications. Much of our understanding of the reality is based on the so-called continuity principle: the idea that influences propagate from here to there by going through all the places in-between. Real objects don’t just appear somewhere from nothing. But the experiment seems to defy this. Like in a great show of magic, quantum physics allows things to materialize here and there, apparently out of nowhere.

The team would like to acknowledge the excellent scientific environment created in the Low Temperature Laboratory (part of OtaNano) at the Department of Applied Physics.

Continue reading “Quantum physicists turn to the dark state” »

For now he remains hands off; however, once China rolls out their Quantum infrastructure; then what?

NORTH Korea’s bid to wreak havoc in the West with an army of computer nerds has been dealt a crushing blow.

Just as the single-crystal silicon wafer forever changed the nature of electronics 60 years ago, a group of Cornell researchers is hoping its work with quantum dot solids – crystals made out of crystals – can help usher in a new era in electronics.

The multidisciplinary team, led by Tobias Hanrath, associate professor in the Robert Frederick Smith School of Chemical and Biomolecular Engineering, and graduate student Kevin Whitham, has fashioned two-dimensional superstructures out of single-crystal building blocks. Through directed assembly and attachment processes, the lead selenide quantum dots are synthesized into larger crystals, then fused together to form atomically coherent square superlattices.

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I wish the CA AG a lot of luck; however, her approach is very questionable when you think about downstream access and feed type scenarios. Example, Business in Boston MA has an agreement with a cloud host company in CA, and Boston also has data that it pulls in from Italy, DE, etc. plus has a service that it offers to all of users and partners in the US and Europe that is hosted in CA.

How is the CA AG going to impose a policy on Boston? It can’t; in fact the business in Boston will change providers and choose to use someone in another state that will not impact their costs and business.

BTW — I didn’t even mention the whole recent announcement from China on deploying out a fully Quantum “secured” infrastructure. If this is true; everyone is exposed and this means there is no way companies can be held accountable because US didn’t have access to the more advance Quantum infrastructure technology.

Continue reading “Calif.‘s Harris Outlines ‘Reasonable’Data Security” »

Researchers from a university and Google demonstrate a crucial error-correction step needed to make quantum computing practical.

Russia is getting closer in perfecting Quantum Processors.

A team of physicists including Russian researchers succeeded in conducting an experiment in which, for the first time in history, control over ultrafast motion of electrons down to three attoseconds (one attosecond refers to a second as one second refers to the lifetime of the Universe) was proved possible (“Coherent control with a short-wavelength free-electron laser”). This fact paves a way to new directions of research that seemed improbable before. The experiment was conducted with the help of the free-electron laser FERMI located at the “Elettra Sincrotrone” research center in Trieste, Italy.

The speed of chemical, physical and biological processes is extremely high, atomic bonds are broken and restored within femtoseconds (one millionth of one billionth of a second). The Egyptian-American chemist Ahmed Zewail was the first to succeed in observing the dynamics of chemical processes, which made him a winner of the 1999 Nobel Prize in Chemistry.

Continue reading “Quantum processes control accurately to several attoseconds” »