Quantum Superposition

Quantinuum's 56-bit trapped-ion computer has succeeded in demonstrating randomness in quantum circuits to establish secure, private connections

Explore the key moments in the history of quantum theory, from the early ideas of Albert Einstein and Werner Heisenberg to the discovery of phenomena like superposition and entanglement – and today's quantum computers

Useful quantum networks are hobbled by the problem of decoherence from environmental "noise." But a new breakthrough could change that.

Physicists at the University of Innsbruck have succeeded in creating hot Schrödinger cat states in a superconducting microwave resonator.

Schrödinger's cat is scratching its head over the "topological" qubit that is causing a buzz in quantum computing. We should be, too

Dubbed Ocelot, it's designed to correct errors with less hardware overhead.

In 1981, American physicist and Nobel Laureate, Richard Feynman, gave a lecture at the Massachusetts Institute of Technology (MIT) near Boston, in which he outlined a revolutionary ...

They offer immersive, interactive exhibits and educational programs

Quantum technology company Alice & Bob outlines its plan for quantum computing by 2030, but how feasible is that goal?

The reference frames from which observers view quantum events can themselves have multiple possible locations at once—an insight with potentially major ramifications.

Letters to the editors for the September 2024 issue of Scientific American

Whoa.

Researchers have used atoms trapped by light to sustain quantum superposition. The cat is both dead and alive.

Quantum computers will one day outpace the fastest supercomputers on the planet, but what will they be used to accomplish?

Two algorithms added so far, two more planned in the coming months.

While devising a new quantum algorithm, four researchers accidentally established a hard limit on the "spooky" phenomenon.

Quantum physicists have developed an algorithm that uses a single qubit to solve a problem that had previously needed thousands of them.

Researchers from North Carolina State University and the Massachusetts Institute of Technology have designed a protocol for harnessing the power of quantum sensors. The protocol could give sensor designers the ability to fine-tune quantum systems to sense signals of interest, creating sensors that are vastly more sensitive than traditional sensors.

We've always been able to turn back time—sort of.

Researchers used quantum simulations to obtain new insights into the nature of neutrinos—the mysterious subatomic particles that abound throughout the universe—and their role in the deaths of massive stars.