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Search results for single-qubit

Optics & Photonics Jul 9, 2024

Photons from quantum dot emitters violate Bell inequality in new study

A new study in Nature Âé¶¹ÒùÔºics demonstrates a novel method for generating quantum entanglement using a quantum dot, which violates the Bell inequality. This method uses ultra-low power levels and could pave the way for scalable ...

Nanophysics Jul 1, 2024

Can a computer chip have zero energy loss in 1.58 dimensions?

What if we could find a way to make electric currents flow, without energy loss? A promising approach for this involves using materials known as topological insulators. They are known to exist in one (wire), two (sheet) and ...

Quantum Âé¶¹ÒùÔºics Jun 26, 2024

Understanding quantum states: New research shows importance of precise topography in solid neon qubits

Quantum computers have the potential to be revolutionary tools for their ability to perform calculations that would take classical computers many years to resolve.

Quantum Âé¶¹ÒùÔºics Jun 25, 2024

Foregoing quantum chaos to achieve high-fidelity quantum state transfer

An international team of scientists from China and the U.S. has developed a scalable protocol for high-fidelity quantum state transfer (QST) in a 36-qubit superconducting quantum circuit.

Condensed Matter Jun 20, 2024

An alternative way to manipulate quantum states

Researchers at ETH Zurich have shown that quantum states of single electron spins can be controlled by currents of electrons whose spins are evenly aligned. In the future, this method could be used in electronic circuit elements.

Optics & Photonics Jun 19, 2024

Researchers develop platform to probe, control qubits in silicon for quantum networks

The quantum internet would be a lot easier to build if we could use existing telecommunications technologies and infrastructure. Over the past few years, researchers have discovered defects in silicon—a ubiquitous semiconductor ...

Condensed Matter Jun 19, 2024

Discovery of one-dimensional topological insulator for qubits, other technology

A joint research team that included members from Tohoku University has unveiled a new topological insulator (TI), a unique state of matter that differs from conventional metals, insulators, and semiconductors.

Quantum Âé¶¹ÒùÔºics Jun 17, 2024

Squeezing Schrödinger's cat may increase quantum sensitivity

One of the most counter-intuitive aspects of quantum physics is the idea that a quantum system, unlike a physical system governed by the everyday physics of the macroscopic universe, can exist in two states at once even if ...

General Âé¶¹ÒùÔºics Jun 7, 2024

QUIET: A place to study qubits shielded from the effects of cosmic rays

Deep under the ground at Fermi National Accelerator Laboratory is a brand-new quantum sensor and computing research center called QUIET, and at the surface—100 meters above—sits its twin called LOUD.

Condensed Matter Jun 3, 2024

Scientists bring crystal clarity to diamond's quantum signals

They say that one can miss the forest for the trees. But it's often worth taking a closer look at the trees to make sense of the dense, brambly whole. That's what a Stanford University group did to tackle a thorny quantum-information ...

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