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Quantum Physics Oct 14, 2024

Study explores the physical origin of errors in a spin qubit processor

To achieve remarkable performances, quantum computing systems based on multiple qubits must attain high-fidelity entanglement between their underlying qubits. Past studies have shown that solid-state quantum platforms—quantum ...

Optics & Photonics Oct 9, 2024

Quantum physicists tap into entanglement to improve the precision of optical atomic clocks

Imagine walking into a room where several different grandfather clocks hang on the walls, each ticking at a different pace. Quantum physicists at the University of Colorado Boulder and the National Institute of Standards ...

Optics & Photonics Oct 9, 2024

Quantum register reaches 1,200 neutral atoms in continuous operation

A team of physicists led by Johannes Zeiher, research group leader in Immanuel Bloch's Quantum Many-Body Systems department and co-founder of the MPQ spin-off planqc, has achieved significant progress in scaling up quantum ...

Quantum Physics Oct 4, 2024

Quantum communication: Using microwaves to efficiently control diamond qubits

In a first for Germany, researchers at the Karlsruhe Institute of Technology (KIT) have shown how tin vacancies in diamonds can be precisely controlled using microwaves. These vacancies have special optical and magnetic properties ...

Superconductivity Oct 4, 2024

Direct measurement of a subtle current phase relation shows potential for more stable superconducting qubits

In recent years, quantum physicists and engineers have made significant strides toward the development of highly performing quantum computing systems. Realizing a quantum advantage over classical computing systems and enabling ...

Quantum Physics Oct 3, 2024

Physicists achieve strong coupling of Andreev qubits via microwave resonator

Physicists from the University of Basel have succeeded in coupling two Andreev qubits coherently over a macroscopic distance for the first time. They achieved this with the help of microwave photons generated in a narrow ...

Nanophysics Oct 2, 2024

Researchers create orientation-independent magnetic field-sensing nanotube spin qubits

Purdue University researchers have developed patent-pending one-dimensional boron nitride nanotubes (BNNTs) containing spin qubits, or spin defects. The BNNTs are more sensitive in detecting off-axis magnetic fields at high ...

Quantum Physics Oct 1, 2024

First-ever teleportation of logical qubit using fault-tolerant methods

A team of engineers and physicists at quantum computing company Quantinuum has conducted the first-ever teleportation of a logical qubit using fault-tolerant methods. In their paper published in the journal Science, the group ...

Optics & Photonics Sep 23, 2024

Controlling light while measuring trapped ion qubits

Quantum information is fragile and often difficult to protect during experiments. Protecting qubits from accidental measurements is essential for controlled quantum operations, especially during state-destroying measurements ...

Quantum Physics Sep 18, 2024

Different qubit architecture could enable easier manufacturing of quantum computer building blocks

Scientists from the U.S. Department of Energy's (DOE) Brookhaven National Laboratory have shown that a type of qubit whose architecture is more amenable to mass production can perform comparably to qubits currently dominating ...

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