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Tag Archives: Quantum

The collaboration provides promising material for quantum computing

Figure a: Graphic with the three materials that have been combined to form the new material. Al is aluminum – the superconductor, EuS is the new addition, europium sulfide – the ferromagnet and InAs is indium arsenide – the semiconductor. In combination, they enable the existence of the desired Majorana null modes, whereby the quantum wire device can be an …

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The bizarre response to magnetism is a puzzle in quantum physics

Schematic representation of the magnetism and the conductivity on the surface of MnBi2Te4. The magnetism points evenly upwards, as shown by the red arrows, and the surface electrons, which are represented by the hourglass structures, are conductive, as the upper and lower halves touch at the apex with no “gap” in the middle (see text) . These two features are …

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We just found another obstacle to overcoming quantum computers

Keeping qbits stable – these quantum equivalents of classic computing bits – will be the key to realizing the potential of quantum computers. Now scientists have found a new barrier to this stability: natural radiation. Natural radiation or background radiation comes from all kinds of natural and man-made sources. Cosmic rays, for example, contribute to natural radiation, as does concrete …

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IBM customers show us why it is important to develop a quantum computing strategy today

Bob Sutor, VP of IBM’s Quantum Ecosystem Development IBM Technology moves fast. Scientists are already developing the next generation of computers, quantum computing. Over the past year I have had several opportunities to speak to Bob Sutor, VP of IBM’s Quantum Ecosystem Development, about developments in this area. While quantum computers are not a household term, Sutor shared that it …

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Hartree-Fock on a superconducting qubit quantum computer

Twelve qubit quantum computers for chemistry Accurate electronic structure calculations are considered to be one of the most anticipated applications of the quantum computer that will revolutionize theoretical chemistry and other related fields. Using the Google Sycamore quantum processor, Google AI Quantum and coworkers performed a VQE (Variational Quantum Self Solver) simulation of two medium-scale chemical problems: the binding energy …

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Quantum computer power could soon hit a wall due to interference from cosmic rays

An MIT study reports that incident cosmic rays can limit qubit performance and hinder progress in quantum computing. Photo credit: Christine Daniloff, MIT Researchers note that underground quantum computers may need to be built or radiation-safe qubits designed. The practicality of Quantum computing depends on the integrity of the quantum bit or qubit. Qubits, the logical elements of quantum computers, …

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Cosmic rays could soon hinder quantum computing

Natural radiation can interfere with both superconducting dark matter detectors (shown here) and superconducting qubits. Photo credit: Timothy Holland, PNNL The practicality of the quantum computer depends on the integrity of the quantum bit or qubit. Qubits, the logical elements of quantum computers, are coherent two-level systems that represent quantum information. Each qubit has the strange ability to be in …

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Quantum reality is either strangely different or it breaks down

Denver Post Inc (Photo by David Cupp / The Denver Post via Getty Images) On closer inspection, quantum mechanics raises some deep questions about reality. These questions often come in the form of thought experiments, which are later (usually much later) followed by real experiments. One of the most difficult and deepest of these is a thought experiment that Eugene …

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