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Optics & Photonics Mar 3, 2025

A quantum computing startup says it is already making millions of light-powered chips

American quantum computing startup PsiQuantum announced yesterday that it has cracked a significant puzzle on the road to making the technology useful: manufacturing quantum chips in useful quantities.

Quantum Âé¶¹ÒùÔºics Feb 28, 2025

Inspired by Maxwell's demon, heat flow acts as a witness to quantum properties

In a new study published in Âé¶¹ÒùÔºical Review Letters, scientists have discovered a novel approach to detecting the quantum properties of a system by simply using heat as a witness, requiring no direct measurement of the quantum ...

Quantum Âé¶¹ÒùÔºics Feb 28, 2025

A new approach to reduce decoherence in superconducting qudit-based quantum processors

Quantum computers, which operate leveraging quantum mechanics effects, could soon outperform traditional computers in some advanced optimization and simulation tasks. Most quantum computing systems developed so far store ...

Quantum Âé¶¹ÒùÔºics Feb 26, 2025

How Schrödinger's cat could help improve quantum computers

Quantum computers could be made with fewer overall components, thanks to technology inspired by Schrödinger's cat. A team of researchers from Amazon Web Services has used "bosonic cat qubits," to improve the ability of quantum ...

Quantum Âé¶¹ÒùÔºics Feb 26, 2025

Engineers achieve multiplexing entanglement in quantum network

Laying the groundwork for quantum communication systems of the future, engineers at Caltech have demonstrated the successful operation of a quantum network of two nodes, each containing multiple quantum bits, or qubits—the ...

Nanophysics Feb 25, 2025

Mesoporous silicon: Etching technique reveals unique electronic transport properties

Silicon is the best-known semiconductor material. However, controlled nanostructuring drastically alters the material's properties. Using a specially developed etching apparatus, a team at HZB has now produced mesoporous ...

Quantum Âé¶¹ÒùÔºics Feb 20, 2025

Topological quantum processor uses Majorana zero modes for fault-tolerant computing

In a leap forward for quantum computing, a Microsoft team led by UC Santa Barbara physicists on Wednesday unveiled an eight-qubit topological quantum processor, the first of its kind. The chip, built as a proof-of-concept ...

Optics & Photonics Feb 20, 2025

Microwave-to-optics transduction: Research demonstrates readout technique for superconducting qubits

Joint research demonstrating the ability to readout superconducting qubits with an optical transducer was published in Nature Âé¶¹ÒùÔºics.

Quantum Âé¶¹ÒùÔºics Feb 19, 2025

What is quantum coherence?

We say a message is incoherent when we can't make it out, or when it doesn't make sense. A scribbled note, a drunken argument or a conversation taking place five tables down in a crowded cafe might all be incoherent. In general, ...

Quantum Âé¶¹ÒùÔºics Feb 18, 2025

Doubling down on a century-old math formula unlocks more controllable qubits

Âé¶¹ÒùÔºicists have found a simple and effective way to skip over an energy level in a three-state system, potentially leading to increased quantum computational power with fewer qubits.

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