Category: News

When quan­tum par­ti­cles fly like bees
News, News, Technology

When quan­tum par­ti­cles fly like bees

At first glance, a system consisting of 51 ions may appear simple. But even if these charged atoms can only assume two different states, there will be more than two quadrillion (1015) different configurations which the system can realize. The behavior of such a system can therefore hardly be calculated with conventional computers. Especially since once an excitation […]

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Scalable estimation of pure multi-qubit states
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Scalable estimation of pure multi-qubit states

Researchers have introduced an inductive n-qubit pure-state estimation method based on projective measurements on mn + 1 separable bases or m entangled bases plus the computational basis, with m ≥ 2. The method exhibits a favorable scaling in the number of qubits compared to other estimation schemes. The use of separable bases makes their estimation method particularly well suited for applications in noisy intermediate-scale […]

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New EPSRC-funded project will enable greater sustainability for future infrastructure projects
News, News, Sensing, UK, UK Quantum Technology Hub

New EPSRC-funded project will enable greater sustainability for future infrastructure projects

A new project undertaken by a University of Birmingham researcher at the UK Quantum Technology Hub Sensors and Timing along with colleagues in the School of Engineering will help to facilitate greater sustainability for future infrastructure projects through deploying novel solutions for reusing structural steel. The project, which is titled Reuse of Structural Steel in […]

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Reconfigurable continuously-coupled 3D photonic circuit for Boson Sampling experiments
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Reconfigurable continuously-coupled 3D photonic circuit for Boson Sampling experiments

Boson Sampling is a computational paradigm representing one of the most viable and pursued approaches to demonstrate the regime of quantum advantage. Recent results have shown significant technological leaps in single-photon generation and detection, leading to progressively larger instances of Boson Sampling experiments in different photonic systems. However, a crucial requirement for a fully-fledged platform […]

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More efficiency for optical quantum gates
Germany, News, News, Technology

More efficiency for optical quantum gates

Researchers at the Max Planck Institute of Quantum Optics succeeded in massively improving the performance of a component that is crucial to optical quantum systems. Future quantum computers are expected not only to solve particularly tricky computing tasks, but also to be connected to a network for the secure exchange of data. In principle, quantum […]

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New quantum superposition measurement
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New quantum superposition measurement

A new two-path-interference experiment has been designed at TU Wien that only has to measure one specific particle to prove quantum superposition. A single neutron is measured at a specific position — and due to the sophisticated measurement setup, this single measurement proofs already that the particle moved along two different paths at the same […]

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Impact of the valley orbit coupling on exchange gate for spin qubits in silicon
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Impact of the valley orbit coupling on exchange gate for spin qubits in silicon

The mixing of conduction band valleys plays a critical role in determining electronic spectrum and dynamics in a silicon nanostructure. Researchers have investigated theoretically how valley–orbit coupling affects the exchange interaction in a silicon double quantum dot. They found that exchange splitting can be strongly suppressed at finite valley phase differences between the dots because […]

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Computational sleuthing confirms first 3D quantum spin liquid
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Computational sleuthing confirms first 3D quantum spin liquid

Computational detective work by physicists has confirmed cerium zirconium pyrochlore is a 3D quantum spin liquid, a solid material in which quantum entanglement and the geometric arrangement of atoms cause electrons to fluctuate between quantum magnetic states no matter how cold they become. Despite the name, quantum spin liquids are solid materials in which quantum […]

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