Quantum sensing with duplex qubits of silicon vacancy centers in SiC at room temperature

Quantum sensing with duplex qubits of silicon vacancy centers in SiC at room temperature

Silicon vacancy centers in Silicon Carbide show promise as room-temperature qubits for quantum sensing applications, with researchers demonstrating that simultaneously operating both transitions in the spin-3/2 quartet through a novel duplex qubit scheme doubles the signal contrast and improves sensitivity compared to conventional single-qubit approaches.

Conceptual schematic and performance advantage of the in-cavity protocol.

Quantum-Enhanced Dark Matter Detection Beyond Rayleigh Limits

Researchers propose a novel quantum sensing protocol that uses in-cavity squeezed states and optimized transient control to mitigate the Rayleigh curse limitation, enabling more sensitive dark matter detection in microwave cavities without requiring non-Gaussian quantum resources that would be incompatible with the strong magnetic fields needed for axion searches.

Quantum imaging protocol with photon pairs from a nonlinear metasurface.

Quantum Imaging Revolution: Metasurfaces Break Resolution Limits

Scientists at the ARC Centre of Excellence for Transformative Meta-Optical Systems have developed a groundbreaking quantum imaging technique using an ultra-thin nonlinear metasurface that generates spatially entangled photon pairs, eliminating the need for mechanical scanning and achieving resolution four orders of magnitude better than conventional systems, paving the way for compact quantum imaging applications in LiDAR, secure communication, and advanced sensing.

The Tweezer Team at Durham University and their experimental apparatus. From left: Dr. Daniel Ruttley, Prof. Simon Cornish, Dr. Alexander Guttridge, and Mr. Tom Hepworth. Credit: Durham University

Record-Breaking Entanglement with Magic-Wavelength Tweezers

Quantum entanglement is a remarkable phenomenon where two particles become interconnected, so that the state of one instantly affects the other, no matter how far apart they are. This unique property is a cornerstone of quantum computing and a range of advanced technological applications. While entanglement has been achieved with atoms, achieving it with complex molecules is a significant step forward because molecules offer additional structures and properties, such as vibration and rotation, that can be leveraged in advanced quantum applications.

Quadrupolar Resonance Spectroscopy of Individual Nuclei Using a Room-Temperature Quantum Sensor

Engineers Break Ground with Single-Atom Detection Technology

Engineers at Penn Engineering have achieved a remarkable advancement in Nuclear Quadrupolar Resonance (NQR) spectroscopy, developing a technique capable of detecting signals from individual atoms. This breakthrough represents a significant leap forward from traditional methods […]

Bright Quantum-Grade Fluorescent Nanodiamonds

Next-Generation Nanodiamond Sensors Achieve Quantum-Grade Performance

Japanese researchers have achieved a significant advancement in quantum sensing technology by developing nanodiamond sensors that combine excellent brightness for bioimaging with quantum-grade spin properties comparable to bulk diamonds. This breakthrough, published in ACS Nano […]

Unlocking the Nano Universe: A Quantum Leap in Magnetic Imaging

A Quantum Leap in Magnetic Imaging

Researchers from Martin Luther University Halle-Wittenberg (MLU) and the Max Planck Institute of Microstructure Physics in Halle have developed a groundbreaking method to analyze magnetic nanostructures with exceptional precision. This technique achieves a resolution of […]

Building a quantum sensor.

End-to-end variational quantum sensing

npj Quantum Information, Published online: 19 November 2024; doi:10.1038/s41534-024-00914-w Harnessing quantum correlations can enable sensing beyond classical precision limits, with the realization of such sensors poised for transformative impacts across science and engineering. Real devices, […]

Exploring emerging quantum technologies with the Economist

The 3rd annual Commercialising Quantum Global event took place on 5th June 2024, and included significant participation from UK Quantum Technology Hub Sensors and Timing researchers across the consortium. Hosted by Economist Impact, the summit […]

UK Quantum Technology Hub Sensors and Timing Logo

Next step towards navigation tools of the future

Last week, University of Birmingham physicists and engineers from UK Quantum Technology Hub Sensors and Timing departed the UK on ship alongside Dstl scientists to continue the next phase of quantum experiments that could pave […]

University of Birmingham Logo

Delta g raises £1.5m to build gravity gradiometry platform

A new University of Birmingham spinout, Delta g, has raised £1.5 million in its pre-seed investment round to fast-track the commercial availability of its ground-breaking quantum technology gravity sensors for mapping the underground space. The […]

Superconducting circuit (white) on a silicon substrate fixed in a copper holder. The chip (silver) with the micromechanical oscillator is attached to the silicon substrate.

Blast chiller for the quantum world

The quantum nature of objects visible to the naked eye is currently a much-discussed research question. A team has now demonstrated a new method in the laboratory that could make the quantum properties of macroscopic objects more accessible than before. With the method, the researchers were able to increase the efficiency of an established cooling method by an order of a magnitude.

Schematic levels of the 171Yb+ atomic sensor and the experimental setup

A neural network assisted 171Yb+ quantum magnetometer

A versatile magnetometer must deliver a readable response when exposed to target fields in a wide range of parameters. Researchers have experimentally demonstrated that the combination of 171Yb+ atomic sensors with adequately trained neural networks enables […]

Cryostat used to achieve temperatures down to 20 millikelvin. Source: HZDR/Jürgen Jeibmann

An exotic interplay of electrons

Water that simply will not freeze, no matter how cold it gets — a research group has discovered a quantum state that could be described in this way. Experts have managed to cool a special material to near absolute zero temperature. They found that a central property of atoms — their alignment — did not ‘freeze’, as usual, but remained in a ‘liquid’ state. The new quantum material could serve as a model system to develop novel, highly sensitive quantum sensors.