“Quantum sensing” describes the use of a quantum system, quantum properties, or quantum
phenomena to perform a measurement of a physical quantity. Historical examples of …

Quantum technologies represent a rapidly evolving field in which the specific properties of
quantum mechanical systems are exploited to enhance the performance of various …

Realizing a long coherence time quantum memory is a major challenge of current quantum
technology. Until now, the longest coherence-time of a single qubit was reported as 660 s in …

Practical and useful quantum information processing requires substantial improvements with
respect to current systems, both in the error rates of basic operations and in scale. The …

Quantum sensing takes advantage of well-controlled quantum systems for performing
measurements with high sensitivity and precision. We have implemented a concept for …

A long-time quantum memory capable of storing and measuring quantum information at the
single-qubit level is an essential ingredient for practical quantum computation and …

The advent of quantum devices, which exploit the two essential elements of quantum
physics, coherence and entanglement, has sparked renewed interest in the control of open …

Quantum metrology has been studied for a wide range of systems with time-independent
Hamiltonians. For systems with time-dependent Hamiltonians, however, due to the …

Generating ion-photon entanglement is a crucial step for scalable trapped-ion quantum
networks. To avoid the crosstalk on memory qubits carrying quantum information, it is …

Electron spins in solids constitute remarkable quantum sensors. Individual defect centers in
diamond were used to detect individual nuclear spins with a nanometer scale resolution …