The nitrogen-vacancy (NV) colour centre in diamond is an important physical system for
emergent quantum technologies, including quantum metrology, information processing and …

Over the past several decades, quantum information science has emerged to seek answers
to the question: can we gain some advantage by storing, transmitting and processing …

We investigate what a snapshot of a quantum evolution—a quantum channel reflecting open
system dynamics—reveals about the underlying continuous time evolution. Remarkably …

Coherent coupling between single quantum objects is at the very heart of modern quantum
physics. When the coupling is strong enough to prevail over decoherence, it can be used to …

Characterization of quantum dynamics is a fundamental problem in quantum physics and
quantum-information science. Several methods are known which achieve this goal, namely …

Although geometric phases in quantum evolution are historically overlooked, their active
control now stimulates strategies for constructing robust quantum technologies. Here, we …

The realization of fast fault-tolerant quantum gates on a single spin is the core requirement
for solid-state quantum-information processing. As polarized light shows geometric …

Quantum gates must perform reliably when operating on standard input basis states and on
complex superpositions thereof. Experiments using superconducting qubits have validated …

Machine learning methods have proved to be useful for the recognition of patterns in
statistical data. The measurement outcomes are intrinsically random in quantum physics …

We expand the set of initial states of a system and its environment that are known to
guarantee completely positive reduced dynamics for the system when the combined state …