Quantum-mechanical effects at the macroscopic level were first explored in Josephson-
junction-based superconducting circuits in the 1980s. In recent decades, the emergence of …

The rise of quantum information science has provided new perspectives on quantum
mechanics, as well as a common language for quantum engineering. The focus on platforms …

Electron spin resonance spectroscopy is the method of choice for characterizing
paramagnetic impurities, with applications ranging from chemistry to quantum computing …

Long coherence times of single spins in silicon quantum dots make these systems highly
attractive for quantum computation, but how to scale up spin qubit systems remains an open …

Coupled microwave photon-magnon hybrid systems offer promising applications by
harnessing various magnon physics. At present, in order to realize high coupling strength …

Quantum information technology based on solid state qubits has created much interest in
converting quantum states from the microwave to the optical domain. Optical photons, unlike …

Erbium ions embedded in crystals have unique properties for quantum information
processing, because of their optical transition at 1.5 μm and of the large magnetic moment of …

Single photon detection is a key resource for sensing at the quantum limit and the enabling
technology for measurement-based quantum computing. Photon detection at optical …

Practical quantum computers require a large network of highly coherent qubits,
interconnected in a design robust against errors. Donor spins in silicon provide state-of-the …

We review the progress made in integrating magnetic molecules containing transition metal
ions into nanoelectronic solid-state devices and using them as molecular spin qubits …