Yuimaru Kubo

TL;DR: Some of the driving theoretical ideas and first experimental realizations of hybrid quantum systems and the opportunities and challenges they present are reviewed and offers a glance at the near- and long-term perspectives of this fascinating and rapidly expanding field.

TL;DR: A quantum circuit in which an ensemble of electronic spins is coupled to a frequency tunable superconducting resonator and the appearance of a vacuum Rabi splitting in the transmission spectrum of the resonator when its frequency is tuned through the nitrogen-vacancy center electron spin resonance.

TL;DR: Using a hybrid quantum circuit combining a superconducting qubit and an ensemble of electronic spins, a superposition of the qubit states is prepared that is stored into collective excitations of the spin ensemble and retrieved back into the qubits later on.

TL;DR: This work improves the state-of-the-art sensitivity of inductive ESR detection by nearly four orders of magnitude, and demonstrates the detection of 1,700 bismuth donor spins in silicon within a single Hahn echo with unit signal-to-noise ratio.

TL;DR: The results provide a general way to initialize spin systems into their ground state and therefore have applications in magnetic resonance and quantum information processing and demonstrate that the coupling between the magnetic dipole of a spin and the electromagnetic field can be enhanced up to the point at which quantum fluctuations have a marked effect on the spin dynamics.