Audrey Bienfait

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: Full quantum control of the mechanical state of a macroscale mechanical resonator is demonstrated and a non-classical superposition of zero- and one-phonon mechanical Fock states is generated and measured by strongly coupling a surface acoustic-wave resonator to a superconducting qubit.

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.

TL;DR: Measurements of superconducting flux qubits embedded in a three dimensional copper cavity show a significant improvement over previous works, which opens the way to the coherent coupling of a flux qubit to individual spins.

TL;DR: In this article, the authors demonstrate full quantum control of the mechanical state of a macroscopic mechanical resonator using a superconducting qubit, using the qubit to control and measure quantum states in the mechanical system.