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Pulsed electron spin resonance spectroscopy in the Purcell regime
Vishal Ranjan, Sebastian Probst, Bartolo Albanese +8
When spin relaxation is governed by spontaneous emission of a photon into the resonator used for signal detection (the Purcell effect), the relaxation time depends on the spi…
Magnetic resonance with squeezed microwaves
A. Bienfait, P. Campagne-Ibarcq, A. Holm-Kiilerich +9
Vacuum fluctuations of the electromagnetic field set a fundamental limit to the sensitivity of a variety of measurements, including magnetic resonance spectroscopy. We report the u…
Fluctuation-Dissipation Relations of a Tunnel Junction Driven by a Quantum Circuit
O. Parlavecchio, C. Altimiras, J. -R. Souquet +7
We derive fluctuation-dissipation relations for a tunnel junction driven by a high impedance microwave resonator, displaying strong quantum fluctuations. We find that the fluctuati…
Flux Qubits with Long Coherence Times for Hybrid Quantum Circuits
Michael Stern, Gianluigi Catelani, Yuimaru Kubo +5
We present measurements of superconducting flux qubits embedded in a three dimensional copper cavity. The qubits are fabricated on a sapphire substrate and are measured by coupling…
Storage and Retrieval of a Microwave Field in a Spin Ensemble
Y. Kubo, I. Diniz, A. Dewes +7
We report the storage and retrieval of a small microwave field from a superconducting resonator into collective excitations of a spin ensemble. The spins are nitrogen-vacancy cente…
Circuit QED with a Nonlinear Resonator : ac-Stark Shift and Dephasing
F. R. Ong, M. Boissonneault, F. Mallet +7
We have performed spectroscopic measurements of a superconducting qubit dispersively coupled to a nonlinear resonator driven by a pump microwave field. Measurements of the qubit fr…