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Generating two continuous entangled microwave beams using a dc-biased Josephson junction
A. Peugeot, G. Ménard, S. Dambach +14
We show experimentally that a dc-biased Josephson junction in series with two microwave resonators emits entangled beams of microwaves leaking out of the resonators. In the absence…
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…
Antibunched photons emitted by a dc biased Josephson junction
C. Rolland, A. Peugeot, S. Dambach +11
We show experimentally that a dc biased Josephson junction in series with a high-enough impedance microwave resonator emits antibunched photons. Our resonator is made of a simple m…
Design of a Cooper pair box electrometer for application to solid-state and astroparticle physics
Leandro Tosi, Denis Vion, Hélène le Sueur
We describe the design and principle of operation of a fast and sensitive electrometer operated at millikelvin temperatures, which aims at replacing conventional semiconducting cha…
Quantum limited amplification from inelastic Cooper pair tunneling
S. Jebari, F. Blanchet, A. Grimm +7
Nature sets fundamental limits regarding how accurate the amplification of analog signals may be. For instance, a linear amplifier unavoidably adds some noise which amounts to half…
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…