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Testing Kubo formula on a nonlinear quantum conductor driven far from equilibrium via power exchanges
Zubair Iftikhar, Jonas Müller, Yuri Mukharsky +3
We present an experimental test of Kubo formula performed on a nonlinear quantum conductor, a Superconductor-Insulator-Superconductor tunnel junction, driven far from equilibrium b…
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…
Absence of a dissipative quantum phase transition in Josephson junctions
Anil Murani, Nicolas Bourlet, Hélène le Sueur +7
Half a century after its discovery, the Josephson junction has become the most important nonlinear quantum electronic component at our disposal. It has helped reshape the SI system…
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…
Parametric amplification and squeezing with an ac- and dc-voltage biased superconducting junction
Udson C. Mendes, Sébastien Jezouin, Philippe Joyez +5
We theoretically investigate a near-quantum-limited parametric amplifier based on the nonlinear dynamics of quasiparticles flowing through a superconducting-insulator-superconducti…
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…