• Welcome

    Using different theoretical methods, we are interested in the physics of engineered quantum systems as quantum electronic systems, superconducting quantum circuits and nanomechanical systems.

    Such systems are of interest because studying them can help us understand fundamental issues of the quantum mechanical theory. We explore strategies to create, detect and eventually control quantum states in solid-state nanodevices.

Current news

Measuring squeezing in a novel way

Our paper "Spectral evidence of squeezing of a weakly damped driven nanomechanical mode” has been published on Physical Review X. 

Fluctuations are omnipresent in nature, limiting the resolution of quantum as well as classical signals. The technique employed to increase the resolution of oscillating signals, laser radiation being an example, is squeezing fluctuations in one of the components of the signal and then using this component for applications. In this work we demonstrate a conceptually…

Read more

 

 

Quantum tunneling with dissipative frustration

Our paper on Effects of a dissipative coupling to the momentum of a particle in a double well potential is now published on Physical Review Research (open access).

Dissipation is considered to be one of the main sources of decoherence, making the preservation of desired quantum states in quantum devices a hard challenge. However, in our work we show that a dissipative coupling to the momentum of a particle in a double well potential can enhance quantum effects. Momentum dissipation increases…

Single-photon pump by Cooper-pair splitting

Our paper on Single-photon pump by Cooper-pair splitting is now published on Physical Review Research (open access).

Superconductors are a natural source of entangled electrons that can be used to induce nonlocal correlations through Cooper-pair breaking. In this work, we show that a Cooper-pair splitter utilizing quantum dots can be used as a photon bus to transfer energy between two distant resonators, by tuning gate voltages to match internal resonances. The proposed scheme has relevant…

Read more