Marius Bild

Jun 21, 2024 | nature.com | Marius Bild |Stefano Marti |Andraz Omahen

AbstractMechanical degrees of freedom are natural candidates for continuous-variable quantum information processing and bosonic quantum simulations. However, these applications require the engineering of squeezing and nonlinearities in the quantum regime. Here we demonstrate squeezing below the zero-point fluctuations of a gigahertz-frequency mechanical resonator coupled to a superconducting qubit. This is achieved by parametrically driving the qubit, which results in an effective two-phonon drive.

Apr 20, 2023 | science.org | Yaffa Epstein |Gregor Semieniuk |Shonali Pachauri |Marius Bild

Schrodinger’s cats, kittens, and lionsThe idea of Schrodinger’s cat being both alive and dead at the same time—its fate revealed only upon inspection—came from a thought experiment that pointed out an absurdity in the interpretation of quantum mechanics at the time. However, because such superposition states have now been prepared in many different quantum systems, the question is where do the classical and quantum worlds part company? Bild et al.