Paolo Silvestrini | Searcharxiv

arXiv2026

Bose condensation and Bogoliubov excitation in resonator-embedded superconducting qubit network

Superconducting qubit networks (SQNs) embedded in a low-dissipative resonator is a promising device allowing one not only to establish the collective quantum dynamics on a macroscopic scale but also to greatly enhance the sensitivity of detectors of microwave photons. A quantum ac Stark effect provided by coupling between an SQN and microwave photons of a resonator, leads to a strong nonlinear interaction between photons. Here, we present a two-tone spectroscopy experiment in which a set of 10 superconducting flux qubits is coupled to the input R- resonator and the output T- transmission line. An external microwave pump field close to the resonance frequency populates macroscopically the resonator mode as a Bose-Einstein condensate, while a second probe beam scans the resonances referred also as Bogoliubov-like excitations. The corresponding excitation frequency measured from the transmission coefficient, |S21(f)| displays an abrupt change of the resonant dip position once the power of the pump field overcomes a critical value Pcr. This sharp shift occurs in a narrow region of pump frequencies, and can be tuned by an applied magnetic field. It is a signature of bistability of the photon number inside the resonator, in agreement with theory.

quant-ph↗

arXiv2021

The synchronic principle for a new scientific method

Local realism has been superseded by recent theoretical and experimental developments in quantum physics which show a synchronic connection between the parts. In contrast to the principle of local realism, which is the basis of classical reductionism, I have called the principle of non-locality at the basis of a new method of scientific investigation "synchronic principle". The synchronic principle introduces a new element in the approach to reality, which with anthropomorphic terms we could call "conscious choice". In a synchronic paradigm, evolution does not occur in a deterministic way, but is characterized by a certain intrinsic freedom of choice that we associate with awareness. Considerations based on the evolution of the universe towards the emergence of life lead us to think that this "awareness" also exists in the vacuum state: in the model I proposed a definition of the agents of consciousness in terms of arrays of correlated qu-bit, from the simplest consisting of 6 qu-bits of the quantum vacuum (which result as a superposition of 64 base states), up to the most complex organisms consisting of a very large number of correlated quantum bits. Some of the fundamental vacuum states of consciousness can be related to known elementary particles (leptons and quarks) and to fundamental interactions. The rest constitute purely non-local elements of consciousness with no counterpart in terms of wave or particle within the local observation limit. In this model, consciousness processes quantum information through logic gates and collapses as a result of observations, like a quantum computer does. Synchronicity does not in deny the conclusions reached by traditional science can be used at the local level, but opens scientific knowledge to new possibilities, and invites us to look at the world through a different, not local awareness.

physics.gen-ph↗