Time as an illusion created by entanglement in Physical Review A featured in WIRED

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ISC researchers Alessandro Coppo and Paola Verrucchi, in collaboration with Prof. A. Cuccoli from the University of Florence, have published an intriguing study in Physical Review A. The work has garnered attention from prominent publications such as New Scientist and Wired.

They consider  a simple and physically relevant example  where the time evolution of a system can  be determined by the entanglement with its clock.… Read the rest

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Optimal Quantum Key Distribution Networks in npj Quantum information

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ISC researchers C. Castellano, V.Brosco and L. Pilozzi coauthored an interesting work published in npj quantum information.

Optimal quantum key distribution networks: capacitance versus security

L. Cirigliano, V.Brosco, C. Castellano, C. Conti, L. Pilozzi,  npj Quantum Information 10, 44 (2024)

Abstract

The rate and security of quantum communications between users placed at arbitrary points of a quantum communication network depend on the structure of the network, on its extension and on the nature of the communication channels.

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Superconducting Qubit Based on Twisted Cuprate Van der Waals Heterostructures in Physical Review Letters

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ISC researcher Valentina Brosco coauthored an interesting research proposing a novel superconduting qubit desigm. The work has been selected for an Editor’s Suggestion in Physical Review Letters, see Superconducting Qubit Based on Twisted Cuprate Van der Waals Heterostructures V. Brosco, G. Serpico, V. Vinokur, N. Poccia and U. Vool, Phys. Rev. Lett. 132, 017003 (2024).

Abstract

Van-der-Waals assembly enables the fabrication of novel Josephson junctions featuring an atomically sharp interface between two exfoliated and relatively twisted Bi2Sr2CaCu2O8+x (Bi2212) flakes.

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2D High-Temperature Superconductor Integration in Contact Printed Circuit Boards in ACS Applied Materials and Interfaces

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ISC researcher Valentina Brosco coauthored an interesting research article published in ACS Applied Materials and Interfaces, C. Saggau et al.,  2D High-Temperature integration in Contact Printed Circuit Boards, ACS Appl. Mater. Interfaces 44, 51558 (2023).  The work paves the way to the realization of novel  printed circuits and devices integrating atomically thin high-Tc superconducting  films.

2D High-Temperature Superconductor Integration in Contact Printed Circuit Boards

Inherent properties of superconducting Bi2Sr2CaCu2O8+x films, such as the high superconducting transition temperature Tc, efficient Josephson coupling between neighboring CuO layers, and fast quasiparticle relaxation dynamics, make them a promising platform for advances in quantum computing and communication technologies.

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Waveguide QED with Quadratic Light-Matter Interactions – PRX Quantum

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ISC researcher S. Felicetti is the lead author of a research article now published in PRX Quantum, in collaboration with Aalto University (Helsinki) and the Institute of Fundamental Physics IFF-CSIC (Madrid): U. Alushi, T. Ramos, J.-J. G.-Ripoll, R. Di Candia, and S. Felicetti PRX Quantum 4, 030326 (2023).

Quadratic light-matter interactions are nonlinear couplings such that quantum emitters interact with photonic or phononic modes exclusively via the exchange of excitation pairs.… Read the rest

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How to build a quantum Newton’s cradle

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A quantum analogue of the popular “Newton’s cradle” toy has been proposed by a duo of physicists in Italy. Like momentum transferred in the toy, the team argues that it should be possible to achieve the nearly perfect transmission of a quantum wavefunction along a line of ultracold atoms in a 1D Bose–Einstein condensate. According to the pair, the work could help develop quantum-information systems that achieve high-quality wave transmission […]

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Newton cradle

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Newton’s cradle (Fig. 1) is a valuable paradigm of how physical mechanisms are concealed into nature. It is a device based on classical mechanics that demonstrates the conservation of momentum and energy. On the other hand, Quantum Mechanics has been shown to be one of most prolific sources of unexpected and hard-to-understand phenomena. Therefore, achieving a machine which is a paradigm for the quantum nature of a system is an engrossing challenge.… Read the rest

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