146 citations · 436 across the 13 of their papers we have counts for
13 papers
Damping-dependent thermalization of neighboring nanomechanical resonators below 1 mK
Amir Youssefi, Mahdi Chegnizadeh, Francis Bettsworth +4
The position noise spectra of six drums on a single chip were measured on a single cooldown below 1.3 kelvin. Cryostat temperatures as low as 0.7 mK were achieved. The temperature…
Nonclassical microwave radiation from the parametric dynamical Casimir effect in the reversed-dissipation regime of circuit optomechanics
H. Solki, Ali Motazedifard, M. H. Naderi +2
We propose an experimentally feasible optomechanical system (OMS) that is dispersively driven and operates in the reversed dissipation regime (RDR), where the mechanical damping ra…
Realization of tilted Dirac-like microwave cone in superconducting circuit lattices
Amir Youssefi, Ahmad Motavassal, Shingo Kono +2
Dirac-like band crossings are paradigms in condensed matter systems to emulate high-energy physics phenomena. They are associated with two aspects: gap and tilting. The ability to…
Compact superconducting vacuum-gap capacitors with low microwave loss and high mechanical coherence for scalable quantum circuits
Amir Youssefi, Mahdi Chegnizadeh, Marco Scigliuzzo +1
Vacuum-gap capacitors have recently attracted significant interest in superconducting circuit platforms due to their compact design and exceptionally low dielectric losses in the m…
Quantum collective motion of macroscopic mechanical oscillators
Mahdi Chegnizadeh, Marco Scigliuzzo, Amir Youssefi +3
Collective phenomena arise from interactions within complex systems, leading to behaviors absent in individual components. Observing quantum collective phenomena with macroscopic m…
Polaris: A Safety-focused LLM Constellation Architecture for Healthcare
Subhabrata Mukherjee, Paul Gamble, Markel Sanz Ausin +23
We develop Polaris, the first safety-focused LLM constellation for real-time patient-AI healthcare conversations. Unlike prior LLM works in healthcare focusing on tasks like questi…