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Charge Qubits from Quantum Fluctuation Theory

Speaker: 
Fabio Benatti
Institution: 
Università di Trieste
Schedule: 
Thursday, April 27, 2023 - 11:00 to 13:00
Location: 
A-134
Abstract: 

Charge qubits are circuits consisting of a capacitance and a Josephson junction.Though macroscopic, they are phenomenologically described by a quantized Hamiltonian.By using the quasi-spin formulation of the BCS theory in the singular coupling limit, it is shown that the phenomenological Hamiltonian can be derived by means of a particular asymmetric realization of the theory of quantum fluctuations and of the quantum central limit theorem.  

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