2014/11/27 by Ali Izadi Rad, Rad, Ali Izadi, Hesam Zandi +3
Computer Science · Physics and Astronomy · #FOS: Physical sciences #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Physics (quant-ph) #Quantum many-body systems #Superconductivity (cond-mat.supr-con) #cond-mat.supr-con #quant-ph
paper · pdf · doi:10.48550/arxiv.1411.7454
Submitted to Physical Review B. arXiv admin note: substantial text overlap with arXiv:1403.5762
arxiv created 2014/11/27 · openalex publication_date 2014/11/27 · arxiv updated 2014/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
New procedure on precise analysis of superconducting phase qubits using the concept of Feynman path integral in quantum mechanics and quantum field theory has been introduced. The wave function and imaginary part of the energy of the pseudo ground state of the Hamiltonian in phase qubits has been obtained from semi classical approximation and we we estimate decay rate, and thus the life time of meta stable using the approach of Instanton model. We devote the main effort to study the evolution of spectrum of Hamiltonian in time after addition of interaction Hamiltonian, in order to obtain the high fidelity quantum gates.