Journal
SCIENTIFIC REPORTS
Volume 12, Issue 1, Pages -Publisher
NATURE PORTFOLIO
DOI: 10.1038/s41598-022-14277-9
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- National Tsing-Hua University
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In this study, we used a normal mode approach to investigate the full and partial state transfer in a class of coupled resonator networks. Our results provide an analytical expression for the time evolution and quantum transfer time of the system. This study offers valuable insights into the quantum state reconstruction and transfer.
We use a normal mode approach to show full and partial state transfer in a class of coupled resonator networks with underlying su(2) symmetry that includes the so-called J(x) photonic lattice. Our approach defines an auxiliary Hermitian coupling matrix describing the network that yields the normal modes of the system and its time evolution in terms of orthogonal polynomials. Our results provide insight on the full quantum state reconstruction time in a general su(2) network of any size and the full quantum transfer time in the J(x) network of size 4n + 1 with n = 1, 2,3,... For any other network sizes, the Fock state probability distribution of the initial state is conserved but the amplitudes suffer a phase shift proportional to pi/2 that results in partial quantum state transfer.
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