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Coherence trapping and information back-flow in dephasing qubits | | Carole Addis
; Gregoire Brebner
; Pinja Haikka
; Sabrina Maniscalco
; | | Date: |
4 Nov 2013 | | Abstract: | We study the interplay between coherence trapping, information back-flow and
the form of the reservoir spectral density for dephasing qubits. We show that
stationary coherence is maximized when the qubit undergoes non-Markovian
dynamics, and we elucidate the different roles played by the low and high
frequency parts of the environmental spectrum. We show that the low frequencies
fully determine the presence or absence of information back-flow while the high
frequencies dictate the maximal amount of coherence trapping. | | Source: | arXiv, 1311.0699 | | Services: | Forum | Review | PDF | Favorites | |
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