Abstract
We study the possibility of using dark solitons in quasi-one-dimensional Bose-Einstein condensates to produce two-level systems (qubits) by exploiting the intrinsic nonlinear and coherent nature of the matter waves. We calculate the soliton spectrum and the conditions for a qubit to exist. We also compute the coupling between the phonons and the solitons and investigate the emission rate of the qubit in that case. Remarkably, the qubit lifetime is estimated to be of the order of a few seconds, being only limited by the dark-soliton “death” due to quantum evaporation.
- Received 26 January 2017
DOI:https://doi.org/10.1103/PhysRevA.95.053618
©2017 American Physical Society
Physics Subject Headings (PhySH)
Synopsis
A Dark Side for Qubits
Published 18 May 2017
Dark solitons in a Bose-Einstein condensate could, according to calculations, function as qubits with long lifetimes.
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