Environment-Assisted Shortcuts to Adiabaticity |
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Authors: | Akram Touil Sebastian Deffner |
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Institution: | 1.Department of Physics, University of Maryland, Baltimore County, Baltimore, MD 21250, USA;2.Instituto de Física ‘Gleb Wataghin’, Universidade Estadual de Campinas, Campinas, São Paulo 13083-859, Brazil |
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Abstract: | Envariance is a symmetry exhibited by correlated quantum systems. Inspired by this “quantum fact of life,” we propose a novel method for shortcuts to adiabaticity, which enables the system to evolve through the adiabatic manifold at all times, solely by controlling the environment. As the main results, we construct the unique form of the driving on the environment that enables such dynamics, for a family of composite states of arbitrary dimension. We compare the cost of this environment-assisted technique with that of counterdiabatic driving, and we illustrate our results for a two-qubit model. |
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Keywords: | shortcuts to adiabaticity counterdiabatic driving envariance branching states |
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