Quantum-enhanced protocols with mixed states using cold atoms in dipole traps

Krzyzanowska, K; Copley-May, M; Romain, R; MacCormick, C and Bergamini, S (2017). Quantum-enhanced protocols with mixed states using cold atoms in dipole traps. Journal of Physics: Conference Series, 793(1), article no. 012015.

DOI: https://doi.org/10.1088/1742-6596/793/1/012015

Abstract

We discuss the use of cold atoms in dipole traps to demonstrate experimentally a particular class of protocols for computation and metrology based on mixed states. Modelling of the system shows that, for a specific class of problems (tracing, phase estimation), a quantum advantage can be achieved over classical algorithms for very realistic conditions and strong decoherence. We discuss the results of the models and the experimental implementation.

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