Quantum optimal control of the dissipative production of a maximally entangled state

Horn KP, Reiter F, Lin Y, Leibfried D, Koch CP (2018)

Publication Type: Journal article

Publication year: 2018

Journal

New Journal of Physics Institute of Physics: Open Access Journals / Institute of Physics (IoP) and Deutsche Physikalische Gesellschaft

Book Volume: 20

Article Number: 123010

Journal Issue: 12

DOI: 10.1088/1367-2630/aaf360

Abstract

Entanglement generation can be robust against certain types of noise in approaches that deliberately incorporate dissipation into the system dynamics. The presence of additional dissipation channels may, however, limit fidelity and speed of the process. Here we show how quantum optimal control techniques can be used to both speed up the entanglement generation and increase the fidelity in a realistic setup, whilst respecting typical experimental limitations. For the example of entangling two trapped ion qubits (Lin et al 2013 Nature 504 415), we find an improved fidelity by simply optimizing the polarization of the laser beams utilized in the experiment. More significantly, an alternate combination of transitions between internal states of the ions, when combined with optimized polarization, enables faster entanglement and decreases the error by an order of magnitude.

Involved external institutions

Universität Kassel DE Germany (DE) Harvard University US United States (USA) (US) University of Science and Technology of China (USTC) CN China (CN) National Institute of Standards and Technology (NIST) US United States (USA) (US)

How to cite

APA:

Horn, K.P., Reiter, F., Lin, Y., Leibfried, D., & Koch, C.P. (2018). Quantum optimal control of the dissipative production of a maximally entangled state. New Journal of Physics, 20(12). https://doi.org/10.1088/1367-2630/aaf360

MLA:

Horn, Karl P., et al. "Quantum optimal control of the dissipative production of a maximally entangled state." New Journal of Physics 20.12 (2018).

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