Ultrafast coherent excitation of an ytterbium ion with single laser pulses

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Shimizu, Kenji
Scarabel, Jordan
Bridge, Elizabeth
Connell, Steven
Ghadimi, Moji
Haylock, Ben
Hussain, Mahmood Irtiza
Streed, Erik
Lobino, Mirko
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2021
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Abstract

Experimental realizations of two qubit entangling gates with trapped ions typically rely on addressing spectroscopically resolved motional sidebands, limiting gate speed to the secular frequency. Fast entangling gates using ultrafast pulsed lasers overcome this speed limit. This approach is based on state-dependent photon recoil kicks from a sequence of counter-propagating, resonant, ultrafast pulse pairs, which can allow sub-microsecond gate speeds. Here, we demonstrate a key component of the ultrafast gate protocol, the coherent excitation of a 171Yb+ ion across the 2S1∕2-2P1∕2 transition with a single near-resonant short optical pulse at 369.53 nm. We achieve a maximum population transfer of 94(1)% using a picosecond pulsed laser that can be tuned across the 2S1∕2-2P1∕2 transition and 42.5(9)% with 190(7) GHz detuning.

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Applied Physics Letters

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119

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21

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© 2021 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in 2021, 119 (21), pp. 214003 and may be found at https://doi.org/10.1063/5.0073136

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Physical sciences

Nanotechnology

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Shimizu, K; Scarabel, J; Bridge, E; Connell, S; Ghadimi, M; Haylock, B; Hussain, MI; Streed, E; Lobino, M, Ultrafast coherent excitation of an ytterbium ion with single laser pulses, Applied Physics Letters, 2021, 119 (21), pp. 214003

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