Ukrainian Journal of Physical Optics 

Volume 22, Issue 4, 2021

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Implementation of optical quantum gate for polarization-encoded qubits via acousto-optic diffraction by shear acoustic waves in vitreous media

Krupych O., Martynyuk-Lototska I., Orykhivskyi I., Adamenko D., Kostyrko M. and Vlokh R.

O. G. Vlokh Institute of Physical Optics, 23 Dragomanov Street, 79005 Lviv, Ukraine, vlokh@ifo.lviv.ua 
 

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Abstract. We demonstrate experimentally that acousto-optic diffraction by a shear acoustic wave propagating in fused silica can transform linear or circular polarization states into their orthogonal counterparts. It is also shown that a corresponding acousto-optic cell with a shear acoustic wave propagating in a vitreous medium can be used as a NOT or CNOT gate. The advantage of our method is a possibility for spatial manipulation by qubits via acousto-optic diffraction under condition of changing frequency of the acoustic wave.

Keywords: quantum gates, NOT gates, CNOT gates, acousto-optics, fused silica 

UDC: 535.4+534-8+004.04
Ukr. J. Phys. Opt. 22 198-208
doi: 10.3116/16091833/22/4/198/2021
Received: 09.09.2021

Анотація. Експериментально продемонстровано, що акустооптична дифракція на зсувній акустичній хвилі, яка поширюється в плавленому кварці, може перетворити лінійні або кругові поляризаційні стани на їхні ортогональні аналоги. Також показано, що відповідну акустооптичну комірку на зсувній акустичній хвилі, яка поширюється у склоподібному середовищі, можна використовувати як квантові вентилі NOT або CNOT. Перевагою нашого методу є можливість просторового керування кубітами за допомогою акустооптичної дифракції за умови зміни частоти акустичної хвилі.

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