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- National University of Science and TechnologyRU181 papers
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728 papers
Influence of fast and slow laser phase noise on the fidelity of the Mølmer-Sørensen trapped-ion gate
Nikita Semenin, Ksenia Khabarova, Nikolay Kolachevsky
High-fidelity two-qubit entangling gates are essential for the realization of useful quantum algorithms on quantum processors. The Mølmer-Sørensen (MS) gate has become a common cho…
Control of eigenmode localization and coupling anisotropy by multiscan femtosecond laser writing
S. A. Zhuravitskii, N. S. Kostyuchenko, N. N. Skryabin +5
The multiscan method is widely used in femtosecond laser writing of waveguide systems to increase the refractive index contrast and to control the eigenmode shape. Here, we investi…
Implementation of two-qubit Rydberg operations on neutral Rb-87 atoms in systems with different intermediate states
I. V. Iukhnovets, O. V. Bychkova, I. B. Bobrov +4
This work presents an experimental setup for implementing two-qubit operations on neutral atoms (Rb) with the possibility of using two different Rydberg excitation schemes.…
Perturbative photonic matrix-vector multiplication with reduced phase-shift range
S. A. Fldzhyan, S. S. Straupe, M. Yu. Saygin
Programmable photonic meshes provide a promising platform for analog matrix-vector multiplication, but their scalability is often limited by the large phase-shift ranges required i…
Addressable Rydberg excitation in arrays of single neutral atoms with a strongly focused flat-top beam
I. V. Iukhnovets, M. Y. Goloshchapov, A. P. Gordeev +4
We present a method for generating a laser beam with flat intensity and phase profiles in the focal region where the beam interacts with neutral Rb atoms in an array of opti…
Lemniscate phase trajectories for high-fidelity GHZ state preparation in trapped-ion chains
Evgeny V. Anikin, Andrey Chuchalin, Dimitrii Donchenko +2
In trapped-ion chains, multipartite GHZ states can be prepared natively with the help of a single bichromatic laser pulse. However, higher-order terms in the expansion in the Lamb-…