Quantum manipulation of a two-level mechanical system
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Quantum manipulation of a two-level mechanical system. / Chiavazzo, Salvatore; Sørensen, Anders S.; Kyriienko, Oleksandr; Dellantonio, Luca.
In: Quantum, Vol. 7, 943, 2023.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Quantum manipulation of a two-level mechanical system
AU - Chiavazzo, Salvatore
AU - Sørensen, Anders S.
AU - Kyriienko, Oleksandr
AU - Dellantonio, Luca
N1 - Publisher Copyright: © 2023 Bogazici Universitesi. All rights reserved.
PY - 2023
Y1 - 2023
N2 - We consider a nonlinearly coupled electromechanical system, and develop a quantitative theory for two-phonon cooling. In the presence of two-phonon cooling, the mechanical Hilbert space is effectively reduced to its ground and first excited states, allowing for quantum operations at the level of individual phonons and preparing nonclassical mechanical states with negative Wigner functions. We propose a scheme for performing arbitrary Bloch sphere rotations, and derive the fidelity in the specific case of a π-pulse. We characterise detrimental processes that reduce the coherence in the system, and demonstrate that our scheme can be implemented in state-of-the-art electromechanical devices.
AB - We consider a nonlinearly coupled electromechanical system, and develop a quantitative theory for two-phonon cooling. In the presence of two-phonon cooling, the mechanical Hilbert space is effectively reduced to its ground and first excited states, allowing for quantum operations at the level of individual phonons and preparing nonclassical mechanical states with negative Wigner functions. We propose a scheme for performing arbitrary Bloch sphere rotations, and derive the fidelity in the specific case of a π-pulse. We characterise detrimental processes that reduce the coherence in the system, and demonstrate that our scheme can be implemented in state-of-the-art electromechanical devices.
U2 - 10.22331/q-2023-03-09-943
DO - 10.22331/q-2023-03-09-943
M3 - Journal article
AN - SCOPUS:85151008332
VL - 7
JO - Quantum
JF - Quantum
SN - 2521-327X
M1 - 943
ER -
ID: 372967314