Non-Ideal X-Gate and Z-Gate in Semiconducting Spin Qubit Implementations †
Abstract
:1. Introduction
2. Results
2.1. Quantum Dot and Donor Spin Qubits Effective Hamiltonian Models
- SQ: is the Zeeman frequency associated to the DC applied magnetic field, is the angular frequency of the AC local magnetic field and is the angular frequency that depends on the amplitude of that field.
- STQ: is the magnetic field gradient between the QDs and J is the exchange coupling between the two spins.
- HQ: is the Zeeman energy associated to the constant applied magnetic field and are the exchange couplings among couple of spins.
- DQ: the same as for the SQ, where is the analogous of and is equal to , with and . The parameters and are respectively the electron and nuclear gyromagnetic ratio, is the external DC magnetic field and A is the hyperfine coupling. The donor nuclear spin is supposed equal to .
- SDQ: J is the exchange coupling between the electron spins of the donor and of the dot, A is the hyperfine coupling between the electron spin and the nuclear spin of the donor and is the applied DC magnetic field. The donor nuclear spin is supposed equal to .
2.2. Comparison of Gate Fidelities among Qubit Types
3. Discussion
Author Contributions
Acknowledgments
Conflicts of Interest
References
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Qubit | {, } | |||
---|---|---|---|---|
SQ (rot. frame) | 0 | |||
STQ | ||||
HQ | ||||
DQ (rot. frame) | 0 | |||
SDQ |
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Ferraro, E.; Fanciulli, M.; Michielis, M.D. Non-Ideal X-Gate and Z-Gate in Semiconducting Spin Qubit Implementations. Proceedings 2019, 12, 53. https://doi.org/10.3390/proceedings2019012053
Ferraro E, Fanciulli M, Michielis MD. Non-Ideal X-Gate and Z-Gate in Semiconducting Spin Qubit Implementations. Proceedings. 2019; 12(1):53. https://doi.org/10.3390/proceedings2019012053
Chicago/Turabian StyleFerraro, Elena, Marco Fanciulli, and Marco De Michielis. 2019. "Non-Ideal X-Gate and Z-Gate in Semiconducting Spin Qubit Implementations" Proceedings 12, no. 1: 53. https://doi.org/10.3390/proceedings2019012053