|
| | | | |
| | | |
| Stat |
Members: 3665
Articles: 2'599'751
Articles rated: 2609
25 January 2025 |
|
| | | | |
|
Article overview
| |
|
|
Noise-resistant quantum memory enabled by Hamiltonian engineering | | Lei Jing
; Peng Du
; Hui Tang
; Wenxian Zhang
; | | Date: |
2 Jan 2023 | | Abstract: | Nuclear spins in quantum dots are promising candidates for fast and scalable
quantum memory. By utilizing the hyperfine interaction between the central
electron and its surrounding nuclei, quantum information can be transferred to
the collective state of the nuclei and be stored for a long time. However,
nuclear spin fluctuations in a partially polarized nuclear bath deteriorate the
quantum memory fidelity. Here we introduce a noise-resistant protocol to
realize fast and high-fidelity quantum memory through Hamiltonian engineering.
With analytics and numerics, we show that high-fidelity quantum state transfer
between the electron and the nuclear spins is achievable at relatively low
nuclear polarizations, due to the strong suppression of nuclear spin noises.
For a realistic quantum dot with $10^4$ nuclear spins, a fidelity surpassing
80% is possible at a polarization as low as 30%. Our approach reduces the
demand for high nuclear polarization, making experimentally realizing quantum
memory in quantum dots more feasible. | | Source: | arXiv, 2301.00575 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
|
| |
|
|
|
REGISTER