| Paper Abstract and Keywords |
| Presentation |
2022-05-31 11:50
Passive verification protocol for thermal graph states
Kazuki Akimoto, Shunji Tsuchiya (Chuo Univ.), Ryosuke Yoshii (Sanyo-Onoda City Univ.), Yuki Takeuchi (NTT) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
Graph states are entangled resource states for universal measurement-based quantum computation.
Although matter qubits such as superconducting circuits and trapped ions are promising candidates to generate graph states, it is technologically hard to entangle a large number of them due to several types of noise.
Since they must be sufficiently cooled to maintain their quantum properties, thermal noise is one of major ones.
In this paper, we show that for any temperature $T$, the fidelity $¥langle G|¥rho_T|G¥rangle$ between an ideal graph state $|G¥rangle$ at zero temperature and a thermal graph state $¥rho_T$, which is a graph state at temperature $T$, can be efficiently estimated by using only one measurement setting.
A remarkable property of our protocol is that it is passive, while existing protocols are active, namely they switch between at least two measurement settings.
Since thermal noise is equivalent to an independent phase-flip error, our estimation protocol also works for that error.
By generalizing our protocol to hypergraph states, we apply our protocol to the quantum-computational-supremacy demonstration with instantaneous quantum polynomial time circuits. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
graph states / thermal noise / quantum state verification / / / / / |
| Reference Info. |
IEICE Tech. Rep. |
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| Conference Information |
| Committee |
QIT |
| Conference Date |
2022-05-30 - 2022-05-31 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Online |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
Quantum Information |
| Paper Information |
| Registration To |
QIT |
| Conference Code |
2022-05-QIT |
| Language |
English (Japanese title is available) |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Passive verification protocol for thermal graph states |
| Sub Title (in English) |
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| Keyword(1) |
graph states |
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thermal noise |
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quantum state verification |
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| 1st Author's Name |
Kazuki Akimoto |
| 1st Author's Affiliation |
Chuo University (Chuo Univ.) |
| 2nd Author's Name |
Shunji Tsuchiya |
| 2nd Author's Affiliation |
Chuo University (Chuo Univ.) |
| 3rd Author's Name |
Ryosuke Yoshii |
| 3rd Author's Affiliation |
Sanyo-Onoda City University (Sanyo-Onoda City Univ.) |
| 4th Author's Name |
Yuki Takeuchi |
| 4th Author's Affiliation |
Nippon Telegraph and Telephone Corporation (NTT) |
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| Speaker |
Author-4 |
| Date Time |
2022-05-31 11:50:00 |
| Presentation Time |
20 minutes |
| Registration for |
QIT |
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