| Paper Abstract and Keywords |
| Presentation |
2023-12-17 17:30
[Poster Presentation]
Calculation of imaginary time evolution
Hiroki Kuji, Yuta Shingu, Tetsuro Nikuni (TUS), Yuichiro Matsuzaki (Chuo Univ.) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
Many methods have been proposed to compute the imaginary-time evolution with high accuracy using a fault-tolerant quantum computer. Among them, a method to calculate imaginary-time evolution by complex integration of real-time evolution has recently been proposed. On the other hand, an imaginary-time evolution algorithm using a variational quantum circuit with a noisy intermediate-scale quantum (NISQ) computer has also been proposed. However, it is difficult to achieve high accuracy in the conventional NISQ algorithm because its performance strongly depends on the ansatz quantum circuit.
In this presentation, we propose a new method for computing imaginary-time evolution using a quantum simulator.
A quantum simulator is a device that implements only the natural time evolution of the Hamiltonian due to two-body interactions and local magnetic fields, and a single qubit operation.
Compared to fault-tolerant quantum computers, which require a large number of high-precision gate operations on a large number of qubits, the experimental hurdles required are lower.
In addition, this method does not use a variational method, but rather a method of converting the time evolution into imaginary-time evolution through complex integration, which can achieve high accuracy. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Quantum Computation / Imaginary Time Evolution / Quantum Simulation / / / / / |
| Reference Info. |
IEICE Tech. Rep. |
| Paper # |
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| Conference Information |
| Committee |
QIT |
| Conference Date |
2023-12-17 - 2023-12-19 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
OIST |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
Quantum Information |
| Paper Information |
| Registration To |
QIT |
| Conference Code |
2023-12-QIT |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Calculation of imaginary time evolution |
| Sub Title (in English) |
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| Keyword(1) |
Quantum Computation |
| Keyword(2) |
Imaginary Time Evolution |
| Keyword(3) |
Quantum Simulation |
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| 1st Author's Name |
Hiroki Kuji |
| 1st Author's Affiliation |
Tokyo University of science (TUS) |
| 2nd Author's Name |
Yuta Shingu |
| 2nd Author's Affiliation |
Tokyo University of science (TUS) |
| 3rd Author's Name |
Tetsuro Nikuni |
| 3rd Author's Affiliation |
Tokyo University of science (TUS) |
| 4th Author's Name |
Yuichiro Matsuzaki |
| 4th Author's Affiliation |
Chuo University (Chuo Univ.) |
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| Speaker |
Author-1 |
| Date Time |
2023-12-17 17:30:00 |
| Presentation Time |
120 minutes |
| Registration for |
QIT |
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