Quantum sensing with topological-paired bound states
We present an efficient and robust protocol for quantum-enhanced sensing using a single qubit in the topological waveguide system. Our method relies on the topological-paired bound states, which are localized near the qubit and can be effectively regarded as a two-level system. Through the lens of B...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2025-01-01
|
| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/add8b0 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850153642971103232 |
|---|---|
| author | Tao Zhang Peng Xu Jiazhong Hu Xingze Qiu |
| author_facet | Tao Zhang Peng Xu Jiazhong Hu Xingze Qiu |
| author_sort | Tao Zhang |
| collection | DOAJ |
| description | We present an efficient and robust protocol for quantum-enhanced sensing using a single qubit in the topological waveguide system. Our method relies on the topological-paired bound states, which are localized near the qubit and can be effectively regarded as a two-level system. Through the lens of Bayesian inference theory, we show that the sensitivity can reach the Heisenberg limit across a large field range. Inheriting from the topological robustness of the waveguide, our sensing protocol is robust against local perturbations. Besides, our sensing protocol utilizes a product state as the initial state, which can be easily prepared in experiments. We expect this approach would pave the way toward robust topological quantum sensors based on near-term quantum platforms such as superconducting qubits and Rydberg arrays. |
| format | Article |
| id | doaj-art-4209673903294bbabb06e3864c69dfc5 |
| institution | OA Journals |
| issn | 1367-2630 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj-art-4209673903294bbabb06e3864c69dfc52025-08-20T02:25:40ZengIOP PublishingNew Journal of Physics1367-26302025-01-0127505450910.1088/1367-2630/add8b0Quantum sensing with topological-paired bound statesTao Zhang0https://orcid.org/0009-0005-5804-7586Peng Xu1https://orcid.org/0000-0002-3047-7841Jiazhong Hu2https://orcid.org/0000-0002-2937-4810Xingze Qiu3https://orcid.org/0000-0003-2269-9249Department of Physics and State Key Laboratory of Low Dimensional Quantum Physics, Tsinghua University , Beijing 100084, People’s Republic of ChinaSchool of Physics, Zhengzhou University , Zhengzhou 450001, People’s Republic of China; Institute of Quantum Materials and Physics, Henan Academy of Sciences , Zhengzhou 450046, People’s Republic of ChinaBeijing Academy of Quantum Information Sciences , Beijing 100193, People’s Republic of ChinaSchool of Physics Science and Engineering, Tongji University , Shanghai 200092, People’s Republic of ChinaWe present an efficient and robust protocol for quantum-enhanced sensing using a single qubit in the topological waveguide system. Our method relies on the topological-paired bound states, which are localized near the qubit and can be effectively regarded as a two-level system. Through the lens of Bayesian inference theory, we show that the sensitivity can reach the Heisenberg limit across a large field range. Inheriting from the topological robustness of the waveguide, our sensing protocol is robust against local perturbations. Besides, our sensing protocol utilizes a product state as the initial state, which can be easily prepared in experiments. We expect this approach would pave the way toward robust topological quantum sensors based on near-term quantum platforms such as superconducting qubits and Rydberg arrays.https://doi.org/10.1088/1367-2630/add8b0quantum sensingHeisenberg limitbound statestopological waveguide |
| spellingShingle | Tao Zhang Peng Xu Jiazhong Hu Xingze Qiu Quantum sensing with topological-paired bound states New Journal of Physics quantum sensing Heisenberg limit bound states topological waveguide |
| title | Quantum sensing with topological-paired bound states |
| title_full | Quantum sensing with topological-paired bound states |
| title_fullStr | Quantum sensing with topological-paired bound states |
| title_full_unstemmed | Quantum sensing with topological-paired bound states |
| title_short | Quantum sensing with topological-paired bound states |
| title_sort | quantum sensing with topological paired bound states |
| topic | quantum sensing Heisenberg limit bound states topological waveguide |
| url | https://doi.org/10.1088/1367-2630/add8b0 |
| work_keys_str_mv | AT taozhang quantumsensingwithtopologicalpairedboundstates AT pengxu quantumsensingwithtopologicalpairedboundstates AT jiazhonghu quantumsensingwithtopologicalpairedboundstates AT xingzeqiu quantumsensingwithtopologicalpairedboundstates |