Generalized Toric Codes on Twisted Tori for Quantum Error Correction
The Kitaev toric code is widely considered one of the leading candidates for error correction in fault-tolerant quantum computation. However, direct methods to increase its logical dimensions, such as lattice surgery or introducing punctures, often incur prohibitive overheads. In this work, we intro...
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American Physical Society
2025-06-01
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| Series: | PRX Quantum |
| Online Access: | http://doi.org/10.1103/rmy6-9n89 |
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| author | Zijian Liang Ke Liu Hao Song Yu-An Chen |
| author_facet | Zijian Liang Ke Liu Hao Song Yu-An Chen |
| author_sort | Zijian Liang |
| collection | DOAJ |
| description | The Kitaev toric code is widely considered one of the leading candidates for error correction in fault-tolerant quantum computation. However, direct methods to increase its logical dimensions, such as lattice surgery or introducing punctures, often incur prohibitive overheads. In this work, we introduce a ring-theoretic approach for efficiently analyzing topological CSS codes in two dimensions, enabling the exploration of generalized toric codes with larger logical dimensions on twisted tori. Using Gröbner bases, we simplify stabilizer syndromes to efficiently identify anyon excitations and their geometric periodicities, even under twisted periodic boundary conditions. Since the properties of the codes are determined by the anyons, this approach allows us to directly compute the logical dimensions without constructing large parity-check matrices. Our approach provides a unified method for finding new quantum error-correcting codes and exhibiting their underlying topological orders via the Laurent polynomial ring. This framework naturally applies to bivariate bicycle codes. For example, we construct optimal weight-6 generalized toric codes on twisted tori with parameters [[n,k,d]] for n≤400, yielding novel codes such as [[120,8,12]], [[186,10,14]], [[210,10,16]], [[248,10,18]], [[254,14,16]], [[294,10,20]], [[310,10,≤22]], and [[340,16,18]]. Moreover, we present a new realization of the [[360,12,≤24]] quantum code using the (3,3)-bivariate bicycle code on a twisted torus defined by the basis vectors (0,30) and (6,6), improving stabilizer locality relative to the previous construction. These results highlight the power of the topological order perspective in advancing the design and theoretical understanding of quantum low-density parity-check (LDPC) codes. |
| format | Article |
| id | doaj-art-5543da458c074ca0bf086dfbbae4728e |
| institution | DOAJ |
| issn | 2691-3399 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | American Physical Society |
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| series | PRX Quantum |
| spelling | doaj-art-5543da458c074ca0bf086dfbbae4728e2025-08-20T03:23:52ZengAmerican Physical SocietyPRX Quantum2691-33992025-06-016202035710.1103/rmy6-9n89Generalized Toric Codes on Twisted Tori for Quantum Error CorrectionZijian LiangKe LiuHao SongYu-An ChenThe Kitaev toric code is widely considered one of the leading candidates for error correction in fault-tolerant quantum computation. However, direct methods to increase its logical dimensions, such as lattice surgery or introducing punctures, often incur prohibitive overheads. In this work, we introduce a ring-theoretic approach for efficiently analyzing topological CSS codes in two dimensions, enabling the exploration of generalized toric codes with larger logical dimensions on twisted tori. Using Gröbner bases, we simplify stabilizer syndromes to efficiently identify anyon excitations and their geometric periodicities, even under twisted periodic boundary conditions. Since the properties of the codes are determined by the anyons, this approach allows us to directly compute the logical dimensions without constructing large parity-check matrices. Our approach provides a unified method for finding new quantum error-correcting codes and exhibiting their underlying topological orders via the Laurent polynomial ring. This framework naturally applies to bivariate bicycle codes. For example, we construct optimal weight-6 generalized toric codes on twisted tori with parameters [[n,k,d]] for n≤400, yielding novel codes such as [[120,8,12]], [[186,10,14]], [[210,10,16]], [[248,10,18]], [[254,14,16]], [[294,10,20]], [[310,10,≤22]], and [[340,16,18]]. Moreover, we present a new realization of the [[360,12,≤24]] quantum code using the (3,3)-bivariate bicycle code on a twisted torus defined by the basis vectors (0,30) and (6,6), improving stabilizer locality relative to the previous construction. These results highlight the power of the topological order perspective in advancing the design and theoretical understanding of quantum low-density parity-check (LDPC) codes.http://doi.org/10.1103/rmy6-9n89 |
| spellingShingle | Zijian Liang Ke Liu Hao Song Yu-An Chen Generalized Toric Codes on Twisted Tori for Quantum Error Correction PRX Quantum |
| title | Generalized Toric Codes on Twisted Tori for Quantum Error Correction |
| title_full | Generalized Toric Codes on Twisted Tori for Quantum Error Correction |
| title_fullStr | Generalized Toric Codes on Twisted Tori for Quantum Error Correction |
| title_full_unstemmed | Generalized Toric Codes on Twisted Tori for Quantum Error Correction |
| title_short | Generalized Toric Codes on Twisted Tori for Quantum Error Correction |
| title_sort | generalized toric codes on twisted tori for quantum error correction |
| url | http://doi.org/10.1103/rmy6-9n89 |
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