Published January 31, 2012 | Version Submitted
Discussion Paper Open

3D local qupit quantum code without string logical operator

Creators

Abstract

Recently Haah introduced a new quantum error correcting code embedded on a cubic lattice. One of the defining properties of this code is the absence of string logical operator. We present new codes with similar properties by relaxing the condition on the local particle dimension. The resulting code is well-defined when the local Hilbert space dimension is prime. These codes can be divided into two different classes: the local stabilizer generators are either symmetric or antisymmetric with respect to the inversion operation. These is a nontrivial correspondence between these two classes. For any symmetric code without string logical operator, there exists a complementary antisymmetric code with the same property and vice versa. We derive a sufficient condition for the absence of string logical operator in terms of the algebraic constraints on the defining parameters of the code. Minimal number of local particle dimension which satisfies the condition is 5. These codes have logarithmic energy barrier for any logical error.

Additional Information

This research was supported in part by NSF under Grant No. PHY-0803371, by ARO Grant No. W911NF-09-1-0442, and DOE Grant No. DE-FG03-92-ER40701. Author would like to thank Steven Flammia, Jeongwan Haah, Robert Koenig, and John Preskill for useful dis- cussions.

Attached Files

Submitted - 1202.0052v1.pdf

Files

1202.0052v1.pdf

Files (198.0 kB)

Name Size
md5:a16fa2a0a7912bcfa6f085052867b4af
198.0 kB Preview Download

Additional details

Identifiers

Eprint ID
32410
Resolver ID
CaltechAUTHORS:20120713-091419180

Related works

Funding

NSF
PHY-0803371
Army Research Office (ARO)
W911NF-09-1-0442
Department of Energy (DOE)
DE-FG03-92-ER40701

Dates

Created
2012-07-19
Created from EPrint's datestamp field
Updated
2023-06-02
Created from EPrint's last_modified field

Caltech Custom Metadata