Results 21 to 30 of about 40,499 (317)

Asymmetric quantum error-correcting codes [PDF]

open access: yesPhysical Review A, 2007
The noise in physical qubits is fundamentally asymmetric: in most devices, phase errors are much more probable than bit flips. We propose a quantum error correcting code which takes advantage of this asymmetry and shows good performance at a relatively small cost in redundancy, requiring less than a doubling of the number of physical qubits for error ...
Ioffe, Lev, Mezard, Marc
openaire   +2 more sources

Convolutional-Neural-Network-Based Hexagonal Quantum Error Correction Decoder

open access: yesApplied Sciences, 2023
Topological quantum error-correcting codes are an important tool for realizing fault-tolerant quantum computers. Heavy hexagonal coding is a new class of quantum error-correcting coding that assigns physical and auxiliary qubits to the vertices and edges
Aoqing Li, Fan Li, Qidi Gan, Hongyang Ma
doaj   +1 more source

Quantum Convolutional Error Correction Codes [PDF]

open access: yesPhysical Review A, 1998
I report two general methods to construct quantum convolutional codes for quantum registers with internal $N$ states. Using one of these methods, I construct a quantum convolutional code of rate 1/4 which is able to correct one general quantum error for every eight consecutive quantum registers.
openaire   +6 more sources

Decoding Schemes for Foliated Sparse Quantum Error Correcting Codes [PDF]

open access: yes, 2018
Foliated quantum codes are a resource for fault-tolerant measurement-based quantum error correction for quantum repeaters and for quantum computation.
Bolt, A., Poulin, D., Stace, T. M.
core   +2 more sources

Quantum error correction with the semion code

open access: yesNew Journal of Physics, 2019
Abstract We present a full quantum error correcting procedure with the semion code: an off-shell extension of the double-semion model. We construct open-string operators that recover the quantum memory from arbitrary errors and closed-string operators that implement the basic logical operations for information processing. Physically, the
Dauphinais, Guillaume   +3 more
openaire   +6 more sources

New Quantum Codes Constructed by Quantum Caps in PG(3,9) and PG(4,9)

open access: yesIEEE Access, 2020
In this paper, we present a computer-supported method of searching for quantum caps. By means of this method and relevant knowledge of combinatorics, many quantum caps in $PG(3,9)$ and $PG(4,9)$ are constructively proven to exist.
Husheng Li, Ruihu Li, Qiang Fu
doaj   +1 more source

Error Avoiding Quantum Codes and Dynamical Stabilization of Grover's Algorithm [PDF]

open access: yes, 2000
An error avoiding quantum code is presented which is capable of stabilizing Grover's quantum search algorithm against a particular class of coherent errors.
Aldo Delgado   +14 more
core   +2 more sources

Homological error correction: Classical and quantum codes [PDF]

open access: yesJournal of Mathematical Physics, 2007
We prove several theorems characterizing the existence of homological error correction codes both classically and quantumly. Not every classical code is homological, but we find a family of classical homological codes saturating the Hamming bound. In the quantum case, we show that for nonorientable surfaces it is impossible to construct homological ...
Bombin, H., Martin-Delgado, M. A.
openaire   +3 more sources

Entanglement-assisted codeword-stabilized quantum codes with imperfect ebits

open access: yesICT Express, 2016
In quantum communication systems, quantum error-correcting codes (QECCs) are known to exhibit improved performance with the use of error-free entanglement bits (ebits).
Byungkyu Ahn, Jeonghwan Shin, Jun Heo
doaj   +1 more source

A combinatorial approach to quantum error correcting codes [PDF]

open access: yesDiscrete Mathematics, Algorithms and Applications, 2014
Motivated from the theory of quantum error correcting codes, we investigate a combinatorial problem that involves a symmetric n-vertices colorable graph and a group of operations (coloring rules) on the graph: find the minimum sequence of operations that maps between two given graph colorings.
German Luna   +3 more
openaire   +3 more sources

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