Results 41 to 50 of about 172,944 (286)

Overcoming erasure errors with multilevel systems

open access: yesNew Journal of Physics, 2017
We investigate the usage of highly efficient error correcting codes of multilevel systems to protect encoded quantum information from erasure errors and implementation to repetitively correct these errors. Our scheme makes use of quantum polynomial codes
Sreraman Muralidharan   +4 more
doaj   +1 more source

Nonbinary quantum codes [PDF]

open access: yesIEEE Transactions on Information Theory, 1999
We present several results on quantum codes over general alphabets (that is, in which the fundamental units may have more than 2 states). In particular, we consider codes derived from finite symplectic geometry assumed to have additional global symmetries.
openaire   +4 more sources

Good Quantum Convolutional Error Correction Codes And Their Decoding Algorithm Exist [PDF]

open access: yes, 1998
Quantum convolutional code was introduced recently as an alternative way to protect vital quantum information. To complete the analysis of quantum convolutional code, I report a way to decode certain quantum convolutional codes based on the classical ...
A. Dholakia   +30 more
core   +2 more sources

Quantum Topological Error Correction Codes are Capable of Improving the Performance of Clifford Gates

open access: yesIEEE Access, 2019
The employment of quantum error correction codes (QECCs) within quantum computers potentially offers a reliability improvement for both quantum computation and communications tasks.
Daryus Chandra   +6 more
doaj   +1 more source

Asymmetric Entanglement-Assisted Quantum MDS Codes Constructed from Constacyclic Codes

open access: yesEntropy, 2023
Due to the asymmetry of quantum errors, phase-shift errors are more likely to occur than qubit-flip errors. Consequently, there is a need to develop asymmetric quantum error-correcting (QEC) codes that can safeguard quantum information transmitted ...
Jianzhang Chen   +7 more
doaj   +1 more source

Near-Hashing-Bound Multiple-Rate Quantum Turbo Short-Block Codes

open access: yesIEEE Access, 2019
Quantum stabilizer codes (QSCs) suffer from a low quantum coding rate since they have to recover the quantum bits (qubits) in the face of both bit-flip and phase-flip errors. In this treatise, we conceive a low-complexity concatenated quantum turbo code (
Daryus Chandra   +3 more
doaj   +1 more source

EXIT-Chart Aided Design of Irregular Multiple-Rate Quantum Turbo Block Codes

open access: yesIEEE Access, 2023
We propose a novel quantum turbo short-block code, which subsumes multiple-rate quantum short-block codes (MR-QSBCs) as the outer codes and a quantum unity-rate code (QURC) as the inner code. The proposed design is denoted as MR-QSBC-QURC.
Daryus Chandra, Soon Xin Ng, Lajos Hanzo
doaj   +1 more source

Quantum Synchronizable Codes From Quadratic Residue Codes and Their Supercodes

open access: yes, 2014
Quantum synchronizable codes are quantum error-correcting codes designed to correct the effects of both quantum noise and block synchronization errors. While it is known that quantum synchronizable codes can be constructed from cyclic codes that satisfy ...
Fujiwara, Yuichiro   +2 more
core   +1 more source

Construction and Decoding of Quantum Margulis Codes [PDF]

open access: yesQuantum
Quantum low-density parity-check codes are a promising approach to fault-tolerant quantum computation, offering potential advantages in rate and decoding efficiency.
Michele Pacenti   +2 more
doaj   +1 more source

Sparse Quantum Codes from Quantum Circuits [PDF]

open access: yesProceedings of the forty-seventh annual ACM symposium on Theory of Computing, 2015
We describe a general method for turning quantum circuits into sparse quantum subsystem codes. The idea is to turn each circuit element into a set of low-weight gauge generators that enforce the input-output relations of that circuit element. Using this prescription, we can map an arbitrary stabilizer code into a new subsystem code with the same ...
Dave Bacon   +3 more
openaire   +3 more sources

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