$n$ -qubit,
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Sequentially Encodable Codeword Stabilized Codes

Sowrabh Sudevan, Sourin Das, Thamadathil Aswanth,Navin Kashyap

2024 IEEE International Symposium on Information Theory Workshops (ISIT-W)(2024)

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Abstract
$n$ -qubit, $m$ -uniform states are $[[n,\ 0,\ m+1]]$ nonde-generate quantum error correcting codes (QECC). The codeword stabilized (CWS) codes use [ $n, k, d\geq m+1$ ] classical codes and $m$ -uniform graph states to construct $[[n,\ k,\ m+1]]$ QECCs. We provide a set of conditions on the classical codes to obtain CWS codes, which can be encoded in a proposed measurement-based approach. We arrive at an explicit construction of a CWS code when the starting $m$ -uniform graph state is a cluster state of qubits on a one-dimensional lattice. The proposed encoding protocol admits sequential encoding of logical qubits, making it suitable for quantum memory applications.
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Key words
Codeword,Non-degenerate,Forward Error Correction,Qubit State,Uniform State,Sequence Encoding,Static Graph,Quantum Error Correction,Quantum Memory,System State,Loss Of Generality,Minimum Distance,Binary Vector,Quantum Computing,Product State,Generator Matrix,Binary Code,Pauli Matrices,Linear Code,Code Construction,Primitive Element,Code Space,Single Qubit
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