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12 February 2011Cavity quantum electrodynamics based quantum low-density parity-check encoders and decoders
Quantum information processing (QIP) relies on delicate superposition states that are sensitive to interactions with
environment. The quantum gates are imperfect and the use of quantum error correction coding (QECC) is essential to
enable the fault-tolerant computing and to deal with quantum errors. The most critical gate, CNOT-gate, has been
implemented as a probabilistic device by using integrated optics. CNOT-gates from linear optics provide only
probabilistic outcomes and as such are not suitable for large-scale computation. In this paper, we show that arbitrary set
of universal quantum gates and gates from Clifford group, needed in QECC, can be implemented based on cavity
quantum electrodynamics (CQED). We further show that encoders/decoders for quantum LDPC codes can be
implemented based on Hadamard and CNOT gates using CQED. Finally, we perform simulations and evaluate
performance of several classes of quantum LDPC codes suitable for implementation in CQED technology.
Ivan B. Djordjevic
"Cavity quantum electrodynamics based quantum low-density parity-check encoders and decoders", Proc. SPIE 7948, Advances in Photonics of Quantum Computing, Memory, and Communication IV, 794813 (12 February 2011); https://doi.org/10.1117/12.873975
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Ivan B. Djordjevic, "Cavity quantum electrodynamics based quantum low-density parity-check encoders and decoders," Proc. SPIE 7948, Advances in Photonics of Quantum Computing, Memory, and Communication IV, 794813 (12 February 2011); https://doi.org/10.1117/12.873975