Information Theory and Quantum Physics - Herbert S. The results show that the error-correction performance of non-Gaussian data is better than Gaussian data, where the frame error rate can be reduced by 50 % for code rate 0.1 at SNR of 0.1554 and the average iteration number can be reduced by 25 %. evolve Cryptography, Information Theory, and Error-Correction: A Handbook for the. Furthermore, we compare the error-correction performance of Gaussian data and non-Gaussian data. Now we can perform a fuzzy orthogonal measurement on the data, with two outcomes: the state is projected onto either the code subspace or the complementary. For example, if we can correct a Zerror, we can also correct ei Z cos + isin Z for arbitrary. Multidimensional reconciliation and multiedge-type low-density parity-check codes (MET LDPC) are used in a non-Gaussian reconciliation scheme, where the layered belief propagation decoding algorithm of MET LDPC codes is used to reduce the decoding complexity. In this paper, we propose a non-Gaussian reconciliation method to obtain identical keys from non-Gaussian data. 2(1+) This is why 3 is needed for bit-flips. In general, an -qubit code, protecting against single-qubit bit-flips requires. This is why we can distinguish errors and correct them. However, non-Gaussian reconciliation has not been deeply researched, which is one of the key technologies in CV QKD. So, there will be 4 orthogonal 2D subspaces (correct and 3 with errors), which all fit well into 8D Hilbert space. The protocol is broadly applicable to quantum. ![]() Crucially, by combining in-sequence readouts, data processing, and feed-forward operations, these correlated errors are suppressed within the execution of the quantum circuit. ![]() For Gaussian-modulated coherent-state CV QKD, photon subtraction can realize non-Gaussian modulation, which can be equivalently implemented by non-Gaussian postselection. Here, we use an array of cesium spectator qubits to correct correlated phase errors on an array of rubidium data qubits. Theoretical physicists had previously proposed a solution using spectator qubits, a set of qubits that don’t store any necessary data but could be embedded within a quantum computer. Non-Gaussian modulation can improve the performance of continuous-variable quantum key distribution (CV QKD). It’s a very daunting and difficult task to try to correct the errors within a quantum system, said Bernien.
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