2019
DOI: 10.1007/s11433-019-9396-8
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Quantum error rejection for faithful quantum communication over noise channels

Abstract: Quantum error detection relies primarily on precise measurement of qubit parity, a fundamental operation in quantum information processing. Here, we introduce a resilient parity-controlled gate tailored for detecting quantum errors within a 2D Rydberg atom array. Our method enables the discrimination between even and odd parities of virtually excited control atoms by tracking the dynamic evolution of an auxiliary atom. Using spin-exchange dipolar interactions of Rydberg states and single-and two-photon driving… Show more

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Cited by 15 publications
(5 citation statements)
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“…The general equation of density matrix is given by Eq. (17). Now let us analyze a two-qubit state which is given by for this case ρ T is obtained as www.nature.com/scientificreports/ Besides, the experimental density matrix (18) for two qubits is given by the following formula 67,93 here T j 1 j 2 is defined as T j 1 j 2 = S j 1 × S j 2 where the Stokes parameters are S 0 = P |0I� + P |1I� , S 1 = P |0X� − P |1X� , S 2 = P |0Y � − P |1Y � , S 3 = P |0Z� − P |1Z� .…”
Section: Resultsmentioning
confidence: 99%
“…The general equation of density matrix is given by Eq. (17). Now let us analyze a two-qubit state which is given by for this case ρ T is obtained as www.nature.com/scientificreports/ Besides, the experimental density matrix (18) for two qubits is given by the following formula 67,93 here T j 1 j 2 is defined as T j 1 j 2 = S j 1 × S j 2 where the Stokes parameters are S 0 = P |0I� + P |1I� , S 1 = P |0X� − P |1X� , S 2 = P |0Y � − P |1Y � , S 3 = P |0Z� − P |1Z� .…”
Section: Resultsmentioning
confidence: 99%
“…Then it increases the bit-error rate of random sampling in the security check. Fortunately, the influence of the channel noise can be suppressed by using photonic logical qubits, which are encoded in decoherence-free subspaces and are robust to channel noise [64][65][66][67]. The GHZ state analyzer should be modified accordingly.…”
Section: Discussion and Summarymentioning
confidence: 99%
“…To eliminate the impacts of noises, several methods based on entanglement purification, [34][35][36] quantum error correction, [37,38] or quantum error rejection [39,40] have emerged. However, these strategies only work well if the interaction between particles and the environment is weak enough.…”
Section: Introductionmentioning
confidence: 99%