Quantum Computing
Learn about quantum algorithms, quantum information theory, and quantum computing applications
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Sat, Apr 4
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Quantum Circuits Reveal Hidden Entanglement Changes with New Entropy Measures
An index of dispersion transitioning from approximately 0. 85 to 0. 2 signals a fundamental shift in entanglement behaviour as measurement rates change within hybrid quantum circuits.
University of Maryland and Los Alamos National Laboratory Enhance Quantum Phase Estimation with Tapering Functions
Researchers from the University of Maryland and Los Alamos National Laboratory have developed a new quantum phase estimation algorithm, called the tapered quantum phase estimation algorithm, to improve the success probability of estimating phases of unitaries without relying on computationally expensive techniques. This approach utilizes tapering functions, commonly found in classical signal processing, to achieve optimal query complexity.
The Decryption Threshold — Re-estimating the Quantum Threat to Blockchain Infrastructure
Comparison of logical quantum resources (number of logical qubits and Toffoli gates) required to break 256-bit ECDLP for the secp256k1 curve, as reported by various prior works. Credit: Google Quantum AI whitepaper. By Mohamed Abdel-Kareem Recent technical disclosures from Google Quantum AI and the newly emerged Oratomic have provided updated resource estimates for executing Shor’s [...] The post The Decryption Threshold — Re-estimating the Quantum Threat to Blockchain Infrastructure appeare...
Using Digital Twin Methods to Accurately Simulate Quantum Error Correction
Diagram of a distance‑7 rotated surface code with 97 physical qubits (49 data qubits + 48 measurement qubits) modelled by the team. Grey nodes are data qubits; labeled circles are ancillas measuring X- or Z-type checks on neighboring data qubits. Edge colors encode the residual ZZ crosstalk strength (darker edges indicate stronger crosstalk).Credit: Quantum Elements [...] The post Using Digital Twin Methods to Accurately Simulate Quantum Error Correction appeared first on Quantum Computing R...