Quantum error correction experiments face a trade-off where unconditional qubit reset can theoretically double error tolerance during logical operations, but no-reset approaches perform better in practice when reset operations are slow or error-prone, prompting the development of novel syndrome extraction circuits to mitigate these limitations.
Researchers developed practical zero-noise extrapolation techniques for quantum annealing that successfully mitigate both thermal and non-thermal errors in quantum systems without additional qubit overhead, demonstrated through experiments on a transverse-field Ising spin chain that aligned well with theoretical predictions.
cientists at NIST and Chalmers University of Technology have developed a groundbreaking quantum refrigeration system that achieves record-low temperatures for quantum computing operations.
Researchers have established fundamental theoretical bounds on quantum error mitigation techniques, proving that certain performance limitations are unavoidable physics constraints rather than technological shortcomings, with sampling overhead scaling exponentially with circuit depth for local depolarizing noise and confirming the optimality of probabilistic error cancellation for mitigating local dephasing noise.
A new method for correcting errors in the calculations of quantum computers potentially clears a major obstacle to a powerful new realm of computing.
This research advances quantum computing by developing and mathematically proving the effectiveness of multi-exponential error extrapolation techniques, while demonstrating how to efficiently combine it with quasi-probability and symmetry verification methods to achieve superior error mitigation in NISQ devices without requiring quantum error correction’s large qubit overhead.
Researchers from the University of Innsbruck have entangled two qubits distributed over several quantum objects and successfully transmitted their quantum properties.
Scientists introduced an open-source software package for error mitigation in quantum computation using zero-noise extrapolation.