Error detection is integrated into adaptive quantum circuits for non-equilibrium phase transition simulations by mapping errors to resets, achieving post-selection-free logical simulations near break-even on current hardware.
Error detection without post-selection in adaptive quantum circuits
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abstract
Current quantum computers are limited by errors, but have not yet achieved the scale required to benefit from active error correction in large computations. We show how simulations of open quantum systems can benefit from error detection. In particular, we use Quantinuum's H2 quantum computer to perform logical simulations of a non-equilibrium phase transition using the [[4,2,2]] code. Importantly, by converting detected errors into random resets, which are an intended part of the dissipative quantum dynamics being studied, we avoid any post-selection in our simulations, thereby eliminating the exponential cost typically associated with error detection. The encoded simulations perform near break-even with unencoded simulations at short times.
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UNVERDICTED 2representative citing papers
Hardware benchmarks of repetition and triangular color codes for quantum error detection show promise for scaling despite exponential sample costs and embedding overheads.
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Error detection without post-selection in adaptive quantum circuits
Error detection is integrated into adaptive quantum circuits for non-equilibrium phase transition simulations by mapping errors to resets, achieving post-selection-free logical simulations near break-even on current hardware.
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Opportunities and challenges in scaling quantum error detection on hardware
Hardware benchmarks of repetition and triangular color codes for quantum error detection show promise for scaling despite exponential sample costs and embedding overheads.