Punctured surface codes map disjoint or overlapping Z-couplings to a single logical Z for protected distributed estimation of many-body Hamiltonian parameters.
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Integrating repetition code QEC with logical GHZ entanglement in CMOS spin qubits reduces effective dephasing and enables up to order-of-magnitude improvements in sensitivity to axion-electron coupling g_ae by restoring entanglement-enhanced sensing.
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Distributed estimation of many-body Hamiltonians via punctured surface code
Punctured surface codes map disjoint or overlapping Z-couplings to a single logical Z for protected distributed estimation of many-body Hamiltonian parameters.
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Quantum Error Correction Assisted Axion Search in CMOS Spin Qubit Arrays
Integrating repetition code QEC with logical GHZ entanglement in CMOS spin qubits reduces effective dephasing and enables up to order-of-magnitude improvements in sensitivity to axion-electron coupling g_ae by restoring entanglement-enhanced sensing.