Optimal probes for noise estimation in vector encoding channels show a descending staircase of entanglement with rising noise strength, with fully product states becoming optimal at high noise.
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UNVERDICTED 6representative citing papers
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.
For suitable spatial and temporal correlations in non-Markovian dephasing, entangled probes achieve superior sensitivity scaling with probe number compared to separable states in Ramsey spectroscopy.
Reports experimental measurement of RF signal frequency at 7e-9 fractional uncertainty using subharmonic excitation in a single Ca ion quantum harmonic oscillator, claimed as most precise with this platform.
A numerically efficient method is established to determine the quantum Cramer-Rao bound for continuously monitored quantum sensors subject to general environmental noise.
High-order squeezed states can deliver better metrological precision than squeezed vacuum at equal occupations, with the advantage depending on the state family and sensitive to dephasing noise.
citing papers explorer
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Optimal quantum precision in noise estimation: Is entanglement necessary?
Optimal probes for noise estimation in vector encoding channels show a descending staircase of entanglement with rising noise strength, with fully product states becoming optimal at high noise.
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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.
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Entanglement Enhanced Sensing with Qubits affected by non-Markovian Dephasing
For suitable spatial and temporal correlations in non-Markovian dephasing, entangled probes achieve superior sensitivity scaling with probe number compared to separable states in Ramsey spectroscopy.
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Nonlinear-enhanced wideband sensing via subharmonic excitation of a quantum harmonic oscillator
Reports experimental measurement of RF signal frequency at 7e-9 fractional uncertainty using subharmonic excitation in a single Ca ion quantum harmonic oscillator, claimed as most precise with this platform.
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Quantum Cramer-Rao Precision Limit of Noisy Continuous Sensing
A numerically efficient method is established to determine the quantum Cramer-Rao bound for continuously monitored quantum sensors subject to general environmental noise.
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Quantum metrological advantage of high-order squeezed states
High-order squeezed states can deliver better metrological precision than squeezed vacuum at equal occupations, with the advantage depending on the state family and sensitive to dephasing noise.