A quantum battery is proposed on the coherent Ising machine platform, with coherent ergotropy shown to decay slower than incoherent ergotropy and to peak simultaneously with charging power at an optimal pump switch-off time.
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A paired dual-squeezer Mach-Zehnder interferometer reaches Heisenberg-limited phase sensitivity with direct photon-number-difference detection by overcoming the equal-intensity divergence of standard squeezed-vacuum schemes.
A tunable parallel amplitude estimation algorithm achieves near-Heisenberg query scaling and logarithmic depth via GHZ states and quantum signal processing, with a near-optimality proof using the parallel quantum adversary method.
Initial quantum correlations among qubits enhance quantum Fisher information for temperature estimation in nonequilibrium Markovian thermalization, with early-time peaks and near-standard-quantum-limit performance for entangled states at high temperatures.
Introduces three entanglement measures for anyonic systems showing decomposition of total entanglement into conventional and anyonic charge components with geometric equivalence.
Extends qubit-channel metrology to spectator noise, supplying algebraic tests that decide when correlated n-qubit inputs beat single-qubit inputs under different noise types.
Hybrid optomechanics with three-level atom enables steady-state transfer of mechanical squeezing to optical field via coherent phonon pump or squeezed bath, achieving high fidelity.
citing papers explorer
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Quantum batteries in coherent Ising machine
A quantum battery is proposed on the coherent Ising machine platform, with coherent ergotropy shown to decay slower than incoherent ergotropy and to peak simultaneously with charging power at an optimal pump switch-off time.
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Toward Heisenberg-Limited Interferometry with Dual Squeezers
A paired dual-squeezer Mach-Zehnder interferometer reaches Heisenberg-limited phase sensitivity with direct photon-number-difference detection by overcoming the equal-intensity divergence of standard squeezed-vacuum schemes.
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Near-Heisenberg-limited parallel amplitude estimation with logarithmic depth circuit
A tunable parallel amplitude estimation algorithm achieves near-Heisenberg query scaling and logarithmic depth via GHZ states and quantum signal processing, with a near-optimality proof using the parallel quantum adversary method.
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Nonequilibrium thermometry via an ensemble of initially correlated qubits
Initial quantum correlations among qubits enhance quantum Fisher information for temperature estimation in nonequilibrium Markovian thermalization, with early-time peaks and near-standard-quantum-limit performance for entangled states at high temperatures.
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Quantum Resource Theories of Anyonic Entanglement
Introduces three entanglement measures for anyonic systems showing decomposition of total entanglement into conventional and anyonic charge components with geometric equivalence.
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Noisy initial-state qubit-channel metrology with additional undesirable noisy evolution
Extends qubit-channel metrology to spectator noise, supplying algebraic tests that decide when correlated n-qubit inputs beat single-qubit inputs under different noise types.
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Steady-state squeezing transfer in hybrid optomechanics
Hybrid optomechanics with three-level atom enables steady-state transfer of mechanical squeezing to optical field via coherent phonon pump or squeezed bath, achieving high fidelity.