For inefficient detectors (0<η<1), the fastest possible decay rate of impurity moments with order θ≥1/2 freezes at 2ηℓ², independent of moment order and dimension; for qubits this is the exact optimum.
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Markovian state dynamics are thermodynamically incomplete because reservoir-channel assignments can vary while leaving the master equation unchanged, yielding different heat currents, entropy production, and noise.
The three-photon Kerr parametric oscillator exhibits a threefold degenerate ground state of superpositions of squeezed states, tunable to anti-squeezing, for a protected Kerr-cat qutrit.
citing papers explorer
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Efficiency-Induced Freezing in Quantum-State Purification
For inefficient detectors (0<η<1), the fastest possible decay rate of impurity moments with order θ≥1/2 freezes at 2ηℓ², independent of moment order and dimension; for qubits this is the exact optimum.
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Thermodynamic incompleteness of state dynamics in Markovian transport
Markovian state dynamics are thermodynamically incomplete because reservoir-channel assignments can vary while leaving the master equation unchanged, yielding different heat currents, entropy production, and noise.
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Quantum theory of a three-photon Kerr parametric oscillator
The three-photon Kerr parametric oscillator exhibits a threefold degenerate ground state of superpositions of squeezed states, tunable to anti-squeezing, for a protected Kerr-cat qutrit.