Real-time renormalization group on quantum operations produces chaotic flows in coherent-dominant regimes, and the measurement-induced PT transition belongs to the 1D Yang-Lee edge singularity universality class.
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Nonnormality is an intrinsically dissipative property of Lindbladian generators that controls transient growth in open quantum dynamics and increases the cost of quantum simulations.
Optimal initial states for non-equilibrium quantum thermometry exhibit the quantum Mpemba effect and thermalize faster than most states in Markovian models.
Ultimate precision bounds for multiparameter Markovian noise metrology show average variance scaling as Ω(1/(T R²)) with Heisenberg scaling in dissipative channels R when using entangled probes and high-rank signal correlations, attainable via rapid prepare-and-measure protocols.
The geometry of a symmetry landscape in covariance space determines whether wave packets in linear open quantum systems diffuse, localize, or collapse at long times.
Loss in an auxiliary cavity induces nonreciprocal excitation exchange in a three-cavity quantum battery, yielding significantly higher steady-state energy in the battery than the charger.
Thermal instabilities and noise modify quantum measurement statistics in a sensitive, nontrivial way across the weak-to-strong crossover depending on temperature, probe properties, and state selections.
Optimal cavity modulation via Krylov theory extends qubit lifetime in inhomogeneous spin ensembles by an order of magnitude over inhomogeneity and cavity losses.
A new bound based on state-Hamiltonian correlations gives the exact maximum efficiency for multi-bath thermal engines and is achievable beyond the quasistatic regime in a quantum dot model.
Open photon condensates form metastable plateaus with thermal-like fluctuations and undergo multiple non-Hermitian phase transitions via ghost attractors and exceptional points.
Derives a quantum speed limit for the OTOC decay rate by mapping scrambling to open-system decoherence bounded by system-environment coupling strength and environmental correlation functions.
Quantum trajectory algorithm achieves additive O(T + log(1/ε)) query complexity for simulating dissipative Lindbladians.
Rydberg EIT spectroscopy with linearly polarized RF fields identifies two angular momentum ladder types with opposite central EIT peak behavior, challenging SI-traceable electrometer assumptions.
Indirect measurements in quantum reservoir computing improve execution time scaling, overall performance, and memory capacity over projective measurements and classical feedback methods.
Spin-induced deformation in the Bateman dual oscillator framework yields non-Markovian reduced dynamics with persistent oscillations and fractal scaling that mimic time crystals in a globally unitary quantum system.
Energy modeling and parameter optimization for cat-qubit superconducting quantum computers performing semiclassical QFT with error correction indicates an energetic advantage over classical systems for more than 26 qubits under cryogenic assumptions.
Rotational quantum tunneling of a pinned-magnetization nano-particle in a superconducting trap is protected against rest-gas decoherence by near-perfect axial symmetry and lies within experimentally accessible parameter ranges.
Two-tone driving of a superconducting qubit generates strong entanglement between two magnon modes in millimeter-sized YIG spheres containing more than 10^18 spins.
A contextual cavity QED analogue of the Stern-Gerlach experiment is proposed in which continuous phase-sensitive detection of the cavity field drives spontaneous dressed-state polarization and persistent coherent-state superpositions.
Steady-state entanglement with concurrence above 0.9 is generated between optical emitters by optically tuning Rabi-split dressed states to couple via a THz channel and collective dissipation.
Simulations demonstrate that Krotov optimal control can achieve gate fidelities ≳0.9 in noisy static exchange-coupled surface qubits by adapting to specific noise sources, outperforming standard Rabi driving.
Provides component-wise energy estimates for Rydberg quantum computers and reports a potential energy advantage over classical DFT execution for the Quantum Fourier Transform under ideal error-free conditions.
citing papers explorer
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Renormalization of Quantum Operations: Parity-Time Transition and Chaotic Flows
Real-time renormalization group on quantum operations produces chaotic flows in coherent-dominant regimes, and the measurement-induced PT transition belongs to the 1D Yang-Lee edge singularity universality class.
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Nonnormality and Dissipation in Markovian Quantum Dynamics: Implications for Quantum Simulation
Nonnormality is an intrinsically dissipative property of Lindbladian generators that controls transient growth in open quantum dynamics and increases the cost of quantum simulations.
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Quantum Mpemba Effect in Non-Equilibrium Quantum Thermometry
Optimal initial states for non-equilibrium quantum thermometry exhibit the quantum Mpemba effect and thermalize faster than most states in Markovian models.
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Precision Limits of Multiparameter Markovian-Noise Metrology
Ultimate precision bounds for multiparameter Markovian noise metrology show average variance scaling as Ω(1/(T R²)) with Heisenberg scaling in dissipative channels R when using entangled probes and high-rank signal correlations, attainable via rapid prepare-and-measure protocols.
-
Wave packet landscape in linear open quantum systems
The geometry of a symmetry landscape in covariance space determines whether wave packets in linear open quantum systems diffuse, localize, or collapse at long times.
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Loss-induced nonreciprocal quantum battery
Loss in an auxiliary cavity induces nonreciprocal excitation exchange in a three-cavity quantum battery, yielding significantly higher steady-state energy in the battery than the charger.
-
Weak-to-Strong Measurement Transition with Thermal Instabilities
Thermal instabilities and noise modify quantum measurement statistics in a sensitive, nontrivial way across the weak-to-strong crossover depending on temperature, probe properties, and state selections.
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Optimally Controlled Storage of a Qubit in an Inhomogeneous Spin Ensemble
Optimal cavity modulation via Krylov theory extends qubit lifetime in inhomogeneous spin ensembles by an order of magnitude over inhomogeneity and cavity losses.
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An Information-Theoretic Bound on Thermodynamic Efficiency and the Generalized Carnot's Theorem
A new bound based on state-Hamiltonian correlations gives the exact maximum efficiency for multi-bath thermal engines and is achievable beyond the quasistatic regime in a quantum dot model.
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Emergent thermal fluctuations and non-Hermitian phase transitions in open photon condensates
Open photon condensates form metastable plateaus with thermal-like fluctuations and undergo multiple non-Hermitian phase transitions via ghost attractors and exceptional points.
-
Quantum speed limit for the OTOC from an open systems perspective
Derives a quantum speed limit for the OTOC decay rate by mapping scrambling to open-system decoherence bounded by system-environment coupling strength and environmental correlation functions.
-
Quantum algorithms based on quantum trajectories
Quantum trajectory algorithm achieves additive O(T + log(1/ε)) query complexity for simulating dissipative Lindbladians.
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EIT Spectroscopy of Rydberg Levels Dressed by Linearly Polarized RF fields: Complementary Angular Response for Two Types of Transition Ladders
Rydberg EIT spectroscopy with linearly polarized RF fields identifies two angular momentum ladder types with opposite central EIT peak behavior, challenging SI-traceable electrometer assumptions.
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Harnessing quantum back-action for time-series processing
Indirect measurements in quantum reservoir computing improve execution time scaling, overall performance, and memory capacity over projective measurements and classical feedback methods.
-
Spin-Induced Non-Markovian Time-Crystal-Like Dynamics and Fractal Scaling in the Bateman Dual Oscillator
Spin-induced deformation in the Bateman dual oscillator framework yields non-Markovian reduced dynamics with persistent oscillations and fractal scaling that mimic time crystals in a globally unitary quantum system.
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Unveiling Energetic Advantage in Superconducting Cat-Qubits Quantum Computation
Energy modeling and parameter optimization for cat-qubit superconducting quantum computers performing semiclassical QFT with error correction indicates an energetic advantage over classical systems for more than 26 qubits under cryogenic assumptions.
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Rotational Quantum Tunneling of a Magnetic Dipole in a Superconducting Trap
Rotational quantum tunneling of a pinned-magnetization nano-particle in a superconducting trap is protected against rest-gas decoherence by near-perfect axial symmetry and lies within experimentally accessible parameter ranges.
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Macroscopic entanglement between two magnon modes via two-tone driving of a superconducting qubit
Two-tone driving of a superconducting qubit generates strong entanglement between two magnon modes in millimeter-sized YIG spheres containing more than 10^18 spins.
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Operating a contextual Stern-Gerlach apparatus
A contextual cavity QED analogue of the Stern-Gerlach experiment is proposed in which continuous phase-sensitive detection of the cavity field drives spontaneous dressed-state polarization and persistent coherent-state superpositions.
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Entanglement of two optical emitters mediated by a terahertz channel
Steady-state entanglement with concurrence above 0.9 is generated between optical emitters by optically tuning Rabi-split dressed states to couple via a THz channel and collective dissipation.
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Overcoming limitations on gate fidelity in noisy static exchange-coupled surface qubits
Simulations demonstrate that Krotov optimal control can achieve gate fidelities ≳0.9 in noisy static exchange-coupled surface qubits by adapting to specific noise sources, outperforming standard Rabi driving.
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Energetics of Rydberg-atom Quantum Computing
Provides component-wise energy estimates for Rydberg quantum computers and reports a potential energy advantage over classical DFT execution for the Quantum Fourier Transform under ideal error-free conditions.
- Decoherence of spatial superpositions along stationary worldlines