Two Doppler-free multiphoton schemes achieve microsecond coherent control of the 88Sr 1S0–3P0 clock transition on 3e6 free-space thermal atoms, suppressing Doppler dephasing 1000-fold versus single-photon excitation.
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Covariance matrices for finite-dimensional DFT-related position-momentum pairs are fully characterized via unitary invariants, convex geometry, and SDP, yielding extremal states and application bounds.
Quench dynamics in three-level dipole-interacting Rydberg arrays produce scalable spin-nematic squeezing with ξ² ∝ N^{-2/3} (all-to-all symmetric) or N^{-0.7} (antisymmetric), yielding F_Q ∝ N².
Magnetic materials described by an effective Dicke model exhibit perturbatively stable ground-state squeezing near a superradiant transition, providing a resource for quantum metrology and entanglement witnessing.
Transverse interactions in Dicke QBs induce collective spin squeezing for exponential coupling boost and act as nonlinear torque to guide optimal charging paths, remaining robust under dissipation and sometimes outperforming ideal cases.
Photon-number measurements near the Dicke superradiant phase transition herald collective spin cat states whose size grows with photon number and criticality.
The dynamical squeezing phase transition in bilayer XXZ spin models is universal across lattice geometries and interlayer coupling rescalings, with a new sub-linear scaling for short-range interactions.
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.
Nonadiabatic modulation near a quantum critical point strongly boosts photon emission from vacuum fluctuations, enhancing flux and non-classical properties even against thermal noise.
A quartic extension of the twisting-and-turning Hamiltonian generates new unstable fixed points that accelerate short-time amplification of quantum fluctuations, yielding enhanced sensitivity within accessible coherence times.
A protocol using emergent Hamiltonians enables storage of Bell-product and GHZ entangled states by making them exact eigenstates of a local Hamiltonian.
citing papers explorer
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Microsecond-Scale Coherent Control of a Forbidden Clock Transition with Doppler-Free Multiphoton Excitations
Two Doppler-free multiphoton schemes achieve microsecond coherent control of the 88Sr 1S0–3P0 clock transition on 3e6 free-space thermal atoms, suppressing Doppler dephasing 1000-fold versus single-photon excitation.
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The uncertainty geometry of finite-dimensional position and momentum
Covariance matrices for finite-dimensional DFT-related position-momentum pairs are fully characterized via unitary invariants, convex geometry, and SDP, yielding extremal states and application bounds.
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Scalable spin-nematic squeezing in multi-level dipole-interacting Rydberg atom arrays
Quench dynamics in three-level dipole-interacting Rydberg arrays produce scalable spin-nematic squeezing with ξ² ∝ N^{-2/3} (all-to-all symmetric) or N^{-0.7} (antisymmetric), yielding F_Q ∝ N².
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Dicke materials as a resource for quantum squeezing
Magnetic materials described by an effective Dicke model exhibit perturbatively stable ground-state squeezing near a superradiant transition, providing a resource for quantum metrology and entanglement witnessing.
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Spin-Squeezing-Enhanced Charging for Quantum Dicke Batteries
Transverse interactions in Dicke QBs induce collective spin squeezing for exponential coupling boost and act as nonlinear torque to guide optimal charging paths, remaining robust under dissipation and sometimes outperforming ideal cases.
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Generating collective spin cat states via photon-number measurements near the Dicke critical point
Photon-number measurements near the Dicke superradiant phase transition herald collective spin cat states whose size grows with photon number and criticality.
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Universal Spin Squeezing Dynamical Phase Transitions across Lattice Geometries, Dimensions, and Microscopic Couplings
The dynamical squeezing phase transition in bilayer XXZ spin models is universal across lattice geometries and interlayer coupling rescalings, with a new sub-linear scaling for short-range interactions.
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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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Quantum Vacuum Radiation Near a Critical Point
Nonadiabatic modulation near a quantum critical point strongly boosts photon emission from vacuum fluctuations, enhancing flux and non-classical properties even against thermal noise.
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Instability-Enhanced Quantum Sensing with Tunable Multibody Interactions
A quartic extension of the twisting-and-turning Hamiltonian generates new unstable fixed points that accelerate short-time amplification of quantum fluctuations, yielding enhanced sensitivity within accessible coherence times.
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From Bell Products to Greenberger-Horne-Zeilinger states: Quantum Memories via emergent Hamiltonians
A protocol using emergent Hamiltonians enables storage of Bell-product and GHZ entangled states by making them exact eigenstates of a local Hamiltonian.