Quantum Gases
Ultracold atomic and molecular gases, Bose-Einstein condensation, Feshbach resonances, spinor condensates, optical lattices, quantum simulation with cold atoms and molecules, macroscopic interference phenomena
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Annular condensate coupled to traveling-wave modes yields tunable rotational supersolids and cavity-detectable Goldstone-Higgs excitations.
· “Supersolid Rotation in an Annular Bose-Einstein Condensate coupled to a Ring Cavity”
No fitting parameters: the most probable photon counts in a disordered cavity array follow a number-theory distribution.
· “Universal entropic occupation statistics in disordered bosonic resonators”
Exchange phase is set by the angular momentum sector; momentum distribution and Tan contact match anyonic predictions exactly.
· “Exact statistical transmutation of quantum mixtures on a ring”
Repulsive van der Waals force between the (0,1) and (1,0) states suppresses loss by seven orders, enabling evaporation.
· “Ro-vibrational van der Waals interaction between ultracold polar molecules”
Single-tile aperiodic structures in microcavities produce six-fold Bragg peaks and synchronization unlike periodic or Penrose cases.
Coupling both qubit states to the Rydberg level makes the dominant detuning error vanish; a local correction also works.
The experiment extends polaron studies from mass ratio about 7 to about 22, where heavy-impurity theory can be tested.
· “The heavy Fermi polaron I: the Lithium-Cesium experiment”
Closed-form bands and quantum geometry place the lowest band within 8.3 percent of an ideal Chern band.
Subspaces with product-state bases keep locality; entangled subspaces dress local moves with global operators
· “Structured Non-Locality and Emergent Locality in Cavity-QED Many-Body Dynamics”
When the pump width matches the heavy-direction wavelength, stripes and self-oscillation emerge there.
Replacing a density gradient with Boltzmann's law makes tunneling-diode simulations match full quantum current-voltage curves.
· “A Simple Regularization of the Smooth Quantum Hydrodynamic Model”
Resonant charge exchange stops the ion loss that normally empties a Paul trap in 3 minutes.
Measured coupling follows an anisotropic XXZ law and can be switched with microwaves.
· “Observation of electron spin interactions between Rydberg atoms”
Choosing principal quantum numbers two apart turns Rydberg interactions into spin-position-locked exchange.
Interspecies repulsion suppresses phase slips, enables coherent switching, and can transfer circulation.
· “Spinor condensate persistent currents in an atomtronic Josephson necklace”
Spontaneous emission or multimode loss pushes ultracold fermions to random-matrix chaos; rank is the dial.
· “Dissipation-induced Sachdev-Ye-Kitaev physics in many-body cavity quantum electrodynamics”
Even with extra bands, a single quaternionic band on T^4 always develops a quantum-metric degeneracy.
· “Quaternionic Hermitian Band Geometry in Four Dimensions: Realization on S⁴ and Obstruction on T⁴”
A variational overlap potential predicts the pair's oscillation frequency to 5% and its partial-escape kick scale.
Coordinate transformations yield position-dependent mass and potential that steer matter waves around a hidden region.
Time-delayed s-wave pair order appears only at the boundaries of the trapped Tonks-Girardeau gas, not in the bulk.
· “Odd-frequency pair correlations in the trapped fermionic Tonks-Girardeau gas”
Only uneven nearest-neighbor exchange starts the escape; long-range terms reshape it, not trigger it.
After a quench, particle-number QFI spectrum distinguishes three dynamical phases and reveals pre-quench topology.
· “Quantum Fisher information in a quenched p + ip superfluid”
Geometric terms reach a third of pair size and 40% of coherence length, and the two lengths diverge across the crossover.
· “Pair size versus coherence length and quantum geometry in the spin-orbit coupled BCS-BEC crossover”
Ramping through the localization threshold yields universal scaling curves and confirms the static exponents.
· “Dynamical Signatures and Kibble-Zurek Scaling of Localization in Tilted Bose-Einstein Condensates”
A new analytic formula isolates equation-of-state physics in the quartic coefficient, reaching about 8% in FeSe.
Detuning also tunes optical depth, temperature, and density-fluctuation spectra in a 133Cs magneto-optical trap.
Static and microwave fields stop molecular losses, then a gradient ejects all but one molecule per trap.
· “A Protocol for Shielding-Enhanced Loading of Single Polar Molecules into Optical Tweezers”
In one ultracold gas, tilting magnetic dipoles switches crystal order from triangular droplets to stripes.
· “Competing triangular and stripe supersolid orders in a dipolar quantum gas”
Scale-by-scale spin fluctuations in a 2D Bose gas match the zero-temperature 1/ω spectrum of pure quantum noise.
The whole continuous spectrum becomes a family of localized, normalizable states in one and two dimensions.
· “Quantum-mechanical wave functions in singular potentials: linear and nonlinear states”
Structural complexity of snapshots tracks entanglement and pins U/t = 3.50, 4.75, 5.65 with no Hamiltonian input.
Closed and open Dicke transitions yield exponents z, ν, μ from finite-N fits that satisfy 1/μ = 1/ν + z.
· “Kibble--Zurek Scaling in the Dicke Model at Mesoscopic Scales”
A quantum weight generated by recursion, cut off when its imaginary part passes pi/2, reproduces the data.
A reduced action gives condensate phase fluctuations interactions like inflation's, with a resonant signal predicted to grow linearly.
· “Inflationary Bispectra and IR Physics from Quantum Simulators”
Cloud-shape measurements match a quantum-fluctuation model up to a dipolar length of 6,900 a0.
· “Electrostriction in a Bose-Einstein Condensate of Dipolar Molecules”
Quantum fluctuations split into density and spin channels, letting repulsive mean-field gases form self-bound droplets.
Writes arbitrary patterns at 10^-3 intensity resolution, hundreds to thousands of times faster than DMD or liquid-crystal displays.
· “Ultrafast and high resolution spatial light modulation for cold atoms”
In a tunable bosonic bath, one velocity reading substitutes for quantum-state reconstruction of the magnon–bath pair.
Edge speeds and shock width growth match Whitham theory for piston speeds up to three times sound speed.
Simulations show 1D dye-filled cavity arrays collapse onto the universal KPZ curve, guiding coherence experiments
· “KPZ scaling in one-dimensional arrays of photon condensates”
The result fixes the coefficient that controls triplet losses and short-range correlations across the BEC-BCS crossover.
· “Three-body contact for fermions. II. Non-degenerate limit”
Odd levels pin one phase; even levels forbid anomalous lattices; k=6,10,14... gain anyon permutations.
· “Topological phases and quantum criticality from SU(2) Chern-Simons-matter theories”
Quantum Monte Carlo maps the polaron's mass, coherence, and dressing cloud as the hard-core bath fills up.
· “Single-impurity polarons in hard-core lattice bosons at low and intermediate fillings”
A deterministic compact phase model turns vortices into multiplicative noise, with critical exponents matching directed percolation.
· “Far-from-equilibrium topological phase transition in one dimension”
A dipolar lattice model shows that only added particles, not holes, become phase coherent inside a fixed stripe channel.
· “One-sided stripe supersolidity from engineered non-axisymmetric dipolar interactions”
Superfluid turbulence is recast as a cascade of dual electric-field energies, with an inverse cascade.
· “Dual Gauge Theory for Two Dimensional Superfluid Turbulence”
Local snapshots of a domain wall reveal 1D full counting statistics and universal relaxation laws.
Ultracold cesium–rubidium collisions let a seven-level Otto engine adjust stroke timing and raise peak power at fixed efficiency.
· “Enhancing the power of a quantum heat engine via control of the system--reservoir coupling”
Graphene's Rashba term makes the AC phase a ticking clock; ordinary 2D gases keep a geometric phase.
Environmental memory beats the Markovian limit and widens the antibunching window for single-photon sources.
· “Antibunching Enhancement via Non-Markovianity in a Hybrid Optical-Microwave Cross-Cavity”
Coupling and detuning noise leave distinct spectral fingerprints; detuning tunes the response.
· “Fluctuation Spectra and Response Function of Coupled Atomic and Molecular BECs”
Fortran solvers use split-step Crank-Nicolson and imaginary-time propagation to capture vortex states.
· “OpenMP Fortran programs for rotating dipolar Bose-Einstein condensates”
Attaching two vortices per boson matches spectra, Chern numbers, and quasihole braiding phases below half filling.
Stripe, plane-wave, and single-minimum phases follow from one dispersion; the stripe phase is supersolid
· “Two-component ultracold Bose gases with spin-orbit coupling”
Below the threshold both lattice halves tunnel identically; above it, the Rydberg blockade splits their LZ paths.
· “Dynamical Crossover in Landau-Zener Tunneling in Dissipative Rydberg Lattices”
Generalized dissipative Kitaev chains with next-nearest-neighbor jump terms realize steady states with topological winding number 4, while…
· “Topological states of generalized dissipative Majorana wires”
A universal short-time law for quantum critical states, with a crossover that ultracold atom experiments can test now.
· “Tunable Memory Effect in Dissipative Strongly Correlated Quantum Systems”
Short matter-wave revival and lattice recapture give microscopes local access to off-diagonal correlations.
Ripples appear only when a topological quench destroys boundary modes, so density movies can probe Majorana physics.
· “Ripple Signatures of Majorana Hybridization across a Topological Quantum Quench”
A fixed fermion per site plus N bosons yields Rabi oscillations whose frequency grows as the square root of N.
· “Jaynes--Cummings dynamics of fermionic heteronuclear dimers in the Mott regime”
A gate voltage flips which layer carries the edge current, giving three switchable superconducting phases.
Tensor-network maps put the experimental regime in localized phases and chart a route to a supersolid.
Exact solution of the XX chain: every large-scale correlator is fixed by the interface transmission coefficient
· “Out-of-equilibrium inhomogeneous XX chains: Exact results and the hydrodynamic limit”
Weakly coupled third color turns a strongly paired two-color subsystem into coexisting crystalline and superfluid order.
· “Fermionic Lattice Supersolidity in the Attractive Three-Color Fermi-Hubbard Model”
A single fitted T/N reproduces the fluctuation pattern, exposing number–phase back-action hidden from static order
· “Fluctuation-based evidence for number--phase dynamics in a frustrated orbital superfluid”
A review shows how Raman coupling and density switch a BEC between stripe, plane-wave, and single-minimum states.
· “Bose-Einstein condensates with Raman-induced spin-orbit coupling : An overview”
Rotation replaces the Landau threshold with harmonic resonances and adds a workless Magnus deflection.
· “Quantum tribology: acceleration-induced Stokes friction and Magnus force in correlated Bose fluids”
By controlling the central domain's polarization, spin currents can accelerate, suppress, or reverse wall motion.
· “Coherent Control of Domain-Wall Transport in an Ultracold Bose Gas”
For light atoms and deep lattices, phase jitter can outheat intensity noise, and a measured noise spectrum predicts the rate.
By tuning cavity-exciton detuning, coherence decays switch from KPZ stretched exponentials to EW power laws.
· “Crossing over universal scaling laws in two-dimensional driven dissipative condensates”
In Rydberg-atom arrays, frequency and damping collapse across four lattice geometries under one rescaling.
· “Observation of far-from-equilibrium scaling in the transient dynamics of 2D quantum magnets”
Two qubits in one atom couple via a tunable field—no extra ancilla atoms needed.
Four lattice singularities fix gap and chemical potential algebraically, no full spectral fitting needed.
· “Extracting the pairing gap from van Hove singularities in rf spectra of the Fermi Hubbard model”
Tracking lattice motion shows three sound branches, one of which hides large strain behind a near-zero density signal.
· “Acoustic fluctuations of two-dimensional dipolar supersolids”
It means the experimental 'self-bound' insulator is a finite-temperature effect, not a ground-state phase.
In fractional Chern insulators, binding-energy ratios approach 1/2 and 2/3, a practical charge probe.
· “Anyon-Impurity Bound States in Quantum-Engineered Fractional Chern Insulators”
Beyond that match point, stronger loss reflects the wavepacket via the quantum Zeno effect.
New criteria tell when the phase-space noise is valid, when mean field fails, and when simulations are exact.
One nonlinear equation drives mutual information, negativity, and Rényi entropies for any tunneling ramp.
· “Field-Space Entanglement Dynamics Between Tunnel-Coupled Luttinger Liquids”
The shift traces to molecular polarizabilities four to seven times the atomic value, opening a window on Feshbach molecules.
· “Large anomalous shifts of potassium-39 Feshbach resonances”
