AWhat changed
In 2007 Lignier and colleagues periodically shook a one-dimensional optical lattice containing a rubidium condensate and inferred suppressed interwell tunneling from its expansion, finding agreement with a Bessel-function dependence over the tested range. In a subsequent 2008 preprint Zenesini and colleagues ramped the drive in a three-dimensional lattice: interference visibility decreased and returned when the drive was removed. Their excitation spectra and comparison with changes in static lattice depth supported a reversible drive-induced superfluid–Mott transition.
Scientific scope
In 2007 Lignier and colleagues periodically shook a one-dimensional optical lattice containing a rubidium condensate and inferred suppressed interwell tunneling from its expansion, finding agreement with a Bessel-function dependence over the tested range. In a subsequent 2008 preprint Zenesini and colleagues ramped the drive in a three-dimensional lattice: interference visibility decreased and returned when the drive was removed. Their excitation spectra and comparison with changes in static lattice depth supported a reversible drive-induced superfluid–Mott transition. The 2007 tunneling rate is inferred from expansion and finite resolution does not establish an exactly zero microscopic amplitude. The later transition is inferred from interference visibility, modulation response and a calibrated effective Bose–Hubbard model in a finite trapped gas, not a direct measurement of a thermodynamic singularity or proof of perfect adiabaticity. Driving can excite higher bands or reduce coherence in some parameter regimes. The two studies have different source-specific bylines and build on prior driven-lattice and superfluid–Mott work.
Evidence
The linked original works support the scoped statement and contribution attribution. WRS has not independently replayed experiments or reconstructed a full mathematical proof. The 2007 tunneling rate is inferred from expansion and finite resolution does not establish an exactly zero microscopic amplitude. The later transition is inferred from interference visibility, modulation response and a calibrated effective Bose–Hubbard model in a finite trapped gas, not a direct measurement of a thermodynamic singularity or proof of perfect adiabaticity. Driving can excite higher bands or reduce coherence in some parameter regimes. The two studies have different source-specific bylines and build on prior driven-lattice and superfluid–Mott work.
Contributors
- The named authors in the research record · SCIENCE: These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.
- Dynamical control of matter-wave tunneling in periodic potentials
- Coherent control of dressed matter waves
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