Kaijun Jiang
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View article: Macroscopic superposition of vortex states in a matter wave
Macroscopic superposition of vortex states in a matter wave Open
Generating the vortex-state superposition in a matter wave is demanded in many quantum processes such as quantum memory and quantum metrology. Here we report the experimental generation of macroscopic superposition of vortex states in ultr…
View article: Scale invariance of a spherical unitary Fermi gas
Scale invariance of a spherical unitary Fermi gas Open
A unitary Fermi gas in an isotropic harmonic trap is predicted to show scale and conformal symmetry that have important consequences in its thermodynamic and dynamical properties. By experimentally realizing a unitary Fermi gas in an isotr…
View article: Spin-orbital-angular-momentum-coupled quantum gases
Spin-orbital-angular-momentum-coupled quantum gases Open
We briefly review the recent progress of theories and experiments on spin-orbital-angular-momentum (SOAM)-coupled quantum gases. The coupling between the intrinsic degree of freedom of particles and their external orbital motions widely ex…
View article: Characterizing the temporal rotation and radial twist of the interference pattern of vortex beam
Characterizing the temporal rotation and radial twist of the interference pattern of vortex beam Open
We experimentally and theoretically characterize the temporal rotation and radial twist of the interference pattern of vortex beam with its conjugate copy. To quantitatively study the temporal rotation and radial twist, we controllably mod…
View article: Phase-locking matter-wave interferometer of vortex states
Phase-locking matter-wave interferometer of vortex states Open
Matter-wave interferometer of ultracold atoms with different linear momenta has been extensively studied in theory and experiment. The vortex matter-wave interferometer with different angular momenta is applicable as a quantum sensor for m…
View article: Synthesis and anti-acetylcholinesterase activities of novel glycosyl coumarylthiazole derivatives
Synthesis and anti-acetylcholinesterase activities of novel glycosyl coumarylthiazole derivatives Open
Eleven glycosyl coumarylthiazole derivatives are synthesized by cyclization and condensation of glycosyl thiourea with 3-bromoacetyl coumarins in ethanol. The reaction conditions are optimized and good yields of products (80%–95%) are obta…
View article: Universal relations for spin-orbit-coupled Fermi gases in two and three dimensions
Universal relations for spin-orbit-coupled Fermi gases in two and three dimensions Open
We present a comprehensive derivation of a set of universal relations for\nspin-orbit-coupled Fermi gases in three or two dimension, which follow from the\nshort-range behavior of the two-body physics. Besides the adiabatic energy\nrelatio…
View article: Ground-State Phase Diagram of a Spin-Orbital-Angular-Momentum Coupled Bose-Einstein Condensate
Ground-State Phase Diagram of a Spin-Orbital-Angular-Momentum Coupled Bose-Einstein Condensate Open
By inducing a Raman transition using a pair of Gaussian and Laguerre-Gaussian laser beams, we realize a Rb87 condensate whose orbital angular momentum (OAM) and its internal spin states are coupled. By varying the detuning and the coupling…
View article: Observation of Atomic Dynamic Behaviors in the Evaporative Cooling by In-Situ Imaging the Plugged Hole of Ultracold Atoms
Observation of Atomic Dynamic Behaviors in the Evaporative Cooling by In-Situ Imaging the Plugged Hole of Ultracold Atoms Open
Optical absorption imaging has become a common technique for detecting the\ndensity distribution of ultracold atoms. The defocus effect generally produces\nartificial spatial structures in the obtained images, which confuses our\nunderstan…
View article: Contact Theory for Spin-Orbit-Coupled Fermi Gases
Contact Theory for Spin-Orbit-Coupled Fermi Gases Open
We develop the contact theory for spin-orbit-coupled Fermi gases. By using a perturbation method, we derive analytically the universal two-body behavior at short distance, which does not depend on the short-range details of interatomic pot…
View article: Production of rubidium Bose-Einstein condensate in an optically-plugged magnetic quadrupole trap
Production of rubidium Bose-Einstein condensate in an optically-plugged magnetic quadrupole trap Open
We have experimentally produced rubidium Bose-Einstein condensate in an optically-plugged magnetic quadrupole (OPQ) trap. A far blue-detuned focused laser beam with a wavelength of 532 nm is plugged in the center of the magnetic quadrupole…