A5082923312- Cold Atom Physics and Bose-Einstein Condensates
- Strong Light-Matter Interactions
- Quantum, superfluid, helium dynamics
- Quantum and electron transport phenomena
- Quantum many-body systems
- Force Microscopy Techniques and Applications
- Advanced Physical and Chemical Molecular Interactions
- Atomic and Subatomic Physics Research
- Quantum Information and Cryptography
- Quantum optics and atomic interactions
- Physics of Superconductivity and Magnetism
- Quantum chaos and dynamical systems
Purdue University West Lafayette
2020
Hong Kong University of Science and Technology
2019-2020
University of Hong Kong
2019-2020
Chinese University of Hong Kong
2016-2019
A unique feature of ultracold atoms is the separation length scales, ${r}_{0}\ensuremath{\ll}{k}_{F}^{\ensuremath{-}1}$, where ${k}_{F}$ and ${r}_{0}$ are Fermi momentum characterizing average particle distance range interaction between atoms, respectively. For $s$-wave scattering, Shina Tan discovered that such diluteness leads to universal thermodynamic relations governed by contact. Here, we show concept contact can be generalized an arbitrary partial-wave scattering. Contact all...
Understanding the effects of spin-orbit coupling (SOC) and many-body interactions on spin transport is important in condensed matter physics spintronics. This topic has been intensively studied for carriers such as electrons but barely explored charge-neutral bosonic quasiparticles (including their condensates), which hold promises coherent over macroscopic distances. Here, we explore synthetic SOC (induced by optical Raman coupling) atomic an Bose-Einstein condensate (BEC), where...
The realization of ultracold polar molecules in laboratories has pushed physics and chemistry to new realms. In particular, these offer scientists unprecedented opportunities explore chemical reactions the regime where quantum effects become profound. However, a key question about how two-body losses depend on correlations interacting many-body systems remains open so far. Here, we present number universal relations that directly connect other physical observables, including momentum...
Contact has been well established as an important quantity to govern dilute quantum systems, in which the pairwise correlation at short distance traces a broad range of thermodynamic properties. So far, most studies have focused on contact individual angular momentum channels. Here we point out that, complete description general should be defined matrix. Whereas diagonal terms such matrix include all partial wave scatterings, off-diagonal characterize coherence asymptotic function space and...
In quasi-one- or quasi-two-dimensional traps with strong transverse confinements, quantum gases behave like strictly one- two-dimensional systems at large length scales. However, short distance, the two-body scattering intrinsically has three-dimensional characteristics such that an exact description of any universal thermodynamic relation requires contacts, no matter how confinement is. A fundamental question arises as to whether which were originally defined for one two dimensions, are...
The length scale separation in dilute quantum gases quasi-one-dimensional or quasi-two-dimensional traps has spatially divided the system into two distinct regimes. Whereas universal relations defined strict one dimensions apply a that is much larger than characteristic of transverse confinements, physical observables short distances are inevitably governed by three-dimensional contacts. Here, we show p-wave contacts different scales intrinsically connected relation, which depends on simple...
Physical systems in reduced dimensions exhibit intriguing properties. For instance, the dependences of two-body and many-body physics on scattering lengths are distinct from their counterparts three dimensions. Whereas many studies ultracold atoms molecules have been focusing closed systems, losses may occur such systems. Here, we show that inelastic loss rate can be expressed universal relations governed by contacts. These correlate decay with other physical observables at zero finite...
Abstract Recent experimental developments have allowed physicists to freeze molecules' motion down an ultracold temperature regime where quantum effects become profound. Furthermore, each molecule can be precisely prepared at chosen internal states and the mutual interactions between molecules are also highly tunable. As such, emerged as a powerful platform in multiple disciplines across physics chemistry. Meanwhile, grand challenge exists how losses of depend on many‐body environment. In...
The realization of ultracold polar molecules in laboratories has pushed both physics and chemistry to new realms. In particular, these offer scientists unprecedented opportunities explore chemical reactions the regime where quantum effects become profound. However, a key question about how two-body losses depend on correlations an interacting many-body system remains open so far. Here, we present number universal relations that directly connect other physical observables, including momentum...