Chenwei Lv
Purdue University
Optical physicsWave packetPoincaré disk modelCurved spacePhysicsQuantum dynamicsQuantum chemistryHeisenberg limitObservableMoleculeTheoretical physicsSymmetry (physics)Discrete time and continuous timeHyperbolic coordinatesMomentumQuantum mechanicsRealization (systems)Degenerate energy levelsParticle numberClassical mechanicsQuantumHermitian matrix
10Publications
5H-index
19Citations
Publications 8
Newest
#1Chenwei LvH-Index: 5
#2Ren ZhangH-Index: 11
Last. Qi ZhouH-Index: 17
view all 3 authors...
Quantum systems are often characterized into two distinct categories, Hermitian and non-Hermitian ones. Extraordinary properties of non-Hermitian systems, ranging from the non-Hermitian skin effect to the supersensitivity to boundary conditions and perturbations, have been widely explored. Whereas these intriguing phenomena have been considered peculiar to non-Hermitian systems, we show that many of them originate from a duality between non-Hermitian models in flat spaces and their counterparts,...
#1Mingyuan He (Applied Research Institute–Jerusalem)H-Index: 2
#2Chenwei Lv (Purdue University)H-Index: 5
Last. Qi Zhou (Purdue University)H-Index: 17
view all 4 authors...
The realization of ultracold polar molecules in laboratories has pushed physics and chemistry to new realms. In particular, these polar molecules offer scientists unprecedented opportunities to explore chemical reactions in the ultracold regime where quantum effects become profound. However, a key question about how two-body losses depend on quantum correlations in interacting many-body systems remains open so far. Here, we present a number of universal relations that directly connect two-body l...
Source
#1Chenwei LvH-Index: 5
#2Ren Zhang (Xi'an Jiaotong University)H-Index: 11
Last. Qi Zhou (Purdue University)H-Index: 17
view all 3 authors...
Though the celebrated spin echoes have been widely used to reverse quantum dynamics, they are not applicable to systems whose constituents are beyond the control of the su(2) algebra. Here, we design echoes to reverse quantum dynamics of breathers in three-dimensional unitary fermions and two-dimensional bosons and fermions with contact interactions, which are governed by an underlying su(1,1) algebra. Geometrically, SU(1,1) echoes produce closed trajectories on a single or multiple Poincare dis...
Source
#1Changyuan LyuH-Index: 2
#2Chenwei LvH-Index: 5
Last. Qi Zhou (Purdue University)H-Index: 17
view all 3 authors...
Geometry may arise from quantum systems in an unprecedented means such as the gauge theory/gravity dual. Whereas emergent geometries often occur in strongly correlated systems, one could ask whether simple quantum systems may also be used to unfold intriguing underlying geometries. Here, we show that quantum dynamics of Bose-Einstein condensates in the weakly interacting regime can be geometrized by a Poincar\'e disk. Each point on such a disk represents a thermofield double state, the fidelity ...
Source
#1Ren Zhang (Xi'an Jiaotong University)H-Index: 11
#2Chenwei LvH-Index: 5
Last. Qi Zhou (Purdue University)H-Index: 17
view all 4 authors...
Engineering lattice models with tailored inter-site tunneling and onsite energies could synthesize essentially arbitrary Riemannian surfaces with highly tunable local curvatures. As examples, we point out how to realize a discrete synthetic Poincare half-plane and Poincare disk, using two-dimensional lattices in flat planes. In such hyperbolic surfaces, the infinitely degenerate eigenstates for any nonzero eigenenergies exhibit a discrete scaling law, as analogous to the Efimov states. Furthermo...
#1Changyuan Lyu (Purdue University)H-Index: 2
#2Sayan Choudhury (Purdue University)H-Index: 8
Last. Qi Zhou (Purdue University)H-Index: 17
view all 5 authors...
This work shows that an all-to-all interaction delivers a discrete time crystal that is robust against spatially inhomogeneous perturbations.
Source
#1Chenwei LvH-Index: 5
#2Changyuan LyuH-Index: 2
Last. Qi ZhouH-Index: 17
view all 4 authors...
#1Changyuan LyuH-Index: 2
#2Sayan ChoudhuryH-Index: 8
Last. Qi ZhouH-Index: 17
view all 5 authors...
A discrete time crystal (DTC) repeats itself with a rigid rhythm, mimicking a ticking clock set by the interplay between its internal structures and an external force. DTCs promise profound applications in precision time-keeping and other quantum techniques. However, it has been facing a grand challenge of thermalization. The periodic driving supplying the power may ultimately bring DTCs to thermal equilibrium and destroy their coherence. Here, we show that an all-to-all interaction delivers a D...
Source
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