Qi Zhou
Purdue University
Ultracold atomPhysicsStatistical physicsLattice (order)SuperfluidityCondensed matter physicsCoupling (physics)Bose–Einstein condensateFermionMomentumQuantum mechanicsGround stateQuantum phase transitionClassical mechanicsBosonSpin-½QuantumOptical lattice
87Publications
17H-index
1,040Citations
Publications 63
Newest
#1Chenwei LvH-Index: 5
#2Ren ZhangH-Index: 8
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,...
1 Citations
#1Ren Zhang (Xi'an Jiaotong University)H-Index: 8
#2Yangqian YanH-Index: 9
Last. Qi ZhouH-Index: 17
view all 3 authors...
By engineering laser-atom interactions, both Hall ribbons and Hall cylinders as fundamental theoretical tools in condensed matter physics have recently been synthesized in laboratories. Here, we show that turning a synthetic Hall ribbon into a synthetic Hall cylinder could naturally lead to localization. Unlike a Hall ribbon, a Hall cylinder hosts an intrinsic lattice, which arises due to the periodic boundary condition in the azimuthal direction, in addition to the external periodic potential i...
1 CitationsSource
#1Chenwei LvH-Index: 5
#2Ren Zhang (Xi'an Jiaotong University)H-Index: 8
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...
7 CitationsSource
#1Chuan-Hsun LiH-Index: 4
#2Yangqian YanH-Index: 9
Last. Yong P. ChenH-Index: 64
view all 7 authors...
#1Changyuan LyuH-Index: 2
#2Qi Zhou (Purdue University)H-Index: 17
Particle-wave duality has allowed physicists to establish atomic interferometers as celebrated complements to their optical counterparts in a broad range of quantum devices. However, interactions naturally lead to decoherence and have been considered as a longstanding obstacle in implementing atomic interferometers in precision measurements. Here, we show that interactions lead to dynamical quantum phase transitions between Schr\"{o}dinger's cats in an atomic interferometer. These transition poi...
Source
#1Mingyuan He (CUHK: The Chinese University of Hong Kong)H-Index: 3
#2Qi Zhou (Purdue University)H-Index: 17
In quasi-one- or quasi-two-dimensional traps with strong transverse confinements, quantum gases behave like strictly one- or two-dimensional systems at large length scales. However, at short distance, the two-body scattering intrinsically has three-dimensional characteristics such that an exact description of any universal thermodynamic relation requires three-dimensional contacts, no matter how strong the confinement is. A fundamental question arises as to whether one- or two-dimensional contac...
4 CitationsSource
#1Changyuan LyuH-Index: 2
#2Sayan ChoudhuryH-Index: 6
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...
3 CitationsSource
#1Chuan-Hsun LiH-Index: 4
#2Yangqian YanH-Index: 9
Last. Yong P. ChenH-Index: 64
view all 6 authors...