19 citations · 74 across the 15 of their papers we have counts for
17 papers
Optical observation of interlayer spin correlation
Akiyoshi Park, Pranshoo Upadhyay, Andrey Grankin +16
Spin correlations govern numerous collective behaviors of quantum materials, underpinning exotic phenomena such as unconventional superconductivity and topological magnetism. In la…
Interlayer dark excitons in a van der Waals heterostructure
Rundong Ma, Konstantin Davydov, Liuxin Gu +9
Interlayer excitons in transition metal dichalcogenide (TMD) heterostructures exhibit long lifetimes and long-range transport, making them promising for excitonic devices and quant…
Microscopic Theory of Drag in a Bose Condensate Interacting with a Moving Reservoir
Hassan Alnatah, Shuang Liang, Shouvik Mukherjee +3
We derive a microscopic theory of drag for a Bose-Einstein condensate interacting with a moving reservoir. Starting from interactions between a condensate and a drifting fermionic…
Temporal hopping dynamics in exciton-polariton condensation
Elena Rozas, Wojciech Bukalski, Yannik Brune +9
Polariton condensates provide a versatile platform for exploring non-equilibrium phase transitions and collective phenomena in open quantum systems. Near the condensation threshold…
Controlled Switching of Bose-Einstein Condensation in a Mixture of Two Species of Polaritons
Hassan Alnatah, Shuang Liang, Qiaochu Wan +5
We report temperature-dependent switching between lower and upper polariton condensation in a GaAs/AlGaAs microcavity when both of these species have comparable populations in a mi…
Mirror-mediated long-range coupling and robust phase locking of spatially separated exciton-polariton condensates
Shuang Liang, Hassan Alnatah, Qi Yao +7
Lattice arrays are valuable simulators for complex mathematical problems, but physical systems typically allow only short-range coupling. We demonstrate a method for independently…
Optical probes of coherence in two dimensional Bose gases of polaritons
Joseph Jachinowski, Hassan Alnatah, David W. Snoke +1
Due to their photonic components, exciton-polariton systems provide a convenient platform to study the coherence properties of weakly-interacting Bose gases. In particular, optical…
Strong coupling of polaritons at room temperature in a GaAs/AlGaAs structure
Hassan Alnatah, Shuang Liang, Qiaochu Wan +7
We report direct measurement of the dispersion relation of polaritons in GaAs/AlGaAs microcavity structures at room temperature, which clearly shows that the polaritons are in the…
Targeted Polariton Flow Through Tailored Photonic Defects
Elena Rozas, Yannik Brune, Ken West +6
In non-Hermitian open quantum systems, such as polariton condensates, local tailoring of gains and losses opens up an interesting possibility to realize functional optical elements…
Quantum coherence of a long-lifetime exciton-polariton condensate
Yannik Brune, Elena Rozas, Ken West +6
In recent years, quantum information science has made significant progress, leading to a multitude of quantum protocols for the most diverse applications. States carrying resources…
Bose-Einstein condensation of polaritons at room temperature in a GaAs/AlGaAs structure
Hassan Alnatah, Qi Yao, Qiaochu Wan +5
We report the canonical properties of Bose-Einstein condensation of polaritons, seen previously in many low-temperature experiments, at room temperature in a GaAs/AlGaAs structure.…
Measurement of exciton fraction of microcavity exciton-polaritons using transfer-matrix modeling
Jonathan Beaumariage, Zheng Sun, Hassan Alnatah +9
We present a careful calibration of the exciton fraction of polaritons in high- (), long-lifetime ( ps), GaAs/AlGaAs microcavities.This is a crucial para…
Bose condensation of upper-branch exciton-polaritons in a transferrable microcavity
Xingzhou Chen, Hassan Alnatah, Danqun Mao +9
Exciton-polaritons are composite bosonic quasiparticles arising from the strong coupling of excitonic transitions and optical modes. Exciton-polaritons have triggered wide explorat…
Coherence measurements of polaritons in thermal equilibrium reveal a power law for two-dimensional condensates
Hassan Alnatah, Qi Yao, Jonathan Beaumariage +7
We have created a spatially homogeneous polariton condensate in thermal equilibrium, up to very high condensate fraction. Under these conditions, we have measured the coherence as…
Persistent, controllable circulation of a polariton ring condensate
Q. Yao, P. Comaron, H. A. Alnatah +7
Persistent circulation is a canonical effect of superfluidity. In previous experiments, quantized circulation has been observed in polariton condensates, usually far from equilibri…
Critical fluctuations in a confined driven-dissipative quantum condensate
Hassan Alnatah, Paolo Comaron, Shouvik Mukherjee +6
Phase fluctuations determine the low-energy properties of quantum condensates. However, at the condensation threshold, both density and phase fluctuations are relevant. While stron…
Pushing Photons with Electrons: Observation of the Polariton Drag Effect
D. M. Myers, Q. Yao, H. Alnatah +6
We show the direct effect of free electrons colliding with polaritons, changing their momentum. The result of this interaction of the electrons with the polaritons is a change in t…