74 citations · 201 across the 24 of their papers we have counts for
26 papers
Bosonic unstructured search: quantum enhancement without entanglement
Yu-Xin Wang, Erfan Abbasgholinejad, Supratik Sarkar +4
We consider unstructured search using multimode bosonic quantum systems under energy constraints. The task is to locate an unknown marked mode among possibilities using arbitra…
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…
Bosonic codes from compact phase spaces
David Roberts, Aaron Slipper, Alireza Parhizkar +2
We present the algebraic structure of bosonic quantum error-correcting codes on genus-two Riemann surfaces. We explicitly construct the code words as automorphic forms and analytic…
Prethermal cooling with many-body quantum quenches
Jacob F. Steiner, Mohammad Hafezi, Stefan Kehrein +1
Many-body quantum quenches are typically associated with heating. In this work, we show that quantum quenches that perform positive work on the system can still lead to effective c…
Single-Shot Realization of 10000-Mode Octave-Spanning Artificial Gauge Fields
Lida Xu, Apurva Padhye, Supratik Sarkar +6
Artificial gauge fields (AGFs) enable photons and other bosons to emulate fermionic phenomena such as chiral edge transport and quantum Hall phases; however, existing theories and…
Fractional Chern insulator edges: crystalline effects and optical measurements
Yan-Qi Wang, Johannes Motruk, Andrey Grankin +1
Edge states of chiral topologically ordered phases are commonly described by chiral Luttinger liquids, effective theories that are exact only in the hydrodynamic limit. Motivated b…
Quantum Metamorphosis: Programmable Emergence and the Breakdown of Bulk-Edge Dichotomy in Multiscale Systems
Mahmoud Jalali Mehrabad, Alireza Parhizkar, Lida Xu +6
Multiscale synergy -- the interplay of a system's distinct characteristic length, time, and energy scales -- is becoming a unifying thread across many contemporary branches of scie…
Multi-timescale frequency-phase matching for high-yield nonlinear photonics
Mahmoud Jalali Mehrabad, Lida Xu, Gregory Moille +9
Integrated nonlinear photonic technologies, even with state-of-the-art fabrication with only a few nanometer geometry variations, face significant challenges in achieving wafer-sca…
Optical engineering and detection of magnetism in moiré semiconductors
Tsung-Sheng Huang, Andrey Grankin, Yu-Xin Wang +1
We present a general framework for optically inducing, controlling, and probing spin states in moiré systems. In particular, we demonstrate that applying Raman optical drives to mo…
Roadmap for Photonics with 2D Materials
F. Javier García de Abajo, D. N. Basov, Frank H. L. Koppens +145
Triggered by the development of exfoliation and the identification of a wide range of extraordinary physical properties in self-standing films consisting of one or few atomic layer…
Probing Quantum Anomalous Hall States in Twisted Bilayer WSe2 via Attractive Polaron Spectroscopy
Beini Gao, Mahdi Ghafariasl, Mahmoud Jalali Mehrabad +15
Moiré superlattices in semiconductors exhibit a rich variety of interaction-induced topological states, including quantum anomalous Hall (QAH) effects. A recent study hinted that t…
Purely electronic model for exciton-polaron formation in moiré heterostructures
Fabian Pichler, Mohammad Hafezi, Michael Knap
Understanding interactions between excitons and correlated electronic states presents a fundamental challenge in quantum many-body physics. Here, we introduce a purely electronic m…
On-chip multi-timescale spatiotemporal optical synchronization
Lida Xu, Mahmoud Jalali Mehrabad, Christopher J. Flower +7
Mode-locking mechanisms are key resources in nonlinear optical phenomena, such as micro-ring solitonic states, and have transformed metrology, precision spectroscopy, and optical c…
Enhanced Cooper pairing in nano-patterned metals
Masoud Mohammadi-Arzanagh, Andrey Grankin, Victor Galitski +1
Nano-patterning has been shown to be a powerful tool for manipulating the vibrational modes of elastic structures, with applications such as optical-mechanical mode coupling. Inspi…
Surface-mediated ultra-strong cavity coupling of two-dimensional itinerant electrons
Christian J. Eckhardt, Andrey Grankin, Dante M. Kennes +5
Engineering phases of matter in cavities requires effective light-matter coupling strengths that are on the same order of magnitude as the bare system energetics, coined the ultra-…
Giant enhancement of exciton diffusion near an electronic Mott insulator
Pranshoo Upadhyay, Daniel G. Suárez-Forero, Tsung-Sheng Huang +9
Bose-Fermi mixtures naturally appear in various physical systems. In semiconductor heterostructures, such mixtures can be realized, with bosons as excitons and fermions as dopant c…
Enhanced Cooper Pairing via Random Matrix Phonons in Superconducting Grains
Andrey Grankin, Mohammad Hafezi, Victor Galitski
There is rich experimental evidence that granular superconductors and superconducting films often exhibit a higher transition temperature, , than that in bulk samples of the…
Collective optical properties of moiré excitons
Tsung-Sheng Huang, Yu-Xin Wang, Yan-Qi Wang +3
We propose that excitons in moiré transition metal dichalcogenide bilayers offer a promising platform for investigating collective radiative properties. While some of these optical…
Sub-wavelength optical lattice in 2D materials
Supratik Sarkar, Mahmoud Jalali Mehrabad, Daniel G. Suárez-Forero +9
Recently, light-matter interaction has been vastly expanded as a control tool for inducing and enhancing many emergent non-equilibrium phenomena. However, conventional schemes for…
Near-Visible Topological Edge States in a Silicon Nitride Platform
David Sharp, Christopher Flower, Mahmoud Jalali Mehrabad +5
Demonstrations of topological photonics have so far largely been confined to infrared wavelengths where imaging technology and access to low-dimensional quantum materials are both…
Long-lived Topological Flatband Excitons in Semiconductor Moiré Heterostructures: a Bosonic Kane-Mele Model Platform
Ming Xie, Mohammad Hafezi, Sankar Das Sarma
Moiré superlattices based on two-dimensional transition metal dichalcogenides (TMDs) have emerged as a highly versatile and fruitful platform for exploring correlated topological e…
Dynamic control of 2D non-Hermitian photonic corner states in synthetic dimensions
Xinyuan Zheng, Mahmoud Jalali Mehrabad, Jonathan Vannucci +5
Non-Hermitian models describe the physics of ubiquitous open systems with gain and loss. One intriguing aspect of non-Hermitian models is their inherent topology that can produce i…
Observation of topological frequency combs
Christopher J. Flower, Mahmoud Jalali Mehrabad, Lida Xu +8
On-chip generation of optical frequency combs using nonlinear ring resonators has opened the route to numerous novel applications of combs that were otherwise limited to mode-locke…
Energy diffusion in weakly interacting chains with fermionic dissipation-assisted operator evolution
En-Jui Kuo, Brayden Ware, Peter Lunts +2
Interacting lattice Hamiltonians at high temperature generically give rise to energy transport governed by the classical diffusion equation; however, predicting the rate of diffusi…