242 citations · 523 across the 24 of their papers we have counts for
25 papers
Terahertz cavity hybridization of collective proteins vibrations
Elsa Perez-Martin, Laurent Bonnet, Songlin Fang +8
Hybrid light-matter states have transformed photonics, yet their realization with driven collective vibrations in biological systems remains an open challenge. Here we show that op…
Entangled Photons Enabled Ultrafast Stimulated Raman Spectroscopy for Molecular Dynamics
Joel Jiahao Fan, Zhe-Yu Jeff Ou, Zhedong Zhang
Quantum entanglement has emerged as a great resource for interactions between molecules and radiation. We propose a new paradigm of stimulated Raman scattering with entangled photo…
Multidimensional Coherent Spectroscopy of Molecular Polaritons: Langevin Approach
Zhedong Zhang, Xiaoyu Nie, Dangyuan Lei +1
We present a microscopic theory for nonlinear optical spectroscopy of N molecules in an optical cavity. A quantum Langevin analytical expression is derived for the time- and freque…
Multiple-Photon Resonance Enabled Quantum Interference in Emission Spectroscopy of N_2^+
Xiang Zhang, Qi Lu, Yalei Zhu +13
Quantum interference occurs frequently in the interaction of laser radiation with materials, leading to a series of fascinating effects such as lasing without inversion, electromag…
Quantum Fluctuations and Coherence of a Molecular Polariton Condensate
Zhedong Zhang, Shixuan Zhao, Dangyuan Lei
A full quantum theory beyond the mean-field regime is developed for an exciton polariton condensate, to gain a complete understanding of quantum fluctuations. We find analytical so…
Deep-learned speckle pattern and its application to ghost imaging
Xiaoyu Nie, Haotian Song, Wenhan Ren +4
In this paper, we present a method for speckle pattern design using deep learning. The speckle patterns possess unique features after experiencing convolutions in Speckle-Net, our…
Entangled Photons Enabled Time- and Frequency-Resolved Coherent Raman Spectroscopy in Condensed Phase Molecules
Zhedong Zhang, Tao Peng, Xiaoyu Nie +2
We develop an ultrafast frequency-resolved Raman spectroscopy with entangled photons for polyatomic molecules in condensed phases, to probe the electronic and vibrational coherence…
Universal Quantum Fluctuation-Dissipation Relation for Systems Far From Equilibrium
Zhedong Zhang, Xuanhua Wang, Jin Wang
Fluctuations associated with relaxations in far-from-equilibrium regime is of fundamental interest for a large variety of systems within broad scales. Recent advances in techniques…
Nonlinear Spin Currents
Jayakrishnan M. P. Nair, Zhedong Zhang, Marlan O. Scully +1
The cavity mediated spin current between two ferrite samples has been reported by Bai et. al. [Phys. Rev. Lett. 118, 217201 (2017)]. This experiment was done in the linear regime o…
Excitation Energy Transfer under Strong Laser Drive
Xuanhua Wang, Zhedong Zhang, Jin Wang
Strong molecule-light interaction enables the control of molecular structures and dynamical processes. A model with strong laser drive is proposed to greatly enhance the intermolec…
Quantum entanglement between two magnon modes via Kerr nonlinearity
Zhedong Zhang, Marlan O. Scully, Girish S. Agarwal
We propose a scheme to entangle two magnon modes via Kerr nonlinear effect when driving the systems far-from-equilibrium. We consider two macroscopic yttrium iron garnets (YIGs) in…
Quantum fluctuations in Fröhlich condensate of molecular vibrations driven far from equilibrium
Zhedong Zhang, Girish S. Agarwal, Marlan O. Scully
Fröhlich discovered the remarkable condensation of polar vibrations into the lowest frequency mode when the system is pumped externally. For a full understanding of the Fröhlich co…
Enhanced molecular chiral signals via molecular coherence
Tuguldur Kh. Begzjav, Zhedong Zhang, Marlan O. Scully +1
One of the most widely used chiroptical spectroscopic methods for studying chiral molecules is Raman optical activity; however, the chiral Raman optical activity signal is extremel…
Local fluctuations of vibrational polaritons monitored by two-dimensional infrared spectroscopy
Zhedong Zhang, Kai Wang, Zhenhuan Yi +2
We study the collective behavior of molecules placed in an infrared (IR) microcavity, incorporating the local fluctuations, i.e., dynamical disorder. The cooperative feature in vib…
Nonequilibrium-induced enhancement of dynamical quantum coherence and entanglement of spin arrays
Zhedong Zhang, Hongchen Fu, Jin Wang
The random magnetic field produced by nuclear spins has long been viewed as the dominating source of decoherence in the quantum-dot based spins. Here we obtain in both exact and an…
Utilizing Microcavities to Suppress Third-order Cascades in Fifth-order Raman Spectra
Zhedong Zhang, Kochise Bennett, Vladimir Chernyak +1
Nonlinear optical signals in the condensed phase are often accompanied by sequences of lower-order processes, known as cascades, which share the same phase matching and power depen…
Shape, orientation and magnitude of the curl quantum flux, the coherence and the statistical correlations in energy transport at nonequilibrium steady state
Zhedong Zhang, Jin Wang
We provide a quantitative description of the nonequilibriumness based on the model of coupled oscillators interacting with multiple energy sources. This can be applied to the study…
Curl flux, coherence, and population landscape of molecular systems: Nonequilibrium quantum steady state, energy (charge) transport, and thermodynamics
Zhedong Zhang, Jin Wang
We established a theoretical framework in terms of the curl flux, population landscape, and coherence for non-equilibrium quantum systems at steady state, through exploring the ene…
Vibrational and coherence dynamics of molecules
Zhedong Zhang, Jin Wang
We {\it analytically} investigate the population and coherence dynamics and relaxations in the vibrational energy transport in molecules. The corresponding two time scales an…
Origin of long-lived coherence and excitation dynamics in pigment-protein complexes
Zhedong Zhang, Jin Wang
We explore the mechanism for the long-lived quantum coherence by considering the discrete phonon modes: these vibrational modes effectively weaken the exciton-environment interacti…
Atom transistor from the point of view of quantum nonequilibrium dynamics
Zhedong Zhang, Vanja Dunjko, Maxim Olshanii
We analyze the atom field-effect transistor scheme [J. A. Stickney, D. Z. Anderson and A. A. Zozulya, Phys. Rev. A 75, 013608 (2007)] using the standard tools of nonequlilibrium dy…
The Assistance of Molecular Vibrations on Coherent Energy Transfer in Photosynthesis from the View of Quantum Heat Engine
Zhedong Zhang, Jin Wang
Recently the quantum nature in the energy transport in solar cell and light-harvesting complexes have attracted much attention, as being triggered by the experimental observations.…
Monopole excitations of a harmonically trapped one-dimensional Bose gas from the ideal gas to the Tonks-Girardeau regime
S. Choi, V. Dunjko, Z. D. Zhang +1
Using a time-dependent modified nonlinear Schrödinger equation (m-NLSE) -- where the conventional chemical potential proportional to the density is replaced by the one inferred fro…
Breakdown of the scale invariance in the vicinity of Tonks-Girardeau gas
Z. D. Zhang, G. E. Astrakharchik, D. C. Aveline +4
In this article, we consider the monopole excitations of the harmonically trapped Bose gas in the vicinity of the Tonks-Girardeau limit. Using Girardeau's Fermi-Bose duality and su…