164 citations · 1.1k across the 29 of their papers we have counts for
29 papers
Coulomb-induced synchronization of intersubband coherences in highly doped quantum wells and the formation of giant collective resonances
Mikhail Tokman, Maria Erukhimova, Yongrui Wang +1
Many-body Coulomb interactions drastically modify the optical response of highly doped semiconductor quantum wells leading to a merger of all intersubband transition resonances int…
Dissipation-driven formation of entangled dark states in strongly-coupled inhomogeneous many-qubit systems in solid-state nanocavities
Mikhail Tokman, Alex Behne, Brandon Torres +3
We study quantum dynamics of many-qubit systems strongly coupled to a quantized electromagnetic cavity field in the presence of decoherence and dissipation for both fermions and ca…
Generation of entangled photons via parametric down-conversion in semiconductor lasers and integrated quantum photonic systems
Mikhail Tokman, Yongrui Wang, Qianfan Chen +2
We propose and design a high-brightness, ultra-compact electrically pumped GaSb-based laser source of entangled photons generated by mode-matched intracavity parametric down-conver…
Quantum dynamics of open many-qubit systems strongly coupled to a quantized electromagnetic field in dissipative cavities
Mikhail Tokman, Qianfan Chen, Maria Erukhimova +2
We study quantum dynamics of many-qubit systems strongly coupled to a quantized electromagnetic cavity mode, in the presence of decoherence and dissipation for both fermions and ca…
Self-starting Harmonic Comb Emission in THz Quantum Cascade Lasers
Andres Forrer, Yongrui Wang, Mattias Beck +3
Harmonic comb state has proven to be emerging in quantum cascade lasers and promoted by an interplay between parametric gain and spatial hole burning. We report here on robust, pur…
Dynamics and control of entangled electron-photon states in nanophotonic systems with time-variable parameters
Qianfan Chen, Yongrui Wang, Sultan Almutairi +3
We study the dynamics of strongly coupled nanophotonic systems with time-variable parameters. The approximate analytic solutions are obtained for a broad class of open quantum syst…
Relaxation operator for quasiparticles in a solid
Maria Erukhimova, Yongrui Wang, Mikhail Tokman +1
Popular models of the phenomenological relaxation operators that are widely used in the master equation formalism for open condensed-matter systems have significant flaws ranging f…
Generation and dynamics of entangled fermion-photon-phonon states in nanocavities
Mikhail Tokman, Maria Erukhimova, Yongrui Wang +2
We develop the analytic theory describing the formation and evolution of entangled quantum states for a fermionic quantum emitter coupled to a quantized electromagnetic field in a…
Harmonic frequency combs in quantum cascade lasers: time-domain and frequency-domain theory
Yongrui Wang, Alexey Belyanin
Harmonic frequency combs, in which the lasing modes are separated by a period of tens of free spectral ranges from each other, have been recently discovered in quantum cascade lase…
Semiconductor ring laser frequency combs induced by phase turbulence
Marco Piccardo, Benedikt Schwarz, Dmitry Kazakov +10
Semiconductor ring lasers are miniaturized devices that operate on clockwise and counterclockwise modes. These modes are not coupled in the absence of intracavity reflectors, which…
Laser radio transmitter
Marco Piccardo, Michele Tamagnone, Benedikt Schwarz +8
Since the days of Hertz, radio transmitters have evolved from rudimentary circuits emitting around 50 MHz to modern ubiquitous Wi-Fi devices operating at gigahertz radio bands. As…
Second harmonic generation in graphene dressed by a strong terahertz field
Mikhail Tokman, Sergei B. Bodrov, Yuri A. Sergeev +5
We observe enhanced second-harmonic generation in monolayer graphene in the presence of an ultra-strong terahertz field pulse with a peak amplitude of 250 kV/cm. This is a strongly…
Difference frequency generation of surface plasmon-polaritons in Landau quantized graphene
A. Ryan Kutayiah, Mikhail Tokman, Yongrui Wang +1
We develop a rigorous quantum-mechanical theory of the nonlinear optical process of difference frequency generation of surface plasmon-polaritons in Landau-quantized graphene. Alth…
Enhancement of the spontaneous emission in subwavelength quasi-two-dimensional waveguides and resonators
Mikhail Tokman, Zhongqu Long, Sultan AlMutairi +3
We consider a quantum-electrodynamic problem of the spontaneous emission from a two-dimensional (2D) emitter, such as a quantum well or a 2D semiconductor, placed in a quasi-2D wav…
Purcell enhancement of the parametric down-conversion in two-dimensional nonlinear materials
Mikhail Tokman, Zhongqu Long, Sultan AlMutairi +4
Ultracompact nonlinear optical devices utilizing two-dimensional (2D) materials and nanostructures are emerging as important elements of photonic circuits. Integration of the nonli…
Watt-level widely tunable single-mode emission by injection-locking of a multimode Fabry-Perot quantum cascade laser
Paul Chevalier, Marco Piccardo, Sajant Anand +7
Free-running Fabry-Perot lasers normally operate in a single-mode regime until the pumping current is increased beyond the single-mode instability threshold, above which they evolv…
Self-starting harmonic frequency comb generation in a quantum cascade laser
Dmitry Kazakov, Marco Piccardo, Yongrui Wang +7
Optical frequency combs establish a rigid phase-coherent link between microwave and optical domains and are emerging as high-precision tools in an increasing number of applications…
Magneto-polaritons in Weyl semimetals in a strong magnetic field
Zhongqu Long, Yongrui Wang, Maria Erukhimova +2
Exotic topological and transport properties of Weyl semimetals generated a lot of excitement in the condensed matter community. Here we show that Weyl semimetals in a strong magnet…
Second-order nonlinear optical response of graphene
Yongrui Wang, Mikhail Tokman, Alexey Belyanin
Although massless Dirac fermions in graphene constitute a centrosymmetric medium for in-plane excitations, their second-order nonlinear optical response is nonzero if the effects o…
Stability of High-Density Two-Dimensional Excitons against a Mott Transition in High Magnetic Fields Probed by Coherent Terahertz Spectroscopy
Qi Zhang, Yongrui Wang, Weilu Gao +5
We have performed time-resolved terahertz absorption measurements on photoexcited electron-hole pairs in undoped GaAs quantum wells in magnetic fields. We probed both unbound- and…
Dicke Superradiance in Solids
Kankan Cong, Qi Zhang, Yongrui Wang +3
Recent advances in optical studies of condensed matter have led to the emergence of phenomena that have conventionally been studied in the realm of quantum optics. These studies ha…
Laser-driven parametric instability and generation of entangled photon-plasmon states in graphene and topological insulators
Mikhail Tokman, Yongrui Wang, Ivan Oladyshkin +2
We show that a strong infrared laser beam obliquely incident on graphene can experience a parametric instability with respect to decay into lower-frequency (idler) photons and THz…
Active mode locking of quantum cascade lasers operating in external ring cavity
D. G. Revin, M. Hemingway, Y. Wang +2
Stable ultrashort light pulses and frequency combs generated by mode-locked lasers have many important applications including high-resolution spectroscopy, fast chemical detection…
Valley entanglement of excitons in monolayers of transition-metal dichalcogenides
Mikhail Tokman, Yongrui Wang, Alexey Belyanin
We show that excitons and free carriers in K and K' valleys of transition metal dichalcogenide monolayers can be entangled with respect to their valley degree of freedom by absorbi…