73 citations · 314 across the 30 of their papers we have counts for
30 papers
Information capacity of quantum statistics: Fock-state tests of a discrete binary-sequence model on cloud photonic quantum processors
Chiran Wijesundara, Octavia T. Volpe, Dejan Stojkovic +2
Our central premise is that quantum mechanics may be the statistical limit of a more fundamental discrete theory: any such theory equips a physical system with a finite information…
Scalable Photon-Mediated Two-Qubit Gates with Spectrally Noisy Quantum Emitters
Shreekanth S. Yuvarajan, W. A. Coish, David Hucul +1
When two quantum bits are coupled through a cavity, a two-qubit gate can be realized between them either in the near-resonant regime over a timescale established by the coupling st…
Spectral Diffusion Mitigation with a Laser Pulse Sequence
Kilian Unterguggenberger, Alok Gokhale, Aleksei Tsarapkin +6
The optical spectrum of a quantum system is jointly determined by the properties of the emitter and the driving field. All-optical spectral control can hence be a promising method…
Dynamics of Many-Emitter Ensembles: Probing Cooperative Evolution with Scalable Quantum Circuits
Vincent Iglesias-Cardinale, Shreekanth S. Yuvarajan, Herbert F. Fotso
Many-particle quantum systems often give rise to exotic behaviors in their nonequilibrium dynamics that are rather challenging to reveal with analytical methods or with classical c…
Disorder-Assisted Adiabaticity in Correlated Many-Particle Systems
Shang-Jie Liou, Herbert F. Fotso
We investigate how disorder affects adiabaticity in an interacting quantum system by assessing its effect on the state of the system after an interaction modulation, or interaction…
Cavity Mediated Two-Qubit Gate: Tuning to Optimal Performance with NISQ Era Quantum Simulations
Shreekanth S. Yuvarajan, Vincent Iglesias-Cardinale, David Hucul +1
A variety of photon-mediated operations are critical to the realization of scalable quantum information processing platforms and their accurate characterization is essential for th…
Dynamics away from Equilibrium of a Disordered Binary Alloy
Aly Abuelmaged, Eric Dohner, Shang-Jie Liou +1
We study the nonequilibrium dynamics of a binary disordered alloy when it is subjected to an interaction quench. Our study uses a nonequilibrium embedding scheme (DMFT+CPA) that co…
Electron transport in disordered insulating lattice under nonlinear electric field
Kunal Mozumdar, Herbert F. Fotso, Jong E. Han
Transport in disordered systems often occurs via the variable range hopping (VRH) in the dilute carrier density limit, where electrons hop between randomly distributed localized le…
Hole spin splitting in a Ge quantum dot with finite barriers
Jiawei Wang, Xuedong Hu, Herbert F Fotso
We study the low-energy spectrum of a single hole confined in a planar Ge quantum dot (QD) within the effective-mass formalism. The QD is sandwiched between two GeSi barriers of fi…
Spectral properties of disordered insulating lattice under nonlinear electric field
Kunal Mozumdar, Herbert F. Fotso, Jong E. Han
Quenched disorder in a solid state system can result in Anderson localization, where electrons are exponentially localized and the system behaves like an insulator. By solving exac…
Tunable absorption spectrum splitting in a pulse-driven three-level system
Jiawei Wang, Anthony Gullo, Kavya Velmurugan +1
When a two-level system is driven on resonance by a strong incident field, its emission spectrum is characterized by the well-known Mollow triplet. If the absorption from the excit…
Disorder Enhanced Thermalization in Interacting Many-Particle System
Chakradhar Rangi, Herbert F Fotso, Hanna Terletska +2
We introduce an extension of the non-equilibrium dynamical mean field theory to incorporate the effects of static random disorder in the dynamics of a many-particle system by integ…
Quantum Classical Algorithm for the Study of Phase Transitions in the Hubbard Model via Dynamical Mean-Field Theory
Anshumitra Baul, Herbert F Fotso, Hanna Terletska +2
Simulating quantum many-body systems is believed to be one of the most promising applications of near-term noisy quantum computers. However, in the near term, system size limitatio…
A statistical model for quantum spin and photon number states
Sam Powers, Guangpeng Xu, Herbert Fotso +2
The most irreducible way to represent information is a sequence of two symbols. In this paper, we construct quantum states using this basic building block. Specifically, we show th…
Thermalization of a Disordered Interacting System under an Interaction Quench
Eric Dohner, Hanna Terletska, Herbert F Fotso
Although most studies of strongly correlated systems away from equilibrium have focused on clean systems, it is well known that disorder may significantly modify observed propertie…
Tuning Spectral Properties of Individual and Multiple Quantum Emitters in Noisy Environments
Herbert F Fotso
A quantum emitter in a dynamic environment may have its energy levels drift uncontrollably in time with the fluctuating bath. This can result in an emission/absorption spectrum tha…
Nonequilibrium DMFT+CPA for Correlated Disordered Systems
Eric Dohner, Hanna Terletska, Ka-Ming Tam +2
We present a solution for the nonequilibrium dynamics of an interacting disordered system. The approach adapts the combination of the equilibrium dynamical mean field theory (DMFT)…
Bridging the Gap Between the Transient and the Steady State of a Nonequilibrium Quantum System
Herbert F. Fotso, Eric Dohner, Alexander Kemper +1
Many-body quantum systems in nonequilibrium remain one of the frontiers of many-body physics. While there has been significant advances in describing the short-time evolution of th…
Beyond Quantum Cluster Theories: Multiscale Approaches for Strongly Correlated Systems
Herbert F Fotso, Ka-Ming Tam, Juana Moreno
The degrees of freedom that confer to strongly correlated systems their many intriguing properties also render them fairly intractable through typical perturbative treatments. For…
Characterizing the Nonequilibrium Dynamics of Field-Driven Correlated Quantum Systems
Herbert F. Fotso, James K. Freericks
Recent experimental advances in ultrafast phenomena have triggered renewed interest in the dynamics of correlated quantum systems away from equilibrium. We review nonequilibrium dy…
Pulse-Enhanced Two-Photon Interference with Solid State Quantum Emitters
Herbert F Fotso
The ability to entangle distant quantum nodes is essential for the construction of quantum networks and for quantum information processing. For solid-state quantum emitters used as…
Emission and Absorption Spectrum of Pulse-Driven Two-Level Systems in Dynamic Environments
Herbert F Fotso
We study the emission spectrum and absorption spectrum of a quantum emitter when it is driven by various pulse sequences. We consider the Uhrig sequence of pulses, the period…
Absorption Spectrum of a Two-Level System Subjected to a Periodic Pulse Sequence
H. F. Fotso, V. V. Dobrovitski
We investigate how the quantum control of a two-level system (TLS) coupled to photons can modify and tune the TLS's photon absorption spectrum. Tuning and controlling the emission…
Suppressing Spectral Diffusion of the Emitted Photons with Optical Pulses
H. F. Fotso, A. E. Feiguin, D. D. Awschalom +1
In many quantum architectures the solid-state qubits, such as quantum dots or color centers, are interfaced via emitted photons. However, the frequency of photons emitted by solid-…