112 citations · 787 across the 17 of their papers we have counts for
17 papers
Barren plateaus in quantum tensor network optimization
Enrique Cervero Martín, Kirill Plekhanov, Michael Lubasch
We analyze the barren plateau phenomenon in the variational optimization of quantum circuits inspired by matrix product states (qMPS), tree tensor networks (qTTN), and the multisca…
Variational quantum amplitude estimation
Kirill Plekhanov, Matthias Rosenkranz, Mattia Fiorentini +1
We propose to perform amplitude estimation with the help of constant-depth quantum circuits that variationally approximate states during amplitude amplification. In the context of…
Interaction-stabilized topological magnon insulator in ferromagnets
Alexander Mook, Kirill Plekhanov, Jelena Klinovaja +1
Condensed matter systems admit topological collective excitations above a trivial ground state, an example being Chern insulators formed by Dirac bosons with a gap at finite energi…
Quadrupole spin polarization as signature of second-order topological superconductors
Kirill Plekhanov, Niclas Müller, Yanick Volpez +4
We study theoretically second-order topological superconductors characterized by the presence of pairs of zero-energy Majorana corner states. We uncover a quadrupole spin polarizat…
Majorana bound states in topological insulators with hidden Dirac points
Ferdinand Schulz, Kirill Plekhanov, Daniel Loss +1
We address the issue whether it is possible to generate Majorana bound states at the magnetic-superconducting interface in two-dimensional topological insulators with hidden Dirac…
Magnetically-Confined Bound States in Rashba Systems
Flavio Ronetti, Kirill Plekhanov, Daniel Loss +1
A Rashba nanowire is subjected to a magnetic field that assumes opposite signs in two sections of the nanowire, and, thus, creates a magnetic domain wall. The direction of magnetic…
Hinge states in a system of coupled Rashba layers
Kirill Plekhanov, Flavio Ronetti, Daniel Loss +1
We consider a system of stacked tunnel-coupled two-dimensional electron- and hole-gas layers with Rashba spin-orbit interactions subjected to a staggered Zeeman field. The interpla…
Floquet Second-Order Topological Superconductor Driven via Ferromagnetic Resonance
Kirill Plekhanov, Manisha Thakurathi, Daniel Loss +1
We consider a Floquet triple-layer setup composed of a two-dimensional electron gas with spin-orbit interactions, proximity coupled to an s-wave superconductor and to a ferromagnet…
Topological proximity effects in a Haldane-graphene bilayer system
Peng Cheng, Philipp W. Klein, Kirill Plekhanov +4
We reveal a proximity effect between a topological band (Chern) insulator described by a Haldane model and spin-polarized Dirac particles of a graphene layer. Coupling weakly the t…
Valence bond fluctuations in the Kitaev spin model
Fan Yang, Kirill Plekhanov, Karyn Le Hur
We introduce valence bond fluctuations, or bipartite fluctuations associated to bond-bond correlation functions, to characterize quantum spin liquids and their entanglement propert…
Quantum purification spectroscopy
Bradraj Pandey, Kirill Plekhanov, Guillaume Roux
We discuss a protocol based on quenching a purified quantum system that allows to capture bulk spectral features. It uses an infinite temperature initial state and an interferometr…
Topological Zak Phase in Strongly-Coupled LC Circuits
Tal Goren, Kirill Plekhanov, Félicien Appas +1
We show the emergence of topological Bogoliubov bosonic excitations in the relatively strong coupling limit of an LC (inductance-capacitance) one-dimensional quantum circuit. This…
Emergent Chiral Spin State in the Mott Phase of a Bosonic Kane-Mele-Hubbard Model
Kirill Plekhanov, Ivana Vasić, Alexandru Petrescu +4
Recently, the frustrated XY model for spins-1/2 on the honeycomb lattice has attracted a lot of attention in relation with the possibility to realize a chiral spin liquid state. Th…
Driven dissipative dynamics and topology of quantum impurity systems
Karyn Le Hur, Loïc Henriet, Loïc Herviou +6
In this review, we provide an introduction and overview to some more recent advances in real-time dynamics of quantum impurity models and their realizations in quantum devices. We…
Floquet Engineering of Haldane Chern Insulators and Chiral bosonic phase transitions
Kirill Plekhanov, Guillaume Roux, Karyn Le Hur
The realization of synthetic gauge fields has attracted a lot of attention recently in relation with periodically driven systems and the Floquet theory. In ultra-cold atom systems…
On-chip microwave-to-optical quantum coherent converter based on a superconducting resonator coupled to an electro-optic microresonator
Clément Javerzac-Galy, Kirill Plekhanov, Nathan Bernier +3
We propose a device architecture capable of direct quantum electro-optical conversion of microwave to optical photons. The hybrid system consists of a planar superconducting microw…
Many-Body Quantum Electrodynamics Networks: Non-Equilibrium Condensed Matter Physics with Light
Karyn Le Hur, Loïc Henriet, Alexandru Petrescu +3
We review recent developments concerning non-equilibrium quantum dynamics and many-body physics with light, in superconducting circuits and Josephson analogues. We start with quant…