244 citations · 1.4k across the 28 of their papers we have counts for
18 papers · 1 filter
Giant Emitters in a Structured Bath with Non-Hermitian Skin Effect
Lei Du, Lingzhen Guo, Yan Zhang +1
Giant emitters derive their name from nonlocal field-emitter interactions and feature diverse self-interference effects. Most of the existing works on giant emitters have considere…
Giant-Atom Effects on Population and Entanglement Dynamics of Rydberg Atoms
Yao-Tong Chen, Lei Du, Yan Zhang +4
Giant atoms are attracting interest as an emerging paradigm in the quantum optics of engineered waveguides. Here we propose to realize a synthetic giant atom working in the optical…
Engineering Arbitrary Hamiltonians in Phase Space
Lingzhen Guo, Vittorio Peano
We introduce a general method to engineer arbitrary Hamiltonians in the Floquet phase space of a periodically driven oscillator, based on the non-commutative Fourier transformation…
Complex decoherence-free interactions between giant atoms
Lei Du, Lingzhen Guo, Yong Li
Giant atoms provide a promising platform for engineering decoherence-free interactions which is a major task in modern quantum technologies. Here we study systematically how to imp…
Nonreciprocal and chiral single-photon scattering for giant atoms
Yao-Tong Chen, Lei Du, Lingzhen Guo +4
Quantum optics with giant atoms has provided a new paradigm to study photon scatterings. In this work, we investigate the nontrivial single-photon scattering properties of giant at…
Deep Learning of Quantum Many-Body Dynamics via Random Driving
Naeimeh Mohseni, Thomas Fösel, Lingzhen Guo +2
Neural networks have emerged as a powerful way to approach many practical problems in quantum physics. In this work, we illustrate the power of deep learning to predict the dynamic…
Oscillating bound states for a giant atom
Lingzhen Guo, Anton Frisk Kockum, Florian Marquardt +1
We investigate the relaxation dynamics of a single artificial atom interacting, via multiple coupling points, with a continuum of bosonic modes (photons or phonons) in a one-dimens…
Nonexponential decay of a giant artificial atom
Gustav Andersson, Baladitya Suri, Lingzhen Guo +2
In quantum optics, light-matter interaction has conventionally been studied using small atoms interacting with electromagnetic fields with wavelength several orders of magnitude la…
Probing the Tavis-Cummings level splitting with intermediate-scale superconducting circuits
Ping Yang, Jan David Brehm, Juha Leppäkangas +7
We demonstrate the local control of up to eight two-level systems interacting strongly with a microwave cavity. Following calibration, the frequency of each individual two-level sy…
Scalable Ion Trap Architecture for Universal Quantum Computation by Collisions
Pengfei Liang, Lingzhen Guo
We propose a scalable ion trap architecture for universal quantum computation, which is composed of an array of ion traps with one ion confined in each trap. The neighboring traps…
Local Sensing with the Multi-Level AC Stark Effect
Andre Schneider, Jochen Braumüller, Lingzhen Guo +5
Analyzing weak microwave signals in the GHz regime is a challenging task if the signal level is very low and the photon energy widely undefined. A superconducting qubit can detect…
Floquet Many-body Engineering: Topological and Many-body Physics in Phase Space Lattices
Pengfei Liang, Michael Marthaler, Lingzhen Guo
Hamiltonians which are inaccessible in static systems can be engineered in periodically driven many-body systems, i.e., Floquet many-body systems. We propose to use interacting par…
The giant acoustic atom -- a single quantum system with a deterministic time delay
Lingzhen Guo, Arne Grimsmo, Anton Frisk Kockum +2
We investigate the quantum dynamics of a single transmon qubit coupled to surface acoustic waves (SAWs) via two distant connection points. Since the acoustic speed is five orders o…
Effective Long-distance Interaction from Short-distance Interaction in Periodically Driven One-dimensional Classical System
Lingzhen Guo, Modan Liu, Michael Marthaler
We study the classical dynamics of many interacting particles in a periodically driven one-dimensional (1D) system. We show that under the rotating wave approximation (RWA), a shor…
The role of damping for the driven anharmonic quantum oscillator
Lingzhen Guo, Michael Marthaler, Stephan André +1
For the model of a linearly driven quantum anharmonic oscillator, the role of damping is investigated. We compare the position of the stable points in phase space obtained from a c…
Deterministic creation and stabilization of entanglement in circuit QED by homodyne-mediated feedback control
Zhuo Liu, Lulin Kuang, Kai Hu +4
In the solid-state circuit QED system and based on the homodyne measurement in dispersive regime, we demonstrate that a homodyne-current-based feedback can create and stabilize hig…
Dynamic Quantum Tunneling in Mesoscopic Driven Duffing Oscillators
Lingzhen Guo, Zhigang Zheng, Xin-Qi Li +1
We investigate the dynamic quantum tunneling between two attractors of a mesoscopic driven Duffing oscillator. We find that, in addition to inducing remarkable quantum shift of the…
Quantum Dynamics of Mesoscopic Driven Duffing Oscillators
Lingzhen Guo, Zhigang Zheng, Xin-Qi Li
We investigate the nonlinear dynamics of a mesoscopic driven Duffing oscillator in a quantum regime. In terms of Wigner function, we identify the nature of state near the bifurcati…