244 citations · 1.4k across the 28 of their papers we have counts for
28 papers
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…
Dynamical phase transitions in quantum spin models with antiferromagnetic long-range interactions
Jad C. Halimeh, Maarten Van Damme, Lingzhen Guo +2
In recent years, dynamical phase transitions and out-of-equilibrium criticality have been at the forefront of ultracold gases and condensed matter research. Whereas universality an…
Phase Space Crystal Vibrations: Chiral Edge States with Preserved Time-reversal Symmetry
Lingzhen Guo, Vittorio Peano, Florian Marquardt
It was recently discovered that atoms subject to a time-periodic drive can give rise to a crystal structure in phase space. In this work, we point out the atom-atom interactions gi…
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…
Condensed Matter Physics in Time Crystals
Lingzhen Guo, Pengfei Liang
Time crystals are physical systems whose time translation symmetry is spontaneously broken. Although the spontaneous breaking of continuous time-translation symmetry in static syst…
Many-Body Dephasing in a Trapped-Ion Quantum Simulator
Harvey B. Kaplan, Lingzhen Guo, Wen Lin Tan +4
How a closed interacting quantum many-body system relaxes and dephases as a function of time is a fundamental question in thermodynamic and statistical physics. In this work, we an…
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…
Resonance inversion in a superconducting cavity coupled to artificial atoms and a microwave background
Juha Leppäkangas, Jan David Brehm, Ping Yang +4
We demonstrate how heating of an environment can invert the line shape of a driven cavity. We consider a superconducting coplanar cavity coupled to multiple artificial atoms. The m…
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…
Synthesizing Lattice Structure in Phase Space
Lingzhen Guo, Michael Marthaler
We consider a realistic model, i.e., ultracold atoms in a driven optical lattice, to realize phase space crystals [Phys. Rev. Lett. 111, 205303 (2013)]. The corresponding lattice s…
Multi-photon dressing of an anharmonic superconducting many-level quantum circuit
Jochen Braumüller, Joel Cramer, Steffen Schlör +10
We report on the investigation of a superconducting anharmonic multi-level circuit that is coupled to a harmonic readout resonator. We observe multi-photon transitions via virtual…
Phase Space Crystals: A New Way to Create a Quasienergy Band Structure
Lingzhen Guo, Michael Marthaler, Gerd Schön
A novel way to create a band structure of the quasienergy spectrum for driven systems is proposed based on the discrete symmetry in phase space. The system, e.g., an ion or ultraco…
Quantum critical temperature of a modulated oscillator
Lingzhen Guo, Vittorio Peano, M. Marthaler +1
We show that the rate of switching between the vibrational states of a modulated nonlinear oscillator is characterized by a quantum critical temperature . The ra…
Emission spectrum of the driven nonlinear oscillator
Stephan André, Lingzhen Guo, Vittorio Peano +2
Motivated by recent "circuit QED" experiments we investigate the noise properties of coherently driven nonlinear resonators. By using Josephson junctions in superconducting circuit…