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Autonomous Distribution of Programmable Multiqubit Entanglement in a Dual-Rail Quantum Network
Joan Agustí, Xin H. H. Zhang, Yuri Minoguchi +1
We propose and analyze a scalable and fully autonomous scheme for preparing spatially distributed multiqubit entangled states in a dual-rail waveguide QED setup. In this approach,…
Chiral quantum optics in the bulk of photonic quantum Hall systems
Daniele De Bernardis, Francesco Piccioli, Peter Rabl +1
We study light-matter interactions in the bulk of a two-dimensional photonic lattice system, where photons are subject to the combined effect of a synthetic magnetic field and an o…
The bosonic skin effect: boundary condensation in asymmetric transport
Louis Garbe, Yuri Minoguchi, Julian Huber +1
We study the incoherent transport of bosonic particles through a one dimensional lattice with different left and right hopping rates, as modelled by the asymmetric simple inclusion…
Can we observe non-perturbative vacuum shifts in cavity QED?
Rocío Sáez-Blázquez, Daniele de Bernardis, Johannes Feist +1
We address the fundamental question whether or not it is possible to achieve conditions under which the coupling of a single dipole to a strongly confined electromagnetic vacuum ca…
Universal time-dependent control scheme for realizing arbitrary linear bosonic transformations
Ze-Liang Xiang, Diego González Olivares, Juan José García-Ripoll +1
We study the implementation of arbitrary excitation-conserving linear transformations between two sets of stationary bosonic modes, which are connected through a photonic quant…
Long-distance distribution of qubit-qubit entanglement using Gaussian-correlated photonic beams
Joan Agustí, Yuri Minoguchi, Johannes M. Fink +1
We investigate the deterministic generation and distribution of entanglement in large quantum networks by driving distant qubits with the output fields of a non-degenerate parametr…
Universal deterministic quantum operations in microwave quantum links
Guillermo F. Peñas, Ricardo Puebla, Tomás Ramos +2
We propose a realistic setup, inspired by already existing experiments, within which we develop a general formalism for the implementation of distributed quantum gates. Mediated by…
Realistic simulations of spin squeezing and cooperative coupling effects in large ensembles of interacting two-level systems
Julian Huber, Ana Maria Rey, Peter Rabl
We describe an efficient numerical method for simulating the dynamics of interacting spin ensembles in the presence of dephasing and decay. The method builds on the discrete trunca…
Quantum computing with superconducting circuits in the picosecond regime
Daoquan Zhu, Tuomas Jaako, Qiongyi He +1
We discuss the realization of a universal set of ultrafast single- and two-qubit operations with superconducting quantum circuits and investigate the most relevant physical and tec…
Phase-Space Methods for Simulating the Dissipative Many-Body Dynamics of Collective Spin Systems
Julian Huber, Peter Kirton, Peter Rabl
We describe an efficient numerical method for simulating the dynamics and steady states of collective spin systems in the presence of dephasing and decay. The method is based on th…
Light-matter interactions in synthetic magnetic fields: Landau-photon polaritons
Daniele De Bernardis, Ze-Pei Cian, Iacopo Carusotto +2
We study light-matter interactions in two dimensional photonic systems in the presence of a spatially homogeneous synthetic magnetic field for light. Specifically, we consider one…
The Vacua of Dipolar Cavity Quantum Electrodynamics
Michael Schuler, Daniele De Bernardis, Andreas M. Läuchli +1
The structure of solids and their phases is mainly determined by static Coulomb forces while the coupling of charges to the dynamical, i.e., quantized degrees of freedom of the ele…
Thermodynamics of ultrastrongly coupled light-matter systems
Philipp Pilar, Daniele De Bernardis, Peter Rabl
We study the thermodynamic properties of a system of two-level dipoles that are coupled ultrastrongly to a single cavity mode. By using exact numerical and approximate analytical m…
Emergence of PT-symmetry breaking in open quantum systems
Julian Huber, Peter Kirton, Stefan Rotter +1
The effect of PT-symmetry breaking in coupled systems with balanced gain and loss has recently attracted considerable attention and has been demonstrated in various photonic, elect…
Super-correlated radiance in nonlinear photonic waveguides
Zhihai Wang, Tuomas Jaako, Peter Kirton +1
We study the collective decay of two-level emitters coupled to a nonlinear waveguide, for example, a nanophotonic lattice or a superconducting resonator array with strong photon-ph…
Quantum Simulation of Non-perturbative Cavity QED with Trapped Ions
Tuomas Jaako, Juan José Garcia-Ripoll, Peter Rabl
We discuss the simulation of non-perturbative cavity-QED effects using systems of trapped ions. Specifically, we address the implementation of extended Dicke models with both colle…
Non-equilibrium magnetic phases in spin lattices with gain and loss
Julian Huber, Peter Kirton, Peter Rabl
We study the magnetic phases of a non-equilibrium spin chain, where coherent interactions between neighboring lattice sites compete with alternating gain and loss processes. This c…
Quantum state transfer via acoustic edge states in a 2D optomechanical array
Marc-Antoine Lemonde, Vittorio Peano, Peter Rabl +1
We propose a novel hybrid platform where solid-state spin qubits are coupled to the acoustic modes of a two-dimensional array of optomechanical nano cavities. Previous studies of c…
Ultrastrong coupling circuit QED in the radio-frequency regime
T. Jaako, J. J. Garcia-Ripoll, P. Rabl
We study a circuit QED setup where multiple superconducting qubits are ultrastrongly coupled to a single radio-frequency resonator. In this extreme parameter regime of cavity QED t…
Coherence as a measure for non-Markovianity and its applications to color centers in diamond
Ariel Norambuena, Jerónimo R. Maze, Peter Rabl +1
The degree of non-Markovianity of a continuous bath can be quantified by means of the coherence. This simple measure is experimentally accessible through Ramsey spectroscopy, but i…
Environment-Induced Rabi Oscillations in the Optomechanical Boson-Boson Model
Y. Minoguchi, P. Kirton, P. Rabl
We analyze the strong-coupling dynamics of a driven harmonic oscillator whose energy is modulated by a continuum of other bosonic modes. This type of system-bath interaction appear…
Quantum acousto-optic control of light-matter interactions in nanophotonic networks
G. Calajo, M. J. A. Schuetz, H. Pichler +4
We analyze the coupling of atoms or atom-like emitters to nanophotonic waveguides in the presence of propagating acoustic waves. Specifically, we show that strong index modulations…
Active energy transport and the role of symmetry breaking in microscopic power grid
Julian Huber, Peter Rabl
We study the transfer of energy through a network of coupled oscillators, which represents a minimalmicroscopic power grid connecting multiple active quantum machines. We evaluate…
Breakdown of gauge invariance in ultrastrong-coupling cavity QED
Daniele De Bernardis, Philipp Pilar, Tuomas Jaako +2
We revisit the derivation of Rabi- and Dicke-type models, which are commonly used for the study of quantum light-matter interactions in cavity and circuit QED. We demonstrate that…