Nonperturbative waveguide quantum electrodynamics DOI Creative Commons
Yuto Ashida, Takeru Yokota, Ataç İmamoğlu

et al.

Physical Review Research, Journal Year: 2022, Volume and Issue: 4(2)

Published: June 6, 2022

Understanding physical properties of quantum emitters strongly interacting with quantized electromagnetic modes is one the primary goals in emergent field waveguide electrodynamics (QED). When light-matter coupling strength comparable to or even exceeds energies elementary excitations, conventional approaches based on perturbative treatment interactions, two-level description matter and photon-number truncation are no longer sufficient. Here we study out equilibrium QED such nonperturbative regimes basis a comprehensive rigorous theoretical approach using an asymptotic decoupling unitary transformation. We uncover several surprising features ranging from symmetry-protected many-body bound states continuum strong renormalization effective mass potential; latter may explain recent experiments demonstrating cavity-induced changes chemical reactivity as well enhancements ferromagnetism superconductivity. To illustrate our general results concrete examples, use formalism model coupled cavity arrays, which relevant superconducting qubits microwave resonators atoms photonic crystals. examine relation between delocalization-localization transition spin-boson model; notably, point that reentrant can occur where becomes dominant energy scale. also discuss applications other problems different fields, including optics, condensed physics, chemistry.

Language: Английский

Roadmap on structured waves DOI
Konstantin Y. Bliokh, Ebrahim Karimi, Miles J. Padgett

et al.

Journal of Optics, Journal Year: 2023, Volume and Issue: 25(10), P. 103001 - 103001

Published: July 26, 2023

Abstract Structured waves are ubiquitous for all areas of wave physics, both classical and quantum, where the wavefields inhomogeneous cannot be approximated by a single plane wave. Even interference two waves, or (evanescent) wave, provides number nontrivial phenomena additional functionalities as compared to Complex with inhomogeneities in amplitude, phase, polarization, including topological structures singularities, underpin modern nanooptics photonics, yet they equally important, e.g. quantum matter acoustics, water etc. crucial optical electron microscopy, propagation scattering, imaging, communications, optics, non-Hermitian systems, condensed-matter optomechanics, plasmonics metamaterials, acoustic manipulation, so forth. This Roadmap is written collectively prominent researchers aims survey role structured various physics. Providing background, current research, anticipating future developments, it will interest wide cross-disciplinary audience.

Language: Английский

Citations

70
Resonance Fluorescence of a Chiral Artificial Atom DOI Creative Commons
Chaitali Joshi, Frank Yang, Mohammad Mirhosseini

et al.

Physical Review X, Journal Year: 2023, Volume and Issue: 13(2)

Published: June 26, 2023

We demonstrate a superconducting artificial atom with strong unidirectional coupling to microwave photonic waveguide. Our is realized by transmon qubit the waveguide at two spatially separated points time-modulated interactions. Direction-sensitive interference arising from parametric couplings in our scheme results nonreciprocal response, where we measure forward/backward ratio of spontaneous emission exceeding 100. verify quantum nonlinear behavior this chiral measuring resonance fluorescence spectrum under resonant drive and observing well-resolved Mollow triplets. Further, chirality for second transition energy control it pulse sequence realize qubit-state-dependent phase on itinerant photons. demonstration puts forth hardware platform scalable realization several key functionalities pursued within paradigm optics, including networks all-to-all connectivity, driven-dissipative stabilization many-body entanglement, generation complex nonclassical states light.8 MoreReceived 21 December 2022Revised 12 April 2023Accepted 26 2023DOI:https://doi.org/10.1103/PhysRevX.13.021039Published American Physical Society terms Creative Commons Attribution 4.0 International license. Further distribution work must maintain attribution author(s) published article's title, journal citation, DOI.Published SocietyPhysics Subject Headings (PhySH)Research AreasOpen systems & decoherenceQuantum networksQuantum simulationQuantum Information

Language: Английский

Citations

48
Light–matter interactions in quantum nanophotonic devices DOI
Alejandro González-Tudela, Andreas Reiserer, Juan José García‐Ripoll

et al.

Nature Reviews Physics, Journal Year: 2024, Volume and Issue: 6(3), P. 166 - 179

Published: Jan. 25, 2024

Language: Английский

Citations

37
Remote Charging and Degradation Suppression for the Quantum Battery DOI
Wan-Lu Song, Haibin Liu, Bin Zhou

et al.

Physical Review Letters, Journal Year: 2024, Volume and Issue: 132(9)

Published: Feb. 27, 2024

The quantum battery (QB) makes use of effects to store and supply energy, which may outperform its classical counterpart. However, there are two challenges in this field. One is that the environment-induced decoherence causes energy loss aging QB, other decreasing charger-QB coupling strength with increasing their distance charging QB become inefficient. Here, we propose a scheme realize remote via charger rectangular hollow metal waveguide. It found an ideal realized as long bound states formed spectrum total system consisting charger, electromagnetic environment Using constructive role decoherence, our immune aging. Additionally, without resorting direct interaction, works way long-range wireless-like charging. Effectively overcoming challenges, result supplies insightful guideline practical realization by reservoir engineering.

Language: Английский

Citations

26
Single-photon scattering in a giant-molecule waveguide-QED system DOI
Xian‐Li Yin, Yu-Hong Liu, Jin‐Feng Huang

et al.

Physical review. A/Physical review, A, Journal Year: 2022, Volume and Issue: 106(1)

Published: July 21, 2022

We study the coherent single-photon scattering in a one-dimensional waveguide coupled to giant artificial molecule consisting of two atoms. Since each atom couples via coupling points, couplings with have three different configurations: separated-, braided-, and nested-coupling cases. obtain exact expressions transmission reflection amplitudes real-space approach. It is found that behavior spectra depends on phase shift between neighboring configuration, Concretely, we photon both Markovian non-Markovian regimes, which propagating time points neglected considered, respectively. Under limit, asymmetric Fano line shapes configurations giant-molecule waveguide-QED system can be obtained by choosing proper shift, window adjusted strength atoms these configurations. In particular, multiple peaks dips are revived regime. This paper will pave way for controllable devices based systems.

Language: Английский

Citations

40
Generation of two-giant-atom entanglement in waveguide-QED systems DOI
Xian‐Li Yin, Jie‐Qiao Liao

Physical review. A/Physical review, A, Journal Year: 2023, Volume and Issue: 108(2)

Published: Aug. 28, 2023

We study the generation of quantum entanglement between two giant atoms coupled to a one-dimensional waveguide. Since each atom interacts with waveguide at separate coupling points, there exist three different configurations in two-atom system: separated, braided, and nested couplings. Within Wigner-Weisskopf framework for single master equations governing evolution are obtained. For configuration, dynamics is studied, including cases atomic initial states: single- double-excitation states. It shown that generated depends on phase shift, state. single-excitation state, exists steady-state these couplings due appearance dark an sudden birth observed via adjusting shift. In particular, maximal about one order magnitude larger than those braided addition, influence frequency detuning studied. This work can be utilized control networks based giant-atom waveguide-QED systems, which have wide potential applications information processing.

Language: Английский

Citations

26
Non-Markovian dynamics with a giant atom coupled to a semi-infinite photonic waveguide DOI
Zhong-yin Li, H. Z. Shen

Physical review. A/Physical review, A, Journal Year: 2024, Volume and Issue: 109(2)

Published: Feb. 13, 2024

We study the non-Markovian dynamics of a two-level giant atom interacting with one-dimensional semi-infinite waveguide through multiple coupling points, where perfect mirror is located at endpoint waveguide. The system enters process when travel time photon between adjacent points sufficiently large compared to inverse bare relaxation rate atom. released by spontaneous emission transfers or reabsorbed emitted via having completed round trip after reflection mirror, which leads being trapped and forming bound states. find that three different types states can be formed in system, containing static no inversion population, periodic equal amplitude oscillation two states, non-equal physical origins formation are revealed. Moreover, we consider influences dissipation unwanted modes dephasing on Finally, extend more general case involving many atoms coupled into obtained set delay differential equations for might open way better understand

Language: Английский

Citations

15
Remote-Entanglement Protocols for Stationary Qubits with Photonic Interfaces DOI Creative Commons
Hans K.C. Beukers, M. Pasini,

Hyeongrak Choi

et al.

PRX Quantum, Journal Year: 2024, Volume and Issue: 5(1)

Published: March 29, 2024

The generation of entanglement between distant quantum systems is at the core networking. In recent years, numerous theoretical protocols for remote-entanglement have been proposed, many which experimentally realized. Here, we provide a modular framework to elucidate general mechanisms photon-mediated single spins in atomic or solid-state systems. Our categorizes existing various levels abstraction and allows combining elements different schemes new ways. These layers make it possible readily compare hardware. To enable practical evaluation tailored specific experimental parameters, devised numerical simulations based on with our codes available online.1 MoreReceived 27 June 2023Revised 30 October 2023DOI:https://doi.org/10.1103/PRXQuantum.5.010202Published by American Physical Society under terms Creative Commons Attribution 4.0 International license. Further distribution this work must maintain attribution author(s) published article's title, journal citation, DOI.Published SocietyPhysics Subject Headings (PhySH)Research AreasEntanglement productionOptical information processingQuantum entanglementQuantum atoms & lightQuantum solid state qubitsQuantum trapped ionsQuantum networksQuantum repeatersQuantum Information, Science Technology

Language: Английский

Citations

15
Observation of Superradiant Bursts in a Cascaded Quantum System DOI Creative Commons
Christian Liedl, Felix Tebbenjohanns, Constanze Bach

et al.

Physical Review X, Journal Year: 2024, Volume and Issue: 14(1)

Published: Feb. 16, 2024

We experimentally investigate the collective radiative decay of a fully inverted ensemble two-level atoms for chiral, i.e., propagation direction-dependent light-matter coupling. Despite fundamentally different interaction Hamiltonian which has reduced symmetry compared to standard Dicke case superradiance, we do observe superradiant burst light. The occurs above threshold number atoms, and its peak power scales faster with than in free-space superradiance. measure first-order coherence distinguish two regimes, one dominated by induced during excitation process other governed vacuum fluctuations. Our results shed light on dynamics cascaded quantum many-body systems, systems each emitter is only driven radiated emitters that are upstream cascade. findings may turn out useful generating multiphoton Fock states as resource technologies. Published American Physical Society 2024

Language: Английский

Citations

14
Hermitian and non-Hermitian topology from photon-mediated interactions DOI Creative Commons
Federico Roccati, Miguel Bello, Zongping Gong

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: March 16, 2024

Abstract As light can mediate interactions between atoms in a photonic environment, engineering it for endowing the photon-mediated Hamiltonian with desired features, like robustness against disorder, is crucial quantum research. We provide general theorems on topology of terms both Hermitian and non-Hermitian topological invariants, unveiling phenomena preservation reversal, revealing system-bath correspondence. Depending Hermiticity environment parity spatial dimension, atomic invariants turn out to be equal or opposite. Consequently, emergence boundary modes opposite group velocities two-dimensional systems established. Owing its applicability, our results guide design systems.

Language: Английский

Citations

13