Related papers: Cavity QED based on strongly localized modes: exponentially enhancing single-atom cooperativity

Cavity QED based on strongly localized modes: exponentially enhancing single-atom cooperativity

URL: http://arxiv.org/abs/2509.04739v1
Date: Fri, 05 Sep 2025 01:40:25 GMT
Title: Cavity QED based on strongly localized modes: exponentially enhancing single-atom cooperativity
Authors: Qian Bin, Ying Wu, Jin-Hua Gao, Aixi Chen, Franco Nori, Xin-You Lü,
Abstract summary: We exploit the strongly localized effect of modes in cavity quantum electrodynamics.<n>We show the occurrence of ultra-long vacuum Rabi oscillations and the generation of strong photon blockade.<n>This work holds significant potential for applications in establishing longer-distance quantum communication networks.
Score: 6.107781681150055
License: http://creativecommons.org/licenses/by/4.0/
Abstract: Large single-atom cooperativity in quantum systems is important for quantum information processing. Here, we propose to exponentially enhance the single-atom cooperativity parameter by exploiting the strongly localized effect of modes in cavity quantum electrodynamics (QED) systems. By increasing the wing width of a cavity with special geometry symmetry, the interference property allows us to exponentially improves the quality factor Q without altering the mode volume V for cavities supporting subwavelength light modes. This effectively overcomes the trade-off between Q and V in conventional subwavelength Fabry-Perot cavities. Consequently, we demonstrate the occurrence of ultra-long vacuum Rabi oscillations and the generation of strong photon blockade by enhancing the single-atom cooperativity parameter. This work offers a promising approach for advancing coherent manipulation and holds significant potential for applications in establishing longer-distance quantum communication networks, enhancing the precision and stability of quantum sensors, and improving the efficiency of quantum algorithms.

Related papers

Qumode-Based Variational Quantum Eigensolver for Molecular Excited States [43.148034499498586]
We introduce the Qumode Subspace Variational Quantum Eigensolver (QSS-VQE), a hybrid quantum-classical algorithm for computing molecular excited states.<n>We demonstrate the performance of QSS-VQE through simulations of molecular excited states, including dihydrogen and a conical intersection in cytosine.
arXiv Detail & Related papers (2025-09-05T00:53:51Z)
Superradiance Enhanced Light-Matter Interaction in Spatially Ordered Shape and Volume Controlled Single Quantum Dots: Enabling On-Chip Photonic Networks [2.368393320613973]
On-chip photonic networks require spatially ordered matter-photon interconversion qubit sources.<n>The mesa-top single quantum dots (MTSQDs) have recently been demonstrated to meet these requirements.<n>We have exploited this unique feature of the MTSQDs to reproducibly create arrays of quantum dots that exhibit single photon superradiance.
arXiv Detail & Related papers (2025-05-11T00:18:09Z)
Floquet Engineering and Harnessing Giant Atoms in Frequency-Comb Emission and Bichromatic Correlations in Waveguide QED [9.566181461213207]
We consider a dynamically modulated qubit array, and realize frequency-controlled single-photon emission.<n>Our system also offers parity-dependent bunching and antibunching in frequency-filtered quantum correlations.<n>This work fundamentally broadens the fields of collective emission, and has wide applications in implementing frequency-encoded quantum information processing.
arXiv Detail & Related papers (2025-02-14T04:18:54Z)
Harnessing high-dimensional temporal entanglement using limited interferometric setups [41.94295877935867]
We develop the first complete analysis of high-dimensional entanglement in the polarization-time-domain. We show how to efficiently certify relevant density matrix elements and security parameters for Quantum Key Distribution. We propose a novel setup that can further enhance the noise resistance of free-space quantum communication.
arXiv Detail & Related papers (2023-08-08T17:44:43Z)
Hyper-entanglement between pulse modes and frequency bins [101.18253437732933]
Hyper-entanglement between two or more photonic degrees of freedom (DOF) can enhance and enable new quantum protocols. We demonstrate the generation of photon pairs hyper-entangled between pulse modes and frequency bins.
arXiv Detail & Related papers (2023-04-24T15:43:08Z)
Universal and ultrafast quantum computation based on free-electron-polariton blockade [0.3463527836552467]
We introduce a new element into cavity-QED - a free charged particle, acting as a flying qubit. We demonstrate that our approach enables ultrafast, deterministic and universal discrete-variable quantum computation.
arXiv Detail & Related papers (2023-03-23T13:55:11Z)
Strong parametric dispersive shifts in a statically decoupled multi-qubit cavity QED system [0.4915375958667782]
Cavity quantum electrodynamics (QED) with in-situ tunable interactions is important for developing novel systems for quantum simulation and computing. Here, we couple two transmon qubits to a lumped-element cavity through a shared dc-SQUID. We show that by parametrically driving the SQUID with an oscillating flux it is possible to independently tune the interactions between either of the qubits and the cavity dynamically.
arXiv Detail & Related papers (2021-03-16T18:46:57Z)
Hybrid quantum photonics based on artificial atoms placed inside one hole of a photonic crystal cavity [47.187609203210705]
Hybrid quantum photonics with SiV$-$-containing nanodiamonds inside one hole of a one-dimensional, free-standing, Si$_3$N$_4$-based photonic crystal cavity is presented. The resulting photon flux is increased by more than a factor of 14 as compared to free-space. Results mark an important step to realize quantum network nodes based on hybrid quantum photonics with SiV$-$- center in nanodiamonds.
arXiv Detail & Related papers (2020-12-21T17:22:25Z)
Tunable quantum photonics platform based on fiber-cavity enhanced single photon emission from two-dimensional hBN [52.915502553459724]
In this work we present a hybrid system consisting of defect centers in few-layer hBN grown by chemical vapor deposition and a fiber-based Fabry-Perot cavity. We achieve very large cavity-assisted signal enhancement up to 50-fold and equally strong linewidth narrowing owing to cavity funneling. Our work marks an important milestone for the deployment of 2D materials coupled to fiber-based cavities in practical quantum technologies.
arXiv Detail & Related papers (2020-06-23T14:20:46Z)
Entanglement generation via power-of-SWAP operations between dynamic electron-spin qubits [62.997667081978825]
Surface acoustic waves (SAWs) can create moving quantum dots in piezoelectric materials. We show how electron-spin qubits located on dynamic quantum dots can be entangled.
arXiv Detail & Related papers (2020-01-15T19:00:01Z)

This list is automatically generated from the titles and abstracts of the papers in this site.