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Light-matter interaction at the single-quantum level is the heart of many regimes of high fundamental importance to modern quantum technologies. Strong interaction of a qubit with a single photon of an electromagnetic field mode is…

Condensed matter physics and quantum electrodynamics (QED) have been long considered as distinct disciplines. This situation is changing by the progress in cavity QED materials. Motivated by these advances we aim to bridge these fields by…

Quantum Physics · Physics 2022-01-06 Vasil Rokaj

We revisit the superstrong coupling regime of multi-mode cavity quantum electrodynamics (QED), defined to occur when the frequency of vacuum Rabi oscillations between the qubit and the nearest cavity mode exceeds the cavity's free spectral…

Quantum Physics · Physics 2022-10-27 Nitish Mehta , Cristiano Ciuti , Roman Kuzmin , Vladimir E. Manucharyan

The analytical solution of the task of the interaction of quantized EM-field with multichain quasionedimensional axially symmetric qubit system by taking into account both the intrachain and interchain qubit coupling has been obtained for…

Quantum Physics · Physics 2015-05-27 Alla Dovlatova , Dmitry Yearchuck

Waveguide quantum electrodynamics platforms have emerged as promising candidates for exploring and implementing non-Markovian quantum phenomena. In this work, we investigate the formation and dynamics of superpositions of bound states in a…

Chip-based cavity quantum electrodynamics (QED) devices consisting of a self-assembled InAs quantum dot (QD) coupled to a high quality factor GaAs microdisk cavity are coherently probed through their optical channel using a fiber taper…

Quantum Physics · Physics 2009-11-13 Kartik Srinivasan , Christopher P. Michael , Raviv Perahia , Oskar Painter

We use a variational procedure to study finite density QCD in an approximation in which the interaction between quarks is modelled by that induced by instantons. We find that uniform states with conventional chiral symmetry breaking have…

High Energy Physics - Phenomenology · Physics 2009-10-30 M. Alford , K. Rajagopal , F. Wilczek

We explore experimentally a quantum metamaterial based on a superconducting chip with 25 frequency-tunable transmon qubits coupled to a common coplanar resonator. The collective bright and dark modes are probed via the microwave response,…

Quantum electrodynamics (QED) provides a highly accurate description of phenomena involving the interaction of atoms with light. We argue that the quantum theory describing the interaction of cold atoms with a vibrating membrane--quantum…

Mesoscale and Nanoscale Physics · Physics 2017-05-29 Dennis P. Clougherty , Sanghita Sengupta

While coherently-driven Kerr microcavities have rapidly matured as a platform for frequency comb formation, such microresonators generally possess weak Kerr coefficients; consequently, triggering comb generation requires millions of photons…

Quasi-transverse-electric and -transverse-magnetic fundamental whispering gallery modes in a polymer-coated silica microtoroid are theoretically investigated and demonstrated to possess very high-quality factors. The existence of a…

Quantum Physics · Physics 2015-05-20 Yun-Feng Xiao , Chang-Ling Zou , Peng Xue , Lixin Xiao , Yan Li , Chun-Hua Dong , Zheng-Fu Han , Qihuang Gong

We theoretically investigate optical bistability, mechanically induced absorption (MIA) and Fano resonance of a hybrid system comprising of a single quantum dot (QD) embedded in a solid state microcavity interacting with the quantized…

Quantum Physics · Physics 2019-11-28 Vijay Bhatt , Sabur A. Barbhuiya , Pradip K. Jha , Aranya B. Bhattacherjee

We study the properties of an array of QED-cavities coupled by nonlinear elements in the presence of photon leakage and driven by a coherent source. The main effect of the nonlinear couplings is to provide an effective cross-Kerr…

Quantum Physics · Physics 2014-09-02 Jiasen Jin , Davide Rossini , Martin Leib , Michael J. Hartmann , Rosario Fazio

We experimentally realize a new cavity quantum electrodynamics (QED) platform with defect-free single-atom array strongly coupled to an optical cavity. The defect-free single-atom array is obtained by rearranging a probabilistically loaded…

Quantum Physics · Physics 2025-02-28 Zhihui Wang , Shijun Guan , Guansheng Teng , Pengfei Yang , Pengfei Zhang , Gang Li , Tiancai Zhang

We investigate the quantum electrodynamics of a single two-level atom located at the focus of a parabolic cavity. We first work out the modifications of the spontaneous emission induced by the presence of this boundary in the optical…

Quantum Physics · Physics 2013-08-16 G. Alber , J. Z. Bernád , M. Stobińska , L. L. Sánchez-Soto , G. Leuchs

I analyze a scheme that is capable of producing large Kerr nonlinearities on cavity-atom polaritons in a cavity QED system consisting of multiple three-level atoms confined in a cavity mode. A weak control laser coupled to the atoms from…

Optics · Physics 2015-05-14 Yifu Zhu

Multimode cavity quantum electrodynamics ---where a two-level system interacts simultaneously with many cavity modes---provides a versatile framework for quantum information processing and quantum optics. Due to the combination of long…

We propose a method to study the quantum nonlinearity and observe the multiphoton transitions in a multiatom CQED system. We show that by inducing simultaneously destructive quantum interference for the single-photon and two-photon…

Optics · Physics 2015-10-28 Guoqing Yang , Wen-ju Gu , Gaoxiang Li , Bichen Zou , Yifu Zhu

Hybrid quantum systems with inherently distinct degrees of freedom play a key role in many physical phenomena. Famous examples include cavity quantum electrodynamics, trapped ions, or electrons and phonons in the solid state. Here, a strong…

Mesoscale and Nanoscale Physics · Physics 2016-11-26 J. M. Pirkkalainen , S. U. Cho , Jian Li , G. S. Paraoanu , P. J. Hakonen , M. A. Sillanpää

An outstanding challenge for color center-based quantum information processing technologies is the integration of optically-coherent emitters into scalable thin-film photonics. Here, we report on the integration of near-transform-limited…