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We investigate the spontaneous emission spectrum of a qubit in a lossy resonant cavity. We use neither the rotating-wave approximation nor the Markov approximation. The qubit-cavity coupling strength is varied from weak, to strong, even to…

Quantum Physics · Physics 2015-05-20 Xiufeng Cao , J. Q. You , Hang Zheng , F. Nori

The ability to realize high-fidelity quantum communication is one of the many facets required to build generic quantum computing devices. In addition to quantum processing, sensing, and storage, transferring the resulting quantum states…

Controlling photon emission by single quantum emitters with nanostructures is crucial for scalable on-chip quantum information processing. Nowadays nanoresonators can affect the lifetime of emitters and ultimately induce strong coupling…

Quantum Physics · Physics 2014-11-26 B. le Feber , N. Rotenberg , L. Kuipers

Biphotons of narrow bandwidth and long temporal length play a crucial role in long-distance quantum communication (LDQC) and linear optical quantum computing (LOQC). However, generation of these photons usually requires atomic ensembles…

In conventional inductive wireless power devices, the energy is transferred via only reactive near fields, which is equivalent to non-radiative F\"orster energy transfer in optics. Radiation from transmitting and receiving coils is usually…

Applied Physics · Physics 2023-02-07 N. Ha-Van , C. R. Simovski , F. S. Cuesta , P. Jayathurathnage , S. A. Tretyakov

The resonant elements that grant metamaterials their unique properties have the fundamental limitation of restricting their useable frequency bandwidth. The development of frequency-agile metamaterials has helped to alleviate these…

In the circuit quantum electrodynamics architecture, both the resonance frequency and the coupling of superconducting qubits to microwave field modes can be controlled via external electric and magnetic fields to explore qubit -- photon…

Quantum Physics · Physics 2015-05-06 S. Zeytinoglu , M. Pechal , S. Berger , A. A. Abdumalikov , A. Wallraff , S. Filipp

We investigate the generation and engineering of photonic band gaps in waveguide quantum electrodynamics systems containing periodically arranged atom-polymers. We first consider the configuration of a dimer array coupled to a waveguide.…

Quantum Physics · Physics 2025-02-19 M. S. Wang , W. Z. Jia

A theory of optical emission of quantum dot arrays in quantum microcavities is developed. The regime of the strong coupling between the quantum dots and photonic mode of the cavity is considered. The quantum dots are modeled as two-level…

Mesoscale and Nanoscale Physics · Physics 2015-05-19 A. N. Poddubny , M. M. Glazov , N. S. Averkiev

In this paper, the capacity of wireless channels is characterized based on electromagnetic and antenna theories with only minimal assumptions. We assume the transmitter can generate an arbitrary current distribution inside a spherical…

Information Theory · Computer Science 2016-11-17 Wonseok Jeon , Sae-Young Chung

We study the coupling between a photonic crystal cavity and an off-resonant quantum dot under resonant excitation of the cavity or the quantum dot. Linewidths of the quantum dot and the cavity as a function of the excitation laser power are…

Quantum Physics · Physics 2011-01-20 Arka Majumdar , Andrei Faraon , Erik Kim , Dirk Englund , Hyochul Kim , Pierre Petroff , Jelena Vuckovic

With the realization of controlled quantum systems, exploring excitations beyond the resonant case opens new possibilities. We investigate an extended Jaynes-Cummings model where two photon modes are coupled off-resonantly to a quantum…

A Quantum Internet, i.e., a global interconnection of quantum devices, is the long term goal of quantum communications, and has so far been based on two-dimensional systems (qubits). Recent years have seen a significant development of…

Quantum Physics · Physics 2022-03-11 Davide Bacco , Jacob F. F. Bulmer , Manuel Erhard , Marcus Huber , Stefano Paesani

We study the dynamics of a quantum emitter coupled to a two-dimensional photonic crystal featuring a finite bandwidth with sharp edges and a Van-Hove singularity. We study the effect of strong system-bath coupling and non-Markovianity of…

Mesoscale and Nanoscale Physics · Physics 2022-07-27 Matthieu Vanhoecke , Orazio Scarlatella , Marco Schirò

The emission properties of single quantum dots in planar microcavities are studied experimentally and theoretically. Fivefold Enhanced spontaneous emission outside the microcavity is found for dots in resonance with the cavity mode,…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 G. Ramon , U. Mizrahi , N. Akopian , S. Braitbart , D. Gershoni , T. L. Reinecke , B. Gerardot , P. M. Petroff

The interaction of quantum emitters with structured baths modifies both their individual and collective dynamics. In Gonz\'alez-Tudela \emph{et al} we show how exotic quantum dynamics emerge when QEs are spectrally tuned around the middle…

Quantum Physics · Physics 2018-01-22 A. González-Tudela , J. I. Cirac

High penetration levels of distributed photovoltaic(PV) generation on an electrical distribution circuit present several challenges and opportunities for distribution utilities. Rapidly varying irradiance conditions may cause voltage sags…

Mathematical Physics · Physics 2011-12-08 Petr Sulc , Konstantin Turitsyn , Scott Backhaus , Michael Chertkov

We examine transmission through a quantum graph vertex to which auxiliary edges with constant potentials are attached. We find a characterization of vertex couplings for which the transmission probability from a given "input" line to a…

Mathematical Physics · Physics 2016-01-01 Ondřej Turek

Quantum computing is poised to redefine the algorithmic foundations of communication systems. While quantum superposition and entanglement enable quadratic or exponential speedups for specific problems, identifying use cases where these…

Signal Processing · Electrical Eng. & Systems 2025-12-10 Naoki Ishikawa , Giuseppe Thadeu Freitas de Abreu , Petar Popovski , Robert W. Heath

Increasing photovoltaic (PV) penetration in the distribution system can often lead to voltage violations. Mitigation of these violations requires reactive power intervention from PV inverters. However, the unbalanced nature of the…

Systems and Control · Electrical Eng. & Systems 2024-03-13 Dhaval Dalal , Anamitra Pal , Raja Ayyanar