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Two-electron charged self-assembled quantum dot molecules exhibit a decoherence-avoiding singlet-triplet qubit subspace and an efficient spin-photon interface. We demonstrate quantum entanglement between emitted photons and the spin-qubit…

Mesoscale and Nanoscale Physics · Physics 2017-12-27 Yves L. Delley , Martin Kroner , Stefan Fält , Werner Wegscheider , Ataç İmamoğlu

We provide a simple semi-classical formalism to describe the coupling between one or several quantum emitters and a structured environment. Describing the emitter by an electric polarizability, and the surrounding medium by a Green…

Optics · Physics 2019-01-30 Dorian Bouchet , Rémi Carminati

We study the light absorption and energy transferring in a donor-acceptor system with a bionic structure. In the optimal case with uniform couplings, it is found that the quantum dynamics of this seemingly complicated system is reduced as a…

Biological Physics · Physics 2012-04-13 H. Dong , D. Z. Xu , C. P. Sun

Single atoms absorb and emit light from a resonant laser beam photon by photon. We show that a single atom strongly coupled to an optical cavity can absorb and emit resonant photons in pairs. The effect is observed in a photon correlation…

Quantum Physics · Physics 2009-11-13 A. Kubanek , A. Ourjoumtsev , I. Schuster , M. Koch , P. W. H. Pinkse , K. Murr , G. Rempe

Single photons of subnatural linewidth and high spectral brightness are necessary for efficient light-matter interaction at the single photon level, which lies at the heart of many quantum photonic technologies. Here we demonstrate a bright…

Single photons constitute a main platform in quantum science and technology: they carry quantum information over extended distances in the future quantum internet and can be manipulated in advanced photonic circuits enabling scalable…

We theoretically investigate the quantum scattering of a single-photon pulse interacting with an ensemble of $\Lambda$-type three-level atoms coupled to a one-dimensional waveguide. With an effective non-Hermitian Hamiltonian, we study the…

Quantum Physics · Physics 2017-11-08 Guo-Zhu Song , Ewan Munro , Wei Nie , Fu-Guo Deng , Guo-Jian Yang , Leong-Chuan Kwek

We suggest a hybrid plasmonic device consisting of a bimodal metallic nanoantenna coupled to an incoherently pumped quantum emitter. This hybrid device emits light into the two modes entangled in the number of photons. The process is a…

Quantum Physics · Physics 2017-02-22 Jakob Straubel , Rafał Sarniak , Carsten Rockstuhl , Karolina Słowik

We study the correlated transport of photons through a chain of three-level emitters that are coupled chirally to a photonic mode of a waveguide. It is found that this system can transfer a classical input into a strongly correlated state…

Quantum Physics · Physics 2021-03-03 Ole Aae Iversen , Thomas Pohl

We present a method to remove, using only linear optics, exactly one photon from a field-mode. This is achieved by putting the system in contact with an absorbing environment which is under continuous monitoring. A feedback mechanism then…

Quantum Physics · Physics 2009-11-07 John Calsamiglia , Stephen M. Barnett , Norbert Lütkenhaus , Kalle-Antti Suominen

We propose a method to perform single-shot optical readout of a quantum bit (qubit) using cavity quantum electrodynamics. We selectively couple the optical transitions associated with different qubit basis states to the cavity, and utilize…

Quantum Physics · Physics 2016-07-13 Shuo Sun , Edo Waks

We introduce a circuit quantum electrodynamical setup for a "single-photon" transistor. In our approach photons propagate in two open transmission lines that are coupled via two interacting transmon qubits. The interaction is such that no…

Quantum Physics · Physics 2013-09-24 Lukas Neumeier , Martin Leib , Michael J. Hartmann

The influence of the center of mass motion of a trapped two level system on efficient resonant single photon absorption is investigated. It is shown that this absorption process depends strongly on the ratio between the characteristic time…

Quantum Physics · Physics 2016-10-12 Nils Trautmann , Gernot Alber , Gerd Leuchs

The technologies of heating, photovoltaics, water photocatalysis and artificial photosynthesis depend on the absorption of light and novel approaches such as coherent absorption from a standing wave promise total dissipation of energy.…

Photon emission and absorption by an individual qubit are essential elements for the quantum manipulation of light. Here we demonstrate the controllability of spontaneous emission of a qubit in various electromagnetic environments. The…

Quantum Physics · Physics 2019-07-10 Wai-Keong Mok , Jia-Bin You , Wenzu Zhang , Wan-Li Yang , Ching Eng Png

We theoretically demonstrate the generation and radiation of coherent nanoplasmons powered by a single three-level quantum emitter on a plasmonic nanoresonator. By pumping the three-level emitter in a Raman configuration, we show a pathway…

Optics · Physics 2017-12-01 Pu Zhang , Igor Protsenko , Vahid Sandoghdar , Xue-Wen Chen

Stimulated Raman interaction of a classically pumped single three-level $\Lambda$-type atom in a resonator cavity featuring both radiative and unwanted losses is studied. It is shown that in the regime of stimulated adiabatic Raman passage…

Quantum Physics · Physics 2016-09-08 Mikayel Khanbekyan , Dirk-Gunnar Welsch

We investigate the quantum optical properties of a single photon emitter coupled to a finite-size metal nanoparticle using a photon Green function technique that rigorously quantizes the electromagnetic fields. We first obtain pronounced…

Mesoscale and Nanoscale Physics · Physics 2012-02-07 C. Van Vlack , Philip Trøst Kristensen , S. Hughes

We provide the ultimate precision attainable in spectroscopy of a quantum emitter using single-photon pulses. We find the maximum for estimating the linewidth to be independent of the details of the emitter's bare Hamiltonian while that for…

Quantum Physics · Physics 2026-03-17 Sourav Das , Aiman Khan , Francesco Albarelli , Animesh Datta

Single photons enable the distribution of quantum information over large distances and thus play a major role in quantum technologies such as communication and computing. Solid-state emitters are practical and efficient sources of single…

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