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Single solid-state quantum emitters offer considerable potential for the implementation of sources of indistinguishable single-photons, which are central to many photonic quantum information systems. Nanophotonic geometry optimization with…

We investigate the generation of single photons and photon pairs in a cavity quantum electrodynamics system of a four-level quantum dot coupled to bimodal cavity. By tuning frequencies and intensity ratio of the driving lasers,…

Quantum Physics · Physics 2019-11-04 Xiang Cheng , Chengwang Zhao , Han Ye , Jingran Liu , Yumin Liu , Zhongyuan Yu

The coherent emission of multiple atoms gives rise to superradiance, a cornerstone phenomenon in quantum optics with wide-ranging applications in quantum information processing and precision metrology. Despite its importance, how the…

Quantum Physics · Physics 2025-10-15 Ruijin Sun , Xiang Guo , Andreas Ruschhaupt , Zhihai Wang

The prospect of realizing building blocks for long-distance quantum communication is a major driving force for the development of advanced nanophotonic devices. Significant progress has been achieved in this field with respect to the…

Mesoscale and Nanoscale Physics · Physics 2018-08-10 M. Gschrey , M. Seifried , L. Krüuger , R. Schmidt , J. -H. Schulze , T. Heindel , S. Burger , S. Rodt , F. Schmidt , A. Strittmatter , S. Reitzenstein

Purcell-enhanced quantum dot single-photon emission in the telecom C-band from InAs quantum dots inside circular Bragg grating cavities is shown. The InAs quantum dots are grown by means of molecular beam epitaxy on an InP substrate and are…

Cooperative emission of photons from an ensemble of quantum dots (QDs) as superradiance can arise from the electronically coupled QDs with a coherent emitting excited state. This contrasts with superfluorescence (Dicke superradiance), where…

Indistinguishability of single photons from independent sources is critically important for scalable quantum technologies. We provide a comprehensive comparison of single-photon indistinguishability of different kinds of cavity quantum…

Quantum Physics · Physics 2024-04-18 Miao Cai , Mingyuan Chen , Jiangshan Tang , Keyu Xia

The stability and outstanding coherence of dopants and other atom-like defects in tailored host crystals make them a leading platform for the implementation of distributed quantum information processing and sensing in quantum networks.…

Quantum Physics · Physics 2020-11-11 Benjamin Merkel , Alexander Ulanowski , Andreas Reiserer

Systems of photonic crystal cavities coupled to quantum dots are a promising architecture for quantum networking and quantum simulators. The ability to independently tune the frequencies of laterally separated quantum dots is a crucial…

Mesoscale and Nanoscale Physics · Physics 2012-10-15 Susanna M. Thon , Hyochul Kim , Cristian Bonato , Jan Gudat , Jenna Hagemeier , Pierre M. Petroff , Dirk Bouwmeester

The light emission rate of a single quantum dot can be drastically enhanced by embedding it in a resonant semiconductor microcavity. This phenomenon is known as the Purcell effect, and the coupling strength between emitter and cavity can be…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 M. Munsch , A. Mosset , A. Auffèves , Signe Seidelin , J. P. Poizat , J. -M. Gérard , A. Lemaître , I. Sagnes , P. Senellart

We study analytically the dynamics of cavity QED nodes in a practical quantum network. Given a single 3-level $\Lambda$-type atom or quantum dot coupled to a micro-cavity, we derive several necessary and sufficient criteria for the coherent…

Quantum Physics · Physics 2007-05-23 David Fattal , Ray Beausoleil , Yoshihisa Yamamoto

Recently, Grange et al. [Phys. Rev. Lett. 114, 193601 (2015)] showed the possibility of single photon generation with high indistinguishability from a quantum emitter, despite strong pure dephasing, by `funneling' emission into a photonic…

Quantum Physics · Physics 2019-05-17 Hyeongrak Choi , Di Zhu , Yoseob Yoon , Dirk Englund

Sources of pure and indistinguishable single-photons are critical for near-future optical quantum technologies. Recently, color centers hosted by two-dimensional hexagonal boron nitride (hBN) have emerged as a promising platform for high…

Quantum Physics · Physics 2019-08-22 Tobias Vogl , Ruvi Lecamwasam , Ben C. Buchler , Yuerui Lu , Ping Koy Lam

Silicon is vital to the computing industry due to the high quality of its native oxide and well-established doping technologies. Isotopic purification has enabled quantum coherence times on the order of seconds, thereby placing silicon at…

Mesoscale and Nanoscale Physics · Physics 2017-03-10 X. Mi , J. V. Cady , D. M. Zajac , P. W. Deelman , J. R. Petta

Scalable photonic quantum technologies require on-demand single-photon sources with simultaneously high levels of purity, indistinguishability, and efficiency. These key features, however, have only been demonstrated separately in previous…

We present time-resolved spontaneous emission measurements of single quantum dots embedded in photonic crystal waveguides. Quantum dots that couple to the photonic crystal waveguide are found to decay up to 27 times faster than uncoupled…

Quantum Physics · Physics 2008-09-25 T. Lund-Hansen , S. Stobbe , B. Julsgaard , H. Thyrrestrup , T. Sünner , M. Kamp , A. Forchel , P. Lodahl

We study the emission from a molecular photonic cavity formed by two proximal photonic crystal defect cavities containing a small number (<3) of In(Ga)As quantum dots. Under strong excitation we observe photoluminescence from the bonding…

We propose a realizable architecture using one-dimensional transmission line resonators to reach the strong coupling limit of cavity quantum electrodynamics in superconducting electrical circuits. The vacuum Rabi frequency for the coupling…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Alexandre Blais , Ren-Shou Huang , Andreas Wallraff , S. M. Girvin , R. J. Schoelkopf

This chapter introduces cavity-based light-matter quantum interfaces, with a single atom or ion in strong coupling to a high-finesse optical cavity. We discuss the deterministic generation of indistinguishable single photons from these…

Quantum Physics · Physics 2015-02-25 Axel Kuhn

Coupling electromagnetic waves in a cavity and mechanical vibrations via the radiation pressure of the photons [1,2] is a promising platform for investigations of quantum mechanical properties of motion of macroscopic bodies and thereby the…

Mesoscale and Nanoscale Physics · Physics 2015-10-16 J. -M. Pirkkalainen , S. U. Cho , F. Massel , J. Tuorila , T. T. Heikkila , P. J. Hakonen , M. A. Sillanpaa