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Deterministically tailoring optical Fock states beyond the single-photon level is crucial for boson sampling, loss-tolerant photonic qubits, and quantum-enhanced sensing, however has yet remained elusive. Here, we report an…

Sources of single photons are key elements in the study of basic quantum optical concepts and applications in quantum information science. Among the different sources available, semiconductor quantum dots excel with their straight forward…

Mesoscale and Nanoscale Physics · Physics 2015-10-28 Dirk Heinze , Artur Zrenner , Stefan Schumacher

A single photon source is realized with a cold atomic ensemble ($^{87}$Rb atoms). In the experiment, single photons, which is initially stored in an atomic quantum memory generated by Raman scattering of a laser pulse, can be emitted…

An efficient, scalable source of shaped single photons that can be directly integrated with optical fiber networks and quantum memories is at the heart of many protocols in quantum information science. We demonstrate a deterministic source…

Recently we proposed the use of a single collective Mie mode of coupled dielectric resonators arranged in metastructures designed to simultaneously enhance the emission rate, control the direction, and propagation of emitted photons from an…

Optics · Physics 2018-09-18 Swarnabha Chattaraj , Jiefei Zhang , Siyuan Lu , Anupam Madhukar

We demonstrate tunable on-chip single photon sources using the Stark tuning of single quantum dot (QD) excitonic transitions in short photonic crystal waveguides (PhC WGs). The emission of single QDs can be tuned in real-time by 9 nm with…

Mesoscale and Nanoscale Physics · Physics 2015-06-11 Thang Ba Hoang , Johannes Beetz , Matthias Lermer , Leonardo Midolo , Martin Kamp , Sven Höfling , Andrea Fiore

We demonstrate on-chip generation of indistinguishable photons based on a nanowire quantum dot. From a growth substrate containing arrays of positioned-controlled single dot nanowires, we select a single nanowire which is placed on a SiN…

The prototype of a quantum random number generator is a single photon which impinges onto a beam splitter and is then detected by single photon detectors at one of the two output paths. Prior to detection, the photon is in a quantum…

Quantum Physics · Physics 2020-07-16 Xing Chen , Johannes Greiner , Jörg Wrachtrup , Ilja Gerhardt

The prospect of quantum networks, in which quantum information is carried by single photons in photonic circuits, has long been the driving force behind the effort to achieve all-optical routing of single photons. Here we realize the most…

Quantum Physics · Physics 2015-01-08 Itay Shomroni , Serge Rosenblum , Yulia Lovsky , Orel Bechler , Gabriel Guendelman , Barak Dayan

Engineering the coupling between fundamental quantum excitations is at the heart of quantum science and technologies. A significant case is the creation of quantum light sources in which coupling between single photons and phonons can be…

Mesoscale and Nanoscale Physics · Physics 2023-02-28 Adina Ripin , Ruoming Peng , Xiaowei Zhang , Srivatsa Chakravarthi , Minhao He , Xiaodong Xu , Kai-Mei Fu , Ting Cao , Mo Li

Single-photon emitters in solid-state systems are important building blocks for scalable quantum technologies. Recently, quantum light emitters have been discovered in the wide-gap van der Waals insulator hBN. These color centers have…

Single-photon emitters are an essential component of quantum networks, and defects or impurities in semiconductors are a promising platform to realize such quantum emitters. Here we present a model that encapsulates the essential physics of…

Materials Science · Physics 2025-06-17 Mark E. Turiansky , Kamyar Parto , Galan Moody , Chris G. Van de Walle

We report the observation of all-optically tunable Raman fluorescence from a single quantum dot. The Raman photons are produced in an optically-driven Lambda-system defined by subjecting the single electron charged quantum dot to a magnetic…

Mesoscale and Nanoscale Physics · Physics 2009-04-10 G. Fernandez , T. Volz , R. Desbuquois , A. Badolato , A. Imamoglu

We propose a scheme for triggering a dissipation dominated highly efficient excitation transfer from a single photon wave packet to a single quantum emitter. This single photon induced optical pumping turns dominant dissipative processes,…

Quantum Physics · Physics 2016-06-01 Nils Trautmann , Gernot Alber

We present finite element method based simulation results for on-chip controlled photon interference in optical networks based upon interconnected arrays of primitives comprising a single photon source (SPS) embedded in lithographically…

Optics · Physics 2018-11-19 Swarnabha Chattaraj , Jiefei Zhang , Siyuan Lu , Anupam Madhukar

The reliable, deterministic production of trustworthy high-quality single photons is a critical component of discrete variable, optical quantum technology. For single-photon based fully error-corrected quantum computing systems, it is…

Quantum Physics · Physics 2024-11-20 Sebastian Brandhofer , Casey R. Myers , Simon J. Devitt , Ilia Polian

An on-demand single-photon source is a fundamental building block in quantum science and technology. We experimentally demonstrate the proof of concept for a scheme to generate on-demand single photons via actively multiplexing several…

Quantum Physics · Physics 2013-05-29 Xiao-song Ma , Stefan Zotter , Johannes Kofler , Thomas Jennewein , Anton Zeilinger

We propose an experimentally accessible single-photon routing scheme using a $\bigtriangleup$-type three-level atom embedded in quantum multi-channels composed of coupled-resonator waveguides. Via the on-demand classical field applied to…

Quantum Physics · Physics 2013-10-30 Lan Zhou , Li-Ping Yang , Yong Li , C. P. Sun

Integrated photonic circuits provide a versatile toolbox of functionalities for advanced quantum optics applications. Here, we demonstrate an essential component of such a system in the form of a Purcell enhanced single-photon source based…

Mesoscale and Nanoscale Physics · Physics 2020-09-11 Łukasz Dusanowski , Dominik Köck , Eunso Shin , Soon-Hong Kwon , Christian Schneider , Sven Höfling

In this paper we investigate the spin-current and its shot-noise spectrum in a single-molecule quantum dot coupled with a local phonon mode. We pay special attention on the effect of phonon on the quantum transport property. The…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Hui Yu , J. -Q. Liang
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