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The optical interference constitutes a paramount resource in modern physics. At the scale of individual atoms and photons, it is a diverse concept that causes different coherent phenomena. We present the experimental characterization of…

Quantum Physics · Physics 2022-09-21 A. Kovalenko , D. Babjak , A. Lešundák , L. Podhora , L. Lachman , P. Obšil , T. Pham , O. Číp , R. Filip , L. Slodička

Electromagnetic signals in circuits consist of discrete photons, though conventional voltage sources can only generate classical fields with a coherent superposition of many different photon numbers. While these classical signals can…

Single-photons are key elements of many future quantum technologies, be it for the realisation of large-scale quantum communication networks for quantum simulation of chemical and physical processes or for connecting quantum memories in a…

Quantum light sources are characterized by their distinctive statistical distribution of photons. For example, single photons and correlated photon pairs exhibit antibunching and reduced variance in the number distribution that is…

Optics · Physics 2019-03-25 Sunil Mittal , Elizabeth A. Goldschmidt , Mohammad Hafezi

Narrowband single photons that couple well to atomic ensembles could prove essential for future quantum networks, but the efficient generation of such photons remains an outstanding challenge. We realize a spatially-multiplexed heralded…

Quantum Physics · Physics 2021-10-14 Omri Davidson , Ran Finkelstein , Eilon Poem , Ofer Firstenberg

The generation of single photons using solid-state quantum emitters is pivotal for advancing photonic quantum technologies, particularly in quantum communication. As the field continuously advances towards practical use cases and beyond…

Versatile, tunable, and potentially scalable single-photon sources are a key asset in emergent photonic quantum technologies. In this work, a single-photon source based on WS$_2$ micro-domes, created via hydrogen ion irradiation, is…

Development of stable room-temperature bright single-photon emitters using atomic defects in hexagonal-boron nitride flakes (h-BN) provides significant promises for quantum technologies. However, an outstanding challenge in h-BN is creating…

Lasers and LEDs display a statistical distribution in the number of photons emitted in a given time interval. New applications exploiting the quantum properties of light require sources for which either individual photons, or pairs, are…

Quantum Physics · Physics 2015-05-13 Andrew J Shields

We report a tunable single-photon source based on a single trapped ion. Employing spontaneous Raman scattering and in-vacuum optics with large numerical aperture, single photons are efficiently created with controlled temporal shape and…

Quantum Physics · Physics 2015-05-13 M. Almendros , J. Huwer , N. Piro , F. Rohde , C. Schuck , M. Hennrich , F. Dubin , J. Eschner

Emitters of indistinguishable single photons are crucial for the growing field of quantum technologies. To realize scalability and increase the complexity of quantum optics technologies, multiple independent yet identical single photon…

Single photon emitters are indispensable to photonic quantum technologies. Here we demonstrate waveform-controlled high-purity single photons from room-temperature colloidal quantum dots. The purity of the single photons does not vary with…

Quantum Physics · Physics 2017-10-25 S. -W. Feng , C. -Y. Cheng , C. -Y. Wei , J. -H. Yang , Y. -R. Chen , Y. -W. Chuang , Y. -H. Fan , C. -S. Chuu

Colloidal quantum dots have garnered active research interest as quantum emitters due to their robust synthesis process and straightforward integration with nanophotonic platforms. However, obtaining indistinguishable photons from the…

We demonstrate multiphoton interference using a resource-efficient frequency multiplexing scheme, suitable for quantum information applications that demand multiple indistinguishable and pure single photons. In our source,…

The realization of high-quality special nonclassical states beyond strong single atom-cavity coupling regime is a fundamental element in quantum information science. Here, we study the nonclassical photon emission in a single spin-1 atom…

Quantum Physics · Physics 2023-07-31 Jing Tang , Yuangang Deng

We study the multi-channel quantum routing of the single photons in a waveguide-emitter system. The channels are composed by the waveguides and are connected by intermediate two-level emitters. By adjusting the intermediate emitters, the…

Quantum Physics · Physics 2014-04-30 Wei-Bin Yan , Heng Fan

The deterministic production of single-photons from two dimensional materials promises to usher in a new generation of photonic quantum devices. In this work, we outline criteria by which single-photon emission can be realised in two…

Mesoscale and Nanoscale Physics · Physics 2020-08-27 Joshua J. P. Thompson , Samuel Brem , Hanlin Fang , Joey Frey , Saroj P. Dash , Witlef Wieczorek , Ermin Malic

Single-photon sources are in high demand for quantum information applications. A paradigmatic way to achieve single-photon emission is through anharmonicity in the energy levels, such that the absorption of a single photon from a coherent…

Quantum Physics · Physics 2024-04-15 Anael Ben-Asher , Antonio I. Fernández-Domínguez , Johannes Feist

The production of single photons using rephased amplified spontaneous emission is examined. This process produces single photons on demand with high efficiency by detecting the spontaneous emission from an atomic ensemble, then applying a…

Silicon photonics enables scaling of quantum photonic systems by allowing the creation of extensive, low-loss, reconfigurable networks linking various functional on-chip elements. Inclusion of single quantum emitters onto photonic circuits,…