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We investigate the interaction between single quantum emitters and non-transversally polarised photons for which the electric field vector amplitude has a significant component in the direction of propagation. Even though this situation…

Quantum Physics · Physics 2015-06-12 Christian Junge , Danny O'Shea , Jürgen Volz , Arno Rauschenbeutel

We investigate the single-photon propagation in the one-dimensional waveguide coupled to $N$ two-level atoms. For a waveguide coupled to $N$ distant atoms, the transparency can be induced by coherent interaction at resonance for an $even$…

Quantum Physics · Physics 2013-04-04 Wei-Bin Yan , Heng Fan

Bragg coherent diffraction imaging (BCDI) is a unique and powerful method for tracking three-dimensional strain fields non-destructively. While BCDI has been successfully applied to many scientific research fields and receives high demands,…

Applied Physics · Physics 2023-06-21 Jiangtao Zhao , Ivan A. Vartanyants , Fucai Zhang

Bright single photon emission from single quantum dots in suspended circular Bragg grating microcavities is demonstrated. This geometry has been designed to achieve efficient (> 50 %) single photon extraction into a near-Gaussian shaped…

Quantum Physics · Physics 2013-03-08 Serkan Ates , Luca Sapienza , Marcelo Davanco , Antonio Badolato , Kartik Srinivasan

A scheme for entangling distant atoms is realized, as proposed in the seminal paper by Cabrillo et al. [Phys. Rev. A 59, 1025 (1999)]. The protocol is based on quantum interference and detection of a single photon scattered from two…

Quantum Physics · Physics 2015-06-05 L. Slodička , G. Hétet , N. Röck , P. Schindler , M. Hennrich , R. Blatt

A cascade of two-level superconducting artificial atoms -- a source and a probe -- strongly coupled to a semi-infinite waveguide is a promising tool for observing nontrivial phenomena in quantum nonlinear optics. The probe atom can scatter…

Experimental advances in the fabrication and characterization of few-layer materials stacked at a relative twist of small angle have recently shown the emergence of flat energy bands. As a consequence electron interactions become relevant,…

Strongly Correlated Electrons · Physics 2020-03-02 D. M. Kennes , L. Xian , M. Claassen , A. Rubio

Arrays of neutral atoms trapped in optical tweezers have emerged as a leading platform for quantum information processing and quantum simulation due to their scalability, reconfigurable connectivity, and high-fidelity operations. Individual…

Quantum Physics · Physics 2024-07-31 Shankar G. Menon , Noah Glachman , Matteo Pompili , Alan Dibos , Hannes Bernien

We investigate the transient coherent transmission of light through an optically thick cold stron-tium gas. We observe a coherent superflash just after an abrupt probe extinction, with peak intensity more than three times the incident one.…

Atomic Physics · Physics 2014-12-05 C. C. Kwong , T. Yang , M. S. Pramod , K. Pandey , D. Delande , R. Pierrat , D. Wilkowski

Efficient generation of entangled photon pairs at telecom wavelengths is a key ingredient for long-range quantum networks. While embedding semiconductor quantum dots into hybrid circular Bragg gratings has proven effective, it conflicts…

Quantum Physics · Physics 2024-04-09 Chenxi Ma , Jingzhong Yang , Pengji Li , Eddy P. Rugeramigabo , Michael Zopf , Fei Ding

Convergent beam electron diffraction is routinely applied for studying deformation and local strain in thick crystals by matching the crystal structure to the observed intensity distributions. Recently, it has been demonstrated that CBED…

Mesoscale and Nanoscale Physics · Physics 2020-03-31 Tatiana Latychevskaia , Colin Robert Woods , Yi Bo Wang , Matthew Holwill , Eric Prestat , Sarah J. Haigh , Kostya S. Novoselov

Two-dimensional regular arrays of atoms are a promising platform for quantum networks, with collective subradiant states providing long-lived storage and collimated emission allowing for natural coherent links between arrays in free space.…

Atomic Physics · Physics 2022-09-13 K. E. Ballantine , J. Ruostekoski

We report the observation of entanglement between a single trapped atom and a single photon at remote locations. The degree of coherence of the entangled atom-photon pair is verified via appropriate local correlation measurements, after…

Quantum Physics · Physics 2009-11-13 W. Rosenfeld , F. Hocke , F. Henkel , M. Krug , J. Volz , M. Weber , H. Weinfurter

Coupling photons to Rydberg excitations in a cold atomic gas yields unprecedentedly large optical nonlinearities at the level of individual light quanta, where the formation of nearby dark-state polaritons is blocked by the strong…

Quantum Physics · Physics 2017-07-19 Callum R. Murray , Thomas Pohl

We show that a saturable single-frequency elastic T-matrix approach to scattering of light by atoms agrees remarkably well with a master equation description in the regime of unsaturated atoms, or for large separation between the atoms. If…

Disordered Systems and Neural Networks · Physics 2007-05-23 Tom Savels , Allard P. Mosk , Ad Lagendijk

We report on the observation of multimode strong coupling of a small ensemble of atoms interacting with the field of a 30-m long fiber resonator containing a nanofiber section. The collective light--matter coupling strength exceeds the free…

We report the observation of entanglement between a single trapped atom and a single photon at a wavelength suitable for low-loss communication over large distances, thereby achieving a crucial step towards long range quantum networks. To…

When a resonant laser sent on an optically thick cold atomic cloud is abruptly switched off, a coherent flash of light is emitted in the forward direction. This transient phenomenon is observed due to the highly resonant character of the…

Atomic Physics · Physics 2015-05-27 Maryvonne Chalony , Romain Pierrat , Dominique Delande , David Wilkowski

Resonance fluorescence from atomic systems consists of a single spectral peak that evolves into a Mollow triplet for a strong excitation field. Photons from different peaks of the triplet show distinct photon correlation that make the…

Quantum Physics · Physics 2022-12-29 Boon Long Ng , Chang Hoong Chow , Christian Kurtsiefer

Advanced quantum technologies, such as quantum simulation, computation, and metrology are thriving for the implementation of large-scale configurations of identical quantum systems. Sets of atoms and molecules have the advantage of having…

Quantum Physics · Physics 2019-05-15 Malte Schlosser , Jens Kruse , Gerhard Birkl