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  • Article |

    The first operation of the European X-ray free-electron laser facility accelerator based on superconducting technology is reported. The maximum electron energy is 17.5 GeV. A laser average power of 6 W is achieved at a photon energy of 9.3 keV.

    • W. Decking
    • , S. Abeghyan
    • , P. Abramian
    • , A. Abramsky
    • , A. Aguirre
    • , C. Albrecht
    • , P. Alou
    • , M. Altarelli
    • , P. Altmann
    • , K. Amyan
    • , V. Anashin
    • , E. Apostolov
    • , K. Appel
    • , D. Auguste
    • , V. Ayvazyan
    • , S. Baark
    • , F. Babies
    • , N. Baboi
    • , P. Bak
    • , V. Balandin
    • , R. Baldinger
    • , B. Baranasic
    • , S. Barbanotti
    • , O. Belikov
    • , V. Belokurov
    • , L. Belova
    • , V. Belyakov
    • , S. Berry
    • , M. Bertucci
    • , B. Beutner
    • , A. Block
    • , M. Blöcher
    • , T. Böckmann
    • , C. Bohm
    • , M. Böhnert
    • , V. Bondar
    • , E. Bondarchuk
    • , M. Bonezzi
    • , P. Borowiec
    • , C. Bösch
    • , U. Bösenberg
    • , A. Bosotti
    • , R. Böspflug
    • , M. Bousonville
    • , E. Boyd
    • , Y. Bozhko
    • , A. Brand
    • , J. Branlard
    • , S. Briechle
    • , F. Brinker
    • , S. Brinker
    • , R. Brinkmann
    • , S. Brockhauser
    • , O. Brovko
    • , H. Brück
    • , A. Brüdgam
    • , L. Butkowski
    • , T. Büttner
    • , J. Calero
    • , E. Castro-Carballo
    • , G. Cattalanotto
    • , J. Charrier
    • , J. Chen
    • , A. Cherepenko
    • , V. Cheskidov
    • , M. Chiodini
    • , A. Chong
    • , S. Choroba
    • , M. Chorowski
    • , D. Churanov
    • , W. Cichalewski
    • , M. Clausen
    • , W. Clement
    • , C. Cloué
    • , J. A. Cobos
    • , N. Coppola
    • , S. Cunis
    • , K. Czuba
    • , M. Czwalinna
    • , B. D’Almagne
    • , J. Dammann
    • , H. Danared
    • , A. de Zubiaurre Wagner
    • , A. Delfs
    • , T. Delfs
    • , F. Dietrich
    • , T. Dietrich
    • , M. Dohlus
    • , M. Dommach
    • , A. Donat
    • , X. Dong
    • , N. Doynikov
    • , M. Dressel
    • , M. Duda
    • , P. Duda
    • , H. Eckoldt
    • , W. Ehsan
    • , J. Eidam
    • , F. Eints
    • , C. Engling
    • , U. Englisch
    • , A. Ermakov
    • , K. Escherich
    • , J. Eschke
    • , E. Saldin
    • , M. Faesing
    • , A. Fallou
    • , M. Felber
    • , M. Fenner
    • , B. Fernandes
    • , J. M. Fernández
    • , S. Feuker
    • , K. Filippakopoulos
    • , K. Floettmann
    • , V. Fogel
    • , M. Fontaine
    • , A. Francés
    • , I. Freijo Martin
    • , W. Freund
    • , T. Freyermuth
    • , M. Friedland
    • , L. Fröhlich
    • , M. Fusetti
    • , J. Fydrych
    • , A. Gallas
    • , O. García
    • , L. Garcia-Tabares
    • , G. Geloni
    • , N. Gerasimova
    • , C. Gerth
    • , P. Geßler
    • , V. Gharibyan
    • , M. Gloor
    • , J. Głowinkowski
    • , A. Goessel
    • , Z. Gołębiewski
    • , N. Golubeva
    • , W. Grabowski
    • , W. Graeff
    • , A. Grebentsov
    • , M. Grecki
    • , T. Grevsmuehl
    • , M. Gross
    • , U. Grosse-Wortmann
    • , J. Grünert
    • , S. Grunewald
    • , P. Grzegory
    • , G. Feng
    • , H. Guler
    • , G. Gusev
    • , J. L. Gutierrez
    • , L. Hagge
    • , M. Hamberg
    • , R. Hanneken
    • , E. Harms
    • , I. Hartl
    • , A. Hauberg
    • , S. Hauf
    • , J. Hauschildt
    • , J. Hauser
    • , J. Havlicek
    • , A. Hedqvist
    • , N. Heidbrook
    • , F. Hellberg
    • , D. Henning
    • , O. Hensler
    • , T. Hermann
    • , A. Hidvégi
    • , M. Hierholzer
    • , H. Hintz
    • , F. Hoffmann
    • , Markus Hoffmann
    • , Matthias Hoffmann
    • , Y. Holler
    • , M. Hüning
    • , A. Ignatenko
    • , M. Ilchen
    • , A. Iluk
    • , J. Iversen
    • , J. Iversen
    • , M. Izquierdo
    • , L. Jachmann
    • , N. Jardon
    • , U. Jastrow
    • , K. Jensch
    • , J. Jensen
    • , M. Jeżabek
    • , M. Jidda
    • , H. Jin
    • , N. Johannson
    • , R. Jonas
    • , W. Kaabi
    • , D. Kaefer
    • , R. Kammering
    • , H. Kapitza
    • , S. Karabekyan
    • , S. Karstensen
    • , K. Kasprzak
    • , V. Katalev
    • , D. Keese
    • , B. Keil
    • , M. Kholopov
    • , M. Killenberger
    • , B. Kitaev
    • , Y. Klimchenko
    • , R. Klos
    • , L. Knebel
    • , A. Koch
    • , M. Koepke
    • , S. Köhler
    • , W. Köhler
    • , N. Kohlstrunk
    • , Z. Konopkova
    • , A. Konstantinov
    • , W. Kook
    • , W. Koprek
    • , M. Körfer
    • , O. Korth
    • , A. Kosarev
    • , K. Kosiński
    • , D. Kostin
    • , Y. Kot
    • , A. Kotarba
    • , T. Kozak
    • , V. Kozak
    • , R. Kramert
    • , M. Krasilnikov
    • , A. Krasnov
    • , B. Krause
    • , L. Kravchuk
    • , O. Krebs
    • , R. Kretschmer
    • , J. Kreutzkamp
    • , O. Kröplin
    • , K. Krzysik
    • , G. Kube
    • , H. Kuehn
    • , N. Kujala
    • , V. Kulikov
    • , V. Kuzminych
    • , D. La Civita
    • , M. Lacroix
    • , T. Lamb
    • , A. Lancetov
    • , M. Larsson
    • , D. Le Pinvidic
    • , S. Lederer
    • , T. Lensch
    • , D. Lenz
    • , A. Leuschner
    • , F. Levenhagen
    • , Y. Li
    • , J. Liebing
    • , L. Lilje
    • , T. Limberg
    • , D. Lipka
    • , B. List
    • , J. Liu
    • , S. Liu
    • , B. Lorbeer
    • , J. Lorkiewicz
    • , H. H. Lu
    • , F. Ludwig
    • , K. Machau
    • , W. Maciocha
    • , C. Madec
    • , C. Magueur
    • , C. Maiano
    • , I. Maksimova
    • , K. Malcher
    • , T. Maltezopoulos
    • , E. Mamoshkina
    • , B. Manschwetus
    • , F. Marcellini
    • , G. Marinkovic
    • , T. Martinez
    • , H. Martirosyan
    • , W. Maschmann
    • , M. Maslov
    • , A. Matheisen
    • , U. Mavric
    • , J. Meißner
    • , K. Meissner
    • , M. Messerschmidt
    • , N. Meyners
    • , G. Michalski
    • , P. Michelato
    • , N. Mildner
    • , M. Moe
    • , F. Moglia
    • , C. Mohr
    • , S. Mohr
    • , W. Möller
    • , M. Mommerz
    • , L. Monaco
    • , C. Montiel
    • , M. Moretti
    • , I. Morozov
    • , P. Morozov
    • , D. Mross
    • , J. Mueller
    • , C. Müller
    • , J. Müller
    • , K. Müller
    • , J. Munilla
    • , A. Münnich
    • , V. Muratov
    • , O. Napoly
    • , B. Näser
    • , N. Nefedov
    • , Reinhard Neumann
    • , Rudolf Neumann
    • , N. Ngada
    • , D. Noelle
    • , F. Obier
    • , I. Okunev
    • , J. A. Oliver
    • , M. Omet
    • , A. Oppelt
    • , A. Ottmar
    • , M. Oublaid
    • , C. Pagani
    • , R. Paparella
    • , V. Paramonov
    • , C. Peitzmann
    • , J. Penning
    • , A. Perus
    • , F. Peters
    • , B. Petersen
    • , A. Petrov
    • , I. Petrov
    • , S. Pfeiffer
    • , J. Pflüger
    • , S. Philipp
    • , Y. Pienaud
    • , P. Pierini
    • , S. Pivovarov
    • , M. Planas
    • , E. Pławski
    • , M. Pohl
    • , J. Polinski
    • , V. Popov
    • , S. Prat
    • , J. Prenting
    • , G. Priebe
    • , H. Pryschelski
    • , K. Przygoda
    • , E. Pyata
    • , B. Racky
    • , A. Rathjen
    • , W. Ratuschni
    • , S. Regnaud-Campderros
    • , K. Rehlich
    • , D. Reschke
    • , C. Robson
    • , J. Roever
    • , M. Roggli
    • , J. Rothenburg
    • , E. Rusiński
    • , R. Rybaniec
    • , H. Sahling
    • , M. Salmani
    • , L. Samoylova
    • , D. Sanzone
    • , F. Saretzki
    • , O. Sawlanski
    • , J. Schaffran
    • , H. Schlarb
    • , M. Schlösser
    • , V. Schlott
    • , C. Schmidt
    • , F. Schmidt-Foehre
    • , M. Schmitz
    • , M. Schmökel
    • , T. Schnautz
    • , E. Schneidmiller
    • , M. Scholz
    • , B. Schöneburg
    • , J. Schultze
    • , C. Schulz
    • , A. Schwarz
    • , J. Sekutowicz
    • , D. Sellmann
    • , E. Semenov
    • , S. Serkez
    • , D. Sertore
    • , N. Shehzad
    • , P. Shemarykin
    • , L. Shi
    • , M. Sienkiewicz
    • , D. Sikora
    • , M. Sikorski
    • , A. Silenzi
    • , C. Simon
    • , W. Singer
    • , X. Singer
    • , H. Sinn
    • , K. Sinram
    • , N. Skvorodnev
    • , P. Smirnow
    • , T. Sommer
    • , A. Sorokin
    • , M. Stadler
    • , M. Steckel
    • , B. Steffen
    • , N. Steinhau-Kühl
    • , F. Stephan
    • , M. Stodulski
    • , M. Stolper
    • , A. Sulimov
    • , R. Susen
    • , J. Świerblewski
    • , C. Sydlo
    • , E. Syresin
    • , V. Sytchev
    • , J. Szuba
    • , N. Tesch
    • , J. Thie
    • , A. Thiebault
    • , K. Tiedtke
    • , D. Tischhauser
    • , J. Tolkiehn
    • , S. Tomin
    • , F. Tonisch
    • , F. Toral
    • , I. Torbin
    • , A. Trapp
    • , D. Treyer
    • , G. Trowitzsch
    • , T. Trublet
    • , T. Tschentscher
    • , F. Ullrich
    • , M. Vannoni
    • , P. Varela
    • , G. Varghese
    • , G. Vashchenko
    • , M. Vasic
    • , C. Vazquez-Velez
    • , A. Verguet
    • , S. Vilcins-Czvitkovits
    • , R. Villanueva
    • , B. Visentin
    • , M. Viti
    • , E. Vogel
    • , E. Volobuev
    • , R. Wagner
    • , N. Walker
    • , T. Wamsat
    • , H. Weddig
    • , G. Weichert
    • , H. Weise
    • , R. Wenndorf
    • , M. Werner
    • , R. Wichmann
    • , C. Wiebers
    • , M. Wiencek
    • , T. Wilksen
    • , I. Will
    • , L. Winkelmann
    • , M. Winkowski
    • , K. Wittenburg
    • , A. Witzig
    • , P. Wlk
    • , T. Wohlenberg
    • , M. Wojciechowski
    • , F. Wolff-Fabris
    • , G. Wrochna
    • , K. Wrona
    • , M. Yakopov
    • , B. Yang
    • , F. Yang
    • , M. Yurkov
    • , I. Zagorodnov
    • , P. Zalden
    • , A. Zavadtsev
    • , D. Zavadtsev
    • , A. Zhirnov
    • , A. Zhukov
    • , V. Ziemann
    • , A. Zolotov
    • , N. Zolotukhina
    • , F. Zummack
    •  & D. Zybin

  • Article |

    Combining the advantages of ultrasound and light for fluorescence imaging, an imaging technique termed fluorescence and ultrasound-modulated light correlation, or FLUX, that leverages the dynamic nature of the medium is reported to uniquely resolve fluorophore distribution even when the speckles decorrelate fast.

    • Haowen Ruan
    • , Yan Liu
    • , Jian Xu
    • , Yujia Huang
    •  & Changhuei Yang

  • Article |

    Carefully designed hollow-core antiresonant fibres support a pair of orthogonal polarization modes with a level of purity and cross-coupling that is orders of magnitude lower than other fibre designs and beyond the fundamental Rayleigh scattering limit of glass core fibres.

    • A. Taranta
    • , E. Numkam Fokoua
    • , S. Abokhamis Mousavi
    • , J. R. Hayes
    • , T. D. Bradley
    • , G. T. Jasion
    •  & F. Poletti

  • Article |

    The use of a photonic integrated circuit to both hold a biological sample and generate the necessary light patterns for structured illumination microscopy promises convenient super-resolution imaging.

    • Øystein Ivar Helle
    • , Firehun Tsige Dullo
    • , Marcel Lahrberg
    • , Jean-Claude Tinguely
    • , Olav Gaute Hellesø
    •  & Balpreet Singh Ahluwalia

  • News & Views |

    Exciton funnelling due to non-homogeneous strain was previously thought of as an efficient neutral exciton transport mechanism. New findings suggest that exciton funnelling might be negligible compared with another strain-dependent process, the conversion of neutral excitons into trions.

    • Riccardo Frisenda
    •  & Andres Castellanos-Gomez

  • News & Views |

    Using a photonic crystal slab combined with a conventional optical imaging system, a two-dimensional optical image differentiator is experimentally demonstrated for edge detection.

    • Wei Yan
    •  & Min Qiu

  • Meeting Report |

    Delegates at the BiOS symposium heard how artificial intelligence can transform medical imaging, with its ability to improve quality, speed and molecular specificity.

    • Rachel Won

  • Editorial |

    Integrated quantum photonic chips offer the promise of a convenient, scalable platform for performing tasks such as quantum communication and information processing.

  • News & Views |

    Dark-field microscopy is a widely used imaging method that emphasizes sharp edges and other small features, but typically requires specialized microscope components. Researchers have now engineered special substrates that enable dark-field microscopy using simple bright-field microscopes.

    • Mikhail A. Kats

  • Article |

    A metasurface laser generates orbital angular momentum states with quantum numbers reaching ℓ = 100. Simultaneous output vortex beams, with Δℓ as great as 90, are demonstrated in the visible regime.

    • Hend Sroor
    • , Yao-Wei Huang
    • , Bereneice Sephton
    • , Darryl Naidoo
    • , Adam Vallés
    • , Vincent Ginis
    • , Cheng-Wei Qiu
    • , Antonio Ambrosio
    • , Federico Capasso
    •  & Andrew Forbes

  • Article |

    By harnessing the excitonic resonances of a monolayer of WS2 in the visible spectral range, large-area, actively tunable and atomically thin optical lenses can be realized.

    • Jorik van de Groep
    • , Jung-Hwan Song
    • , Umberto Celano
    • , Qitong Li
    • , Pieter G. Kik
    •  & Mark L. Brongersma

  • Article |

    Nanophotonic microwave synthesizers in the X-band (10 GHz, for radar) and K-band (20 GHz, for 5G), based on integrated soliton microcombs driven by a low-noise fibre laser, link the fields of microwave photonics and integrated microcombs.

    • Junqiu Liu
    • , Erwan Lucas
    • , Arslan S. Raja
    • , Jijun He
    • , Johann Riemensberger
    • , Rui Ning Wang
    • , Maxim Karpov
    • , Hairun Guo
    • , Romain Bouchand
    •  & Tobias J. Kippenberg

  • Review Article |

    The Review summarizes the progress of hybrid quantum photonics integration in terms of its important design considerations and fabrication approaches, and highlights some successful realizations of key physical resources for building integrated quantum devices, such as quantum teleporters, quantum repeaters and quantum simulators.

    • Ali W. Elshaari
    • , Wolfram Pernice
    • , Kartik Srinivasan
    • , Oliver Benson
    •  & Val Zwiller

  • Article |

    Robust terahertz wave transport is demonstrated on a silicon chip using the valley Hall topological phase. Error-free communication is achieved at a data rate of 11 Gbit s−1, enabling real-time transmission of uncompressed 4K high-definition video.

    • Yihao Yang
    • , Yuichiro Yamagami
    • , Xiongbin Yu
    • , Prakash Pitchappa
    • , Julian Webber
    • , Baile Zhang
    • , Masayuki Fujita
    • , Tadao Nagatsuma
    •  & Ranjan Singh

  • Letter |

    A pair of transportable optical lattice clocks with 10−18 uncertainty is developed. The relativistic redshift predicted by the theory of general relativity has been tested at the 10–5 level by the two optical clocks with a height difference of 450 m on the ground.

    • Masao Takamoto
    • , Ichiro Ushijima
    • , Noriaki Ohmae
    • , Toshihiro Yahagi
    • , Kensuke Kokado
    • , Hisaaki Shinkai
    •  & Hidetoshi Katori

  • News & Views |

    Two articles in Nature Photonics demonstrate how Einstein–Podolsky–Rosen entanglement can reduce quantum noise in gravitational-wave interferometers.

    • Pierre-François Cohadon

  • News & Views |

    The news that superconducting nanowire detectors can detect single photons with a timing precision of just a few picoseconds will benefit applications ranging from sensing to quantum communications.

    • Robert H. Hadfield

  • News & Views |

    Low-loss composite systems based on integrating transition metal dichalcogenide monolayers on silicon nitride waveguides exhibit an unexpectedly strong electro-refractive response at near-infrared wavelengths, which is crucial for optical communications.

    • Sylvia Xin Li
    •  & Michael S. Strano

  • News & Views |

    Technology borrowed from electron accelerator and beam physics looks set to push the performance of ultrafast-electron-diffraction-based pump–probe studies of matter.

    • Pietro Musumeci

  • Article |

    Transscleral optical phase imaging, which is based on transscleral flood illumination of the retina, is demonstrated to provide cellular-resolution, label-free, high-contrast images of the retinal layers over a large field of view without the drawback of a long exposure time.

    • Timothé Laforest
    • , Mathieu Künzi
    • , Laura Kowalczuk
    • , Dino Carpentras
    • , Francine Behar-Cohen
    •  & Christophe Moser

  • Article |

    Optical nonlinearity is exploited for non-reciprocal transmission and integrated frequency comb-based optical ranging.

    • Ki Youl Yang
    • , Jinhie Skarda
    • , Michele Cotrufo
    • , Avik Dutt
    • , Geun Ho Ahn
    • , Mahmoud Sawaby
    • , Dries Vercruysse
    • , Amin Arbabian
    • , Shanhui Fan
    • , Andrea Alù
    •  & Jelena Vučković

  • Letter |

    An optoelectronic device that measures and suppresses the phase noise of a source has been realized in an integrated silicon platform.

    • Mohamad Hossein Idjadi
    •  & Firooz Aflatouni

  • Letter |

    Optically induced magnetization is experimentally demonstrated using gold nanoparticles. The inverse-Faraday-effect-enabled magnetization may lead to new types of compact optical isolator.

    • Oscar Hsu-Cheng Cheng
    • , Dong Hee Son
    •  & Matthew Sheldon

  • Article |

    Continuous-wave lasing in strained GeSn alloys is reported at temperatures of up to 100 K. The approach offers a route towards a group-IV-on-silicon laser.

    • Anas Elbaz
    • , Dan Buca
    • , Nils von den Driesch
    • , Konstantinos Pantzas
    • , Gilles Patriarche
    • , Nicolas Zerounian
    • , Etienne Herth
    • , Xavier Checoury
    • , Sébastien Sauvage
    • , Isabelle Sagnes
    • , Antonino Foti
    • , Razvigor Ossikovski
    • , Jean-Michel Hartmann
    • , Frédéric Boeuf
    • , Zoran Ikonic
    • , Philippe Boucaud
    • , Detlev Grützmacher
    •  & Moustafa El Kurdi

  • Article |

    Knowledge about detection latency provides a guideline to reduce the timing jitter of niobium nitride superconducting nanowire single-photon detectors. A timing jitter of 2.6 ps at visible wavelength and 4.3 ps at 1,550 nm is achieved.

    • Boris Korzh
    • , Qing-Yuan Zhao
    • , Jason P. Allmaras
    • , Simone Frasca
    • , Travis M. Autry
    • , Eric A. Bersin
    • , Andrew D. Beyer
    • , Ryan M. Briggs
    • , Bruce Bumble
    • , Marco Colangelo
    • , Garrison M. Crouch
    • , Andrew E. Dane
    • , Thomas Gerrits
    • , Adriana E. Lita
    • , Francesco Marsili
    • , Galan Moody
    • , Cristián Peña
    • , Edward Ramirez
    • , Jake D. Rezac
    • , Neil Sinclair
    • , Martin J. Stevens
    • , Angel E. Velasco
    • , Varun B. Verma
    • , Emma E. Wollman
    • , Si Xie
    • , Di Zhu
    • , Paul D. Hale
    • , Maria Spiropulu
    • , Kevin L. Silverman
    • , Richard P. Mirin
    • , Sae Woo Nam
    • , Alexander G. Kozorezov
    • , Matthew D. Shaw
    •  & Karl K. Berggren

  • Letter |

    Phase-matching quantum key distribution is implemented with a 502 km ultralow-loss optical fibre. The fluctuations of the laser initial phases and frequencies are suppressed by the laser injection technique and the phase post-compensation method.

    • Xiao-Tian Fang
    • , Pei Zeng
    • , Hui Liu
    • , Mi Zou
    • , Weijie Wu
    • , Yan-Lin Tang
    • , Ying-Jie Sheng
    • , Yao Xiang
    • , Weijun Zhang
    • , Hao Li
    • , Zhen Wang
    • , Lixing You
    • , Ming-Jun Li
    • , Hao Chen
    • , Yu-Ao Chen
    • , Qiang Zhang
    • , Cheng-Zhi Peng
    • , Xiongfeng Ma
    • , Teng-Yun Chen
    •  & Jian-Wei Pan

  • News & Views |

    The combination of high-order harmonic polarimetry and sub-cycle control of electronic trajectories gives insight into the birth of attosecond electronic wave packets in molecules.

    • Giuseppe Sansone

  • Editorial |

    Does the popularity of a recent online photonics conference signify a growing appetite for a change in scientific interaction?

  • Meeting Report |

    Registration fees, travel costs and visas, and time away from home and the lab, are all factors that can make attending scientific meetings in person difficult. Can online conferences provide a solution?

    • David Pile

  • News & Views |

    A new light-field imaging scheme, employing stacks of transparent graphene photodetectors, has been demonstrated, providing a path to greatly simplify the otherwise complex three-dimensional imaging.

    • Khurram Shehzad
    •  & Yang Xu

  • News & Views |

    Carbon-dot-based light-emitting diodes with narrowband efficient emission in the deep blue are an attractive candidate for future high-colour-purity flat-panel display and lighting applications.

    • Biao Zhao
    • , Zhibin Wang
    •  & Zhan’ao Tan

  • Article |

    Vertical integration of a metalens to realize compound nanophotonic systems for optical analog image processing is realized, significantly reducing the size and complexity of conventional optical systems.

    • You Zhou
    • , Hanyu Zheng
    • , Ivan I. Kravchenko
    •  & Jason Valentine

  • Article |

    Strong electrorefractive effects in semiconductor transition metal dichalcogenides (TMDs) at near-infrared wavelengths, where the TMDs are transparent, are observed and used to demonstrate photonic devices based on a composite SiN–TMD platform with large phase modulation, minimal induced loss and low electrical power consumption.

    • Ipshita Datta
    • , Sang Hoon Chae
    • , Gaurang R. Bhatt
    • , Mohammad Amin Tadayon
    • , Baichang Li
    • , Yiling Yu
    • , Chibeom Park
    • , Jiwoong Park
    • , Linyou Cao
    • , D. N. Basov
    • , James Hone
    •  & Michal Lipson

  • Letter |

    A luminescent photonic substrate with a controlled angular emission profile is introduced and its ability to generate high-contrast dark-field images of micrometre-sized living organisms is demonstrated using standard optical microscopy equipment.

    • Cécile A. C. Chazot
    • , Sara Nagelberg
    • , Christopher J. Rowlands
    • , Maik R. J. Scherer
    • , Igor Coropceanu
    • , Kurt Broderick
    • , Yunjo Kim
    • , Moungi G. Bawendi
    • , Peter T. C. So
    •  & Mathias Kolle

  • Letter |

    A heralded squeezing gate with near unit fidelity is demonstrated, even for modest ancillary squeezing. A heralding filter is implemented in the feed-forward operation. With 6 dB of ancillary squeezing, a fidelity of 0.985 is experimentally obtained.

    • Jie Zhao
    • , Kui Liu
    • , Hao Jeng
    • , Mile Gu
    • , Jayne Thompson
    • , Ping Koy Lam
    •  & Syed M. Assad