Volume 12 Issue 9, September 2018

Volume 12 Issue 9

Time-folded imaging

Harnessing multiple round-trips through an optical cavity enables radical possibilities for time-of-flight cameras. This concept of time-folding an optical path yields new camera designs capable of functions such as ultrafast multispectral imaging.

See Heshmat et al.

Image: Imaginarium of Technology. Cover Design: Bethany Vukomanovic.

Books & Arts

Research Highlights

News & Views

  • News & Views |

    Individual, light-emitting nanoparticles offer many opportunities for early disease detection. Now, advances towards greatly enhanced brightness are being made using core–multi-shell architectures.

    • John Ballato
  • News & Views |

    Exploiting an optical cavity that folds space in time in a conventional lens design provides a novel route for time-resolved imaging and depth sensing.

    • Sylvain Gigan

Perspectives

  • Perspective |

    The parameters and issues that affect the accuracy of fluorescence molecular imaging are discussed and a means for ensuring reliable reproduction of the fluorescence signals in biological tissue is proposed.

    • Maximillian Koch
    • , Panagiotis Symvoulidis
    •  & Vasilis Ntziachristos

Review Articles

  • Review Article |

    This Review covers recent progress in quantum technologies with optically addressable solid-state spins. A possible path to chip-scale quantum technologies through advances in nanofabrication, quantum control and materials engineering is described.

    • David D. Awschalom
    • , Ronald Hanson
    • , Jörg Wrachtrup
    •  & Brian B. Zhou

Letters

  • Letter |

    Spin-polarized photon absorption and photoluminescence are reported in reduced-dimensional chiral perovskite materials. The finding indicates that such materials may in the future be useful as a photonic interface for spintronics.

    • Guankui Long
    • , Chongyun Jiang
    • , Randy Sabatini
    • , Zhenyu Yang
    • , Mingyang Wei
    • , Li Na Quan
    • , Qiuming Liang
    • , Abdullah Rasmita
    • , Mikhail Askerka
    • , Grant Walters
    • , Xiwen Gong
    • , Jun Xing
    • , Xinglin Wen
    • , Rafael Quintero-Bermudez
    • , Haifeng Yuan
    • , Guichuan Xing
    • , X. Renshaw Wang
    • , Datong Song
    • , Oleksandr Voznyy
    • , Mingtao Zhang
    • , Sjoerd Hoogland
    • , Weibo Gao
    • , Qihua Xiong
    •  & Edward H. Sargent

Articles

  • Article |

    A fully programmable two-qubit quantum processor with more than 200 components is demonstrated by using silicon photonic circuits. A two-qubit quantum approximate optimization algorithm and simulation of Szegedy quantum walks are implemented.

    • Xiaogang Qiang
    • , Xiaoqi Zhou
    • , Jianwei Wang
    • , Callum M. Wilkes
    • , Thomas Loke
    • , Sean O’Gara
    • , Laurent Kling
    • , Graham D. Marshall
    • , Raffaele Santagati
    • , Timothy C. Ralph
    • , Jingbo B. Wang
    • , Jeremy L. O’Brien
    • , Mark G. Thompson
    •  & Jonathan C. F. Matthews
  • Article |

    A metalens is integrated into the design of an endoscopic optical coherence tomography catheter to achieve near-diffraction-limited imaging free of non-chromatic aberrations, offering high-resolution imaging well beyond the Rayleigh range of the input field.

    • Hamid Pahlevaninezhad
    • , Mohammadreza Khorasaninejad
    • , Yao-Wei Huang
    • , Zhujun Shi
    • , Lida P. Hariri
    • , David C. Adams
    • , Vivien Ding
    • , Alexander Zhu
    • , Cheng-Wei Qiu
    • , Federico Capasso
    •  & Melissa J. Suter
  • Article |

    Broadband terahertz (THz) pulses are generated from a laser filament with a near-infrared laser at the fundamental frequency and its second harmonic. The azimuthal angle and ellipticity of the THz pulses are arbitrarily controlled by the two lasers.

    • Zhelin Zhang
    • , Yanping Chen
    • , Sen Cui
    • , Feng He
    • , Min Chen
    • , Zhen Zhang
    • , Jin Yu
    • , Liming Chen
    • , Zhengming Sheng
    •  & Jie Zhang
  • Article |

    By folding large spaces in time using an off-resonant Fabry–Pérot cavity in camera sensors, new capabilities such as ultrafast multi-zoom imaging and ultrafast multispectral imaging, of use for time-resolved imaging and depth-sensing optics, are found.

    • Barmak Heshmat
    • , Matthew Tancik
    • , Guy Satat
    •  & Ramesh Raskar

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