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Physics

Optical physics and communications

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Displaying 251 - 275 of 1595

Characterization of waveguide-integrated single-photon detectors using integratedphotonic structures

February 18, 2021
Author(s)
Sonia M. Buckley, Alexander N. Tait, Jeffrey T. Chiles, Adam N. McCaughan, Saeed Khan, Richard Mirin, Sae Woo Nam, Jeffrey M. Shainline
We show several techniques for using integrated-photonic waveguide structures to simultaneously characterize multiple waveguide-integrated superconducting-nanowire detectors with a single fiber input. We demonstrate structures for direct comparison of

Spectropolarimetry of primitive phototrophs as global surface biosignatures

February 4, 2021
Author(s)
William Sparks, M. N. Parenteau, Robert E. Blankenship, Thomas Germer, C.H. L. Patty, Kimberly M. Bott, Charles M. Telesco, Victoria S. Meadows
Photosynthesis is an ancient metabolic process that began on the early Earth, offering plentiful energy to organisms that utilize it, to the extent that they can achieve global significance. The potential exists for similar processes to operate on

Electro-optic frequency combs for rapid interrogation in cavity optomechanics

January 29, 2021
Author(s)
David Long, Benjamin J. Reschovsky, Feng Zhou, Yiliang Bao, Thomas W. LeBrun, Jason Gorman
Electro-optic frequency combs were employed to rapidly interrogate an optomechanical sensor, demonstrating spectral resolution substantially exceeding that possible with a mode-locked frequency comb. Frequency combs were generated using an integrated

Quantum dot lasers - history and future prospects

January 29, 2021
Author(s)
Richard Mirin, John E. Bowers, Justin Norman
We describe the initial efforts to use molecular beam epitaxy to grow InAs quantum dots on GaAs via the Stranski-Krastanow transition. We then discuss the initial efforts to use these quantum dots to demonstrate quantum dot lasers. We discuss the

Two-beam coupling by a hot electron nonlinearity

January 15, 2021
Author(s)
Jagannath Paul, Mario Miscuglio, Yaliang Gui, Volker Sorger, Jared Wahlstrand
Transparent conductive oxides such as indium tin oxide (ITO) have attracted much recent interest for their enhanced optical nonlinearity near the epsilon near zero wavelength. The nonlinearity of these materials is caused by laser heating of electrons

Coherent optical processes with an all-optical atomic simulator

January 4, 2021
Author(s)
Ivan Burenkov, Sergey Polyakov, Olga Tikhonova, Irina Novikova
We show how novel photonic devices such as broadband quantum memory and efficient quantum frequency transduction can be implemented using three-wave mixing processes in a 1D array of nonlinear waveguides evanescently coupled to nearest neighbors. We do

Independent Amplitude Control of Arbitrary Orthogonal States of Polarization via Dielectric Metasurfaces

December 23, 2020
Author(s)
Qingbin Fan, Mingze Liu, Cheng Zhang, Wenqi Zhu, Yilin Wang, Peicheng Lin, Feng Yan, Lu Chen, Henri Lezec, Yanqing Lu, Amit Agrawal, Ting Xu
Exquisite polarization control using optical metasurfaces has attracted considerable attention thanks to their ability to manipulate multichannel independent wavefronts with subwavelength resolution. Here we present a new class of metasurface polarization

Feedback Induced Magnetic Phases in Binary Bose-Einstein Condensates

December 7, 2020
Author(s)
Ian B. Spielman, Shangjie Guo, Hilary M. Hurst
Weak measurement in tandem with real-time feedback control is a new route toward engineering novel non-equilibrium quantum matter. Here we develop a theoretical toolbox for quantum feedback control of multicomponent Bose-Einstein condensates (BECs) using