A5044853147- Photonic and Optical Devices
- Neural Networks and Reservoir Computing
- Advanced Fiber Laser Technologies
- Quantum Information and Cryptography
- Optical Network Technologies
- Mechanical and Optical Resonators
- Semiconductor Lasers and Optical Devices
- Quantum Mechanics and Applications
- Quantum Computing Algorithms and Architecture
- Photonic Crystals and Applications
- Semiconductor Quantum Structures and Devices
- Advanced Photonic Communication Systems
- Advanced Fiber Optic Sensors
- Advanced Optical Sensing Technologies
- Optical Coatings and Gratings
- Photorefractive and Nonlinear Optics
- Quantum optics and atomic interactions
- Solid State Laser Technologies
- Laser Design and Applications
- Advanced MEMS and NEMS Technologies
- Photonic Crystal and Fiber Optics
- Advanced Thermodynamics and Statistical Mechanics
- Orbital Angular Momentum in Optics
- Advanced Optical Imaging Technologies
- Advanced Optical Network Technologies
United States Air Force Research Laboratory
2015-2024
U.S. Air Force Research Laboratory Information Directorate
2015-2024
Massachusetts Institute of Technology
2024
Rochester Institute of Technology
2016-2021
Wright-Patterson Air Force Base
2014
Sensors (United States)
2003
Advances in photonic integrated circuits have recently enabled electrically reconfigurable optical systems that can implement universal linear optics transformations on spatial mode sets.This review paper covers progress such "programmable nanophotonic processors" as well emerging applications of the technology to problems including classical and quantum information processing machine learning.
We demonstrate a wide-bandgap semiconductor photonics platform based on nanocrystalline aluminum nitride (AlN) sapphire. This guides light at low loss from the ultraviolet (UV) to visible spectrum. measure ring resonators with intrinsic quality factor (Q) exceeding 170,000 638 nm and Q >20,000 down 369.5 nm, which shows promising path for low-loss integrated in UV opens up new possibilities quantum optics trapped ions or atom-like color centers solids, as well classical applications...
We demonstrate that an integrated silicon microring resonator is capable of efficiently producing photon pairs are completely unentangled; such a key component heralded single-photon sources. A dual-channel interferometric coupling scheme can be used to independently tune the quality factors associated with pump and signal idler modes, yielding biphoton wavefunction Schmidt number arbitrarily close unity. This will permit generation states unit purity.
Silicon photonics holds significant promise in revolutionizing optical interconnects data centers and high performance computers to enable scaling into the Pb/s package escape bandwidth regime while consuming orders of magnitude less energy per bit than current solutions. In this work, we review recent progress silicon photonic leveraging chip-scale Kerr frequency comb sources provide a comprehensive overview massively scalable systems capable capitalizing on large number wavelengths...
Abstract Controlling large-scale many-body quantum systems at the level of single photons and atomic is a central goal in information science technology. Intensive research development has propelled foundry-based silicon-on-insulator photonic integrated circuits to leading platform for optical control with individual mode programmability. However, integrating single-emitter tunability remains an open challenge. Here, we overcome this barrier through hybrid integration multiple InAs/InP...
Abstract Entanglement is the powerful and enigmatic resource central to quantum information processing, which promises capabilities in computing, simulation, secure communication, metrology beyond what possible for classical devices. Exactly quantifying entanglement of an unknown system requires completely determining its state, a task demands intractable number measurements even modestly-sized systems. Here we demonstrate method rigorously high-dimensional from extremely limited data. We...
With the stability of integrated photonics at network nodes and advantages photons as flying qubits, photonic quantum information processing (PQIP) makes networks increasingly scalable. However, scaling up PQIP requires preparation many identical single which is limited by spectral distinguishability single-photon sources due to variations in fabrication or local environment. To address this, we introduce frequency auto-homogenization via group-velocity-matched downconversion remove varying...
Silicon photonics is a promising platform to realize the dense and scalable integration required for quantum computing, communication, sensing. The authors demonstrate key building block this platform, simple, single source of entangled photons, use it observe interference on same chip. This removes need clumsy interfacing multiple photon sources, as in previous studies, provides basis highly photonic circuits that achieve multi-qubit entanglement.
Here we present extremely low connector-to-connector loss (≤3 dB) through silicon photonic chips using ultra-low (≤0.15 splicing between SMF-28 and ultra-high numerical aperture (UHNA) fibers. The small MFD from the UHNA fibers enables strong coupling to hybrid TE/TM edge couplers achieving TM (TE) losses of 1.25 (2.35) dB per coupler polarization-dependent loss. Mode simulations tolerance are investigated understand performance.
Silicon ring resonators are used as photon pair sources by taking advantage of silicon's large third order nonlinearity with a process known spontaneous four wave mixing. These capable producing pairs indistinguishable photons but typically suffer from an effective $50\%$ loss. By slightly decoupling the input waveguide ring, drop port coincidence ratio can be significantly increased trade-off being that pump is less efficiently coupled into ring. Ring this design have been demonstrated...
Quantum information processing, from cryptography to computation, based upon linear quantum-optical circuit elements relies heavily on the ability offered by Hong-Ou-Mandel (HOM) effect ``route'' photons separate input modes into one of two common output modes. Specifically, HOM accomplishes path entanglement at a time such that no coincidences are observed in system exhibiting effect. In this paper, we prove, principle, operating specific nanophotonic device properly, can conditionally...
As a tutorial, we examine the absolute brightness and number statistics of photon pairs generated in Spontaneous Parametric Down-Conversion (SPDC) from first principles. In doing so, demonstrate how diverse implementations SPDC can be understood through single common framework, use this to derive straightforward formulas for biphoton generation rate (pairs per second) variety different circumstances. particular, consider cases both collimated focused gaussian pump beams bulk nonlinear...
We show how to quantify tri-partite entanglement using entropies derived from experimental correlations. use a multi-partite generalization of the formation that is greater than zero if and only state genuinely entangled. develop an entropic witness for tripartite entanglement, degree violation this places lower limit on formation. test our results in three-qubit regime GHZ-Werner W-Werner state, high-dimensional pure-state triple-Gaussian wavefunction describing spatial energy-time photon...
We propose a scalable version of Knill-Laflamme-Milburn (KLM) controlled-not (cnot) gate based upon integrated waveguide microring resonators (MRR), vs the original KLM approach using beam splitters. The core element our cnot is nonlinear phase-shift (NLPSG) three MRRs, which we examine in detail. find an expanded parameter space for NLPSG over that conventional version. Whereas all prior proposals bulk optical realizations optimal operating point precisely single zero-dimensional manifold...
Here we present the experimental demonstration of a Silicon ring resonator photon-pair source. The crystalline (radius 18.5μm) was designed to realize low dispersion across multiple resonances, which allows for operation with high quality factor Q~50k. In turn, source exhibits very brightness >3x10<sup>5</sup> photons/s/mW<sup>2</sup>/GHz since produced photon pairs have narrow bandwidth. Furthermore, waveguidefiber coupling loss minimized <1.5dB using an inverse tapered waveguide...
Photonic integrated circuits (PICs) are a maturing technology with foundries enabling wafer-scale PIC fabrication. At the same time, optomechanics, in which micro-/nano-optical and -mechanical structures coupled, is well-established many basic research practical applications. However, optomechanical devices have so far required highly-customized fabrication that limits their inclusion foundry-processed PICs. To address this need, we design PICs using standard low-loss process kit (PDK)...
We demonstrate an electrically pumped InAs quantum dot (QD) two-section passively mode-locked laser (MLL) on a silicon substrate by low temperature (250 °C) Pd-GaAs wafer bonding technology. The saturable absorber of the QD-MLL is isolated 15-μm wide dry-etching gap which resulted in ∼30 kΩ resistance from gain regions MLL. At room temperature, operates O-band (1.3 μm) telecommunication wavelength regime with threshold current 94 mA and bar cavity lengths 6 mm 300 μm, respectively. optimum...
We present a thermally isolated phase shifter through undercutting the silicon waveguide and resistive heaters, yielding low-power ( P π = 1.2 mW) low-crosstalk tunable Mach-Zehnder interferometer.
We demonstrate a wide-bandgap semiconductor photonics platform based on aluminum nitride sapphire. measure ring resonators with quality factor >140,000 at 638 nm and >20,000 down to 369 nm, which shows promising path for low-loss integrated in the ultraviolet visible spectrum.
Quantum mechanics can produce correlations that are stronger than classically allowed. This stronger-than-classical correlation is the "fuel" for quantum computing. In 1991 Schumacher forwarded a beautiful geometric approach, analogous to well-known result of Bell, capture non-classicality this singlet state. He used well-established information distance defined on an ensemble identically-prepared states. calculated certain detector settings measure entangled state, resulting geometry...
Controlling large-scale many-body quantum systems at the level of single photons and atomic is a central goal in information science technology. Intensive research development has propelled foundry-based silicon-on-insulator photonic integrated circuits to leading platform for optical control with individual mode programmability. However, integrating single-emitter tunability remains an open challenge. Here, we overcome this barrier through hybrid integration multiple InAs/InP microchiplets...