Sandia Corporation

Other

National Technology & Engineering Solutions of Sandia, LLC

Sandia National Laboratories

Scott E Bisson

Daniel B S Soh

Rick P Trebino

Daniel Beom Soo Soh

Thomas Jan Kulp

Bruce A Richman

Erkin Sidick

Karla M Armstrong

Alexander Gerson Jacobson

Quantum optical device authentication technologies are described herein. A first device includes an optical transmitter transmits a plurality of pulses to an optical receiver included on a second device. The optical pulses each have one of two non-orthogonal optical states. The optical receiver measures each of the pulses and the second device records a measured value of the optical state of each pulse. Subsequently, the second device transmits the measured values of the optical states of the pulses to the first device. The first device outputs an indication of whether the second device is authenticated based upon the measured values received from the second device and the optical states of the pulses transmitted by the optical transmitter.

Systems and methods for quantum optical device authentication

Various technologies pertaining to an on-chip entangled photon source are described herein. A light source is used to pump two resonator cavities that are resonant at two different respective wavelengths and two different respective polarizations. The resonator cavities are coupled to a four-wave mixing cavity that receives the light at the two wavelengths and outputs polarization-entangled photons.

On-chip entangled photon source

The various technologies presented herein relate to utilizing photons at respective idler and signal frequencies to facilitate generation of photons at a pump frequency. A strong pump field can be applied at the &#x3c9;and the &#x3c9;frequencies, with the generated idler and signal pulses being utilized to generate a photon pair at the &#x3c9;frequency. Further, the idler pump power can be increased relative to the signal pump power such that the pump power P&#x3e;pump power P. Such reversed operation (e.g., &#x3c9;+&#x3c9;&#x2192;&#x3c9;+&#x3c9;) can minimize and/or negate Raman scattering effects. By complying with an energy conservation requirement, the &#x3c9;and &#x3c9;photons interacting with the material through the four-wave mixing process facilitates the entanglement of the &#x3c9;and &#x3c9;photons. The &#x3c9;and &#x3c9;photons can be respectively formed in different length waveguides with a delay utilized to facilitate common timing between the &#x3c9;and &#x3c9;photons.

High-yield entangled single photon source

Embodiments relate to an all fiber passively Q-switched laser. The laser includes a large core doped gain fiber having a first end. The large core doped gain fiber has a first core diameter. The laser includes a doped single mode fiber (saturable absorber) having a second core diameter that is smaller than the first core diameter. The laser includes a mode transformer positioned between a second end of the large core doped gain fiber and a first end of the single mode fiber. The mode transformer has a core diameter that transitions from the first core diameter to the second core diameter and filters out light modes not supported by the doped single mode fiber. The laser includes a laser cavity formed between a first reflector positioned adjacent the large core doped gain fiber and a second reflector positioned adjacent the doped single mode fiber.

All fiber passively Q-switched laser

The present invention provides a photoacoustic spectrometer that is field portable and capable of speciating complex organic molecules in the gas phase. The spectrometer has a tunable light source that has the ability to resolve the fine structure of these molecules over a large wavelength range. The inventive light source includes an optical parametric oscillator (OPO) having combined fine and coarse tuning. By pumping the OPO with the output from a doped-fiber optical amplifier pumped by a diode seed laser, the inventive spectrometer is able to speciate mixtures having parts per billion of organic compounds, with a light source that has a high efficiency and small size, allowing for portability. In an alternative embodiment, the spectrometer is scanned by controlling the laser wavelength, thus resulting in an even more compact and efficient design.

Tunable light source for use in photoacoustic spectrometers

Achromatic phase-matching (APM) is used for efficiently multiplying the frequency of broad bandwidth light by using a nonlinear optical medium comprising a second-harmonic generation (SHG) crystal. Stationary optical elements whose configuration, properties, and arrangement have been optimized to match the dispersion characteristics of the SHG crystal to at least the second order. These elements include a plurality of prismatic elements for directing an input light beam onto the SHG crystal such that each ray wavelength is aligned to match the phase-matching angle for the crystal at each wavelength of light to at least the second order and such that every ray wavelength overlap within the crystal.

Apparatus and methods for using achromatic phase matching at high orders of dispersion

An optical system uses a nonlinear optical medium to alter the frequency of a relatively narrow band light source tunable over a plurality of different frequencies using an optical system for passively directing light to the nonlinear medium at a correct phase matching angle. In this manner, the light from the tunable light source can be efficiently frequency-doubled or frequency-tripled without the need of moving parts. An all prism design provides a system of optimal efficiency.

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Livermore, CA, United States of America

Scott E Bisson