Ryan O Behunin

US Patent:

20210152347, May 20, 2021

Filed:

Nov 18, 2020

Appl. No.:

16/951760

Inventors:

- Flagstaff AZ, US
Ines MONTANO - Flagstaf AZ, US
Ryan BEHUNIN - Flagstaff AZ, US
Vince RODRIGUEZ - Flagstaff AZ, US

International Classification:

H04L 9/08
H04B 10/079
H04B 10/70

Abstract:

The performance of quantum key distribution by systems and methods that use wavelength division multiplexing and encode information using both wavelength and polarization of photons of two or more wavelengths. Multi-wavelength polarization state encoding schemes allow ternary-coded digits, quaternary-coded digits and higher-radix digits to be represented by single photons. Information expressed in a first radix can be encoded in a higher radix and combined with a string of key values to produce a datastream having all allowed digit values of that radix in a manner that allows eavesdropping to be detected without requiring the sender and receiver to exchange additional information after transmission of the information.

US Patent:

20200030849, Jan 30, 2020

Filed:

Feb 28, 2018

Appl. No.:

16/488223

Inventors:

- New Haven CT, US
Prashanta Kharel - New Haven CT, US
William Renninger - New Haven CT, US
Ryan Orson Behunin - Flagstaff AZ, US

Assignee:

Yale University - New Haven CT

International Classification:

B06B 1/04
H01S 3/08

Abstract:

Techniques are provided to optomechanically couple light to a crystal structure, thereby producing stable, coherent bulk acoustic modes within the structure. In some embodiments, a resonator may comprise a plano-convex crystal structure to which pump light may be applied. The pump light may transfer energy to acoustic phonon modes of the crystal structure so as to create acoustic phonon modes with a coherence length greater than a length of the crystal structure. High frequency and high quality factor resonators may thereby be produced and operated.

US Patent:

20180331490, Nov 15, 2018

Filed:

May 11, 2018

Appl. No.:

15/977500

Inventors:

- New Haven CT, US
Nils Thomas Otterstrom - New Haven CT, US
Eric Andrew Kittlaus - New Haven CT, US
Ryan Orson Behunin - Flagstaff AZ, US
Zheng Barton Wang - Austin TX, US

Assignee:

Yale University - New Haven CT

International Classification:

H01S 3/30
H01S 3/063
H01S 3/094
H01S 3/106

Abstract:

Techniques for producing a Brillouin laser are provided. According to some aspects, techniques are based on forward Brillouin scattering and a multimode acousto-optic waveguide in which light is scattered between optical modes of the waveguide via the Brillouin scattering. This process may transfer energy from a waveguide mode of pump light to a waveguide mode of Stokes light. This process may be referred to herein as Stimulated Inter-Modal Brillouin Scattering (SIMS). Since SIMS is based on forward Brillouin scattering, laser (Stokes) light may be output in a different direction than back toward the input pump light, and as such there is no need for a circulator or other non-reciprocal device to protect the pump light as in conventional devices.