US 11,940,713 B2
Active electro-optic quantum transducers comprising resonators with switchable nonlinearities
Abram L Falk, Port Chester, NY (US); Jason S. Orcutt, Katonah, NY (US); and Chi Xiong, Yorktown Heights, NY (US)
Assigned to INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US)
Filed by International Business Machines Corporation, Armonk, NY (US)
Filed on Nov. 10, 2020, as Appl. No. 17/094,365.
Prior Publication US 2022/0146905 A1, May 12, 2022
Int. Cl. G02F 1/35 (2006.01); G06N 10/00 (2022.01); H04B 10/70 (2013.01)
CPC G02F 1/3501 (2013.01) [G06N 10/00 (2019.01); H04B 10/70 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A quantum transducer device comprising:
a tuning component that comprises nonlinear optical material, wherein the nonlinear optical material comprises a centrosymmetric material having a zero second-order nonlinear susceptibility (χ(2)) and a non-zero third-order nonlinear susceptibility (χ(3));
a microwave resonator; and
an optical resonator,
wherein a first electromagnetic field of the microwave resonator overlaps with a second electromagnetic field of the optical resonator, and the first electromagnetic field and the second electromagnetic field overlap with the centrosymmetric material, and
wherein the optical resonator interacts with the microwave resonator and the centrosymmetric material based on an input that induces a non-zero second-order nonlinear susceptibility (χ(2)) in the centrosymmetric material that causes the interaction to transduce single optical photons to single microwave photons, wherein the input comprises at least one of:
a voltage pulse applied to the microwave resonator, or
a modulated laser pulse applied to the optical resonator.