Distributed optimization for metasurface development
AssigneeQuantinuum LLC
InventorsAdam Jay OLLANIK, David M. GAUDIOSI
Life of this patent
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Abstract
A method for designing a metasurface is provided. The method may include selecting a first metamaterial structure of a plurality of metamaterial structures of the metasurface; generating a forward light propagation model for the first metamaterial structure; generating a reciprocal light propagation model for the first metamaterial structure using a light manipulation function for the metasurface; determining a first electromagnetic response difference between the forward light propagation model and the reciprocal light propagation model; and determining a first property range of the first metamaterial structure such that the first electromagnetic response difference is optimized.
Claims35
A method for designing a metasurface, the method comprising:
- selecting a first metamaterial structure of a plurality of metamaterial structures of the metasurface;
- generating a forward light propagation model for the first metamaterial structure, using a light manipulation function for the metasurface;
- generating a reciprocal light propagation model for the first metamaterial structure using the light manipulation function for the metasurface;
- determining a first electromagnetic response difference between the forward light propagation model and the reciprocal light propagation model;
- and
- determining a first property range of the first metamaterial structure such that the first electromagnetic response difference is optimized.
A method for designing a metasurface, the method comprising:
- selecting a reference metamaterial structure of a plurality of metamaterial structures of the metasurface;
- determine a reference forward phase delay versus a property of the reference metamaterial structure for a forward incident angle;
- determine a reference reciprocal phase delay versus the property of the reference metamaterial structure for a reverse incident angle;
- and
- determine the property of the reference metamaterial structure such that a difference between the forward phase delay and the reciprocal phase delay is optimized,
- wherein the forward phase delay and the reciprocal phase delay are offset with a fixed phase value.
The method of claim 19, comprising iteratively repeating the determining properties of other metamaterial structures until the metasurface is optimized.
A method for designing a metasurface, the method comprising:
- determining an optical response of a metamaterial structure of the metasurface for each value of the values for one or more placement parameters of the metamaterial structure, while keeping one or more global parameters of the metamaterial structure constant;
- determining, for each of the values of the one or more placement parameters, the optical response of the metamaterial structure for each value of the values for one or more shape parameters of the metamaterial structure, while keeping the one or more global parameters of the metamaterial structure constant;
- and
- recording the optical response with respect to each of the values of the one or more placement parameters and each of the one or more shape parameters.
A method for designing a metasurface, the method comprising:
- determining a forward transform function for one or more metamaterial structures of the metasurface;
- determining a reciprocal transform function for the one or more metamaterial structures of the metasurface;
- calculating a forward transformed beam by transforming a field of a forward incident beam according to the forward transform function;
- calculating a reciprocal transformed beam by transforming a field of a reciprocal incident beam according to the reciprocal transform function;
- comparing the forward transformed beam with a forward target beam and determine a forward gradient using the comparison;
- comparing the reciprocal transformed beam with a reciprocal target beam and determine a reciprocal gradient using the comparison;
- and
- modifying one or more shape parameters of metamaterial structures of the metasurface using the forward gradient and the reciprocal gradient.
Dependencies are inferred from the claim text.