Detuning modulated composite pulses for high-fidelity robust quantum control
AssigneeRamot at Tel-Aviv University Ltd.
InventorsElica Kyoseva, Hadar Greener, Haim Suchowski
Life of this patent
Estimating the term…
Abstract
A method for robust state manipulation in quantum information processing comprises evanescently coupling a first waveguide to a second waveguide, the first and second waveguide having different geometries respectively; and providing waveguide geometries such that their coupling is detuned, the detuning being a function of the geometries, the detuned coupling thereby providing reliable population transfer between the first and second waveguides that is robust to fabrication and other errors. The method may be used to provide a quantum optical coupler.
Claims5
A coupler for quantum information processing, the coupler comprising:
- a laser input;
- a first waveguide having a lengthwise direction and a cross-section along said lengthwise direction;
- a second waveguide having a lengthwise direction and a cross-section along said lengthwise direction having at least one step change, wherein said first and second waveguides are optically coupled with a predetermined coupling constant;
- a detector for detecting output;
- and
- at least one member of the group consisiting of:
- a first grating between said input and said first and second waveguides;
- and
- a second grating between said first and second waveguides and said detector.
Dependencies are inferred from the claim text.