Non-reciprocal energy transport in linear and ring dynamic quantum networks and width-patterned optical waveguide...

Area of Science:

• Quantum optics
• Integrated photonics
• Waveguide theory

Background:

• Non-reciprocal and unidirectional transport are crucial for signal transmission in quantum and optical networks.
• Controlling quantum energy flow and light propagation direction is a key challenge in integrated systems.

Purpose of the Study:

• To investigate methods for achieving efficient and non-reciprocal quantum energy transport using dynamic quantum nodes.
• To explore the possibility of trapping quantum energy within a ring configuration of modulated nodes.
• To demonstrate unidirectional and chiral light transport in engineered waveguide arrays.

Main Methods:

• Time-dependent modulation of quantum node positions to guide quantum energy.
• Utilizing a ring configuration of dynamically controlled quantum nodes for energy trapping.
• Designing parallel waveguide arrays with specific width patterns for unidirectional Gaussian beam transfer.
• Arranging waveguides on a cylindrical shell with a novel width pattern to achieve chiral transport.

Main Results:

• Demonstrated efficient and non-reciprocal guidance of quantum energy via time-dependent node modulation.
• Successfully trapped quantum energy within a ring of dynamically controlled quantum nodes.
• Achieved unidirectional transfer of a Gaussian beam across specifically patterned parallel waveguide arrays.
• Realized chiral transport of an incident Gaussian beam using waveguides on a cylindrical shell.

Conclusions:

• Dynamic control of quantum nodes offers a viable strategy for non-reciprocal quantum energy transport and confinement.
• Engineered waveguide structures provide effective means for achieving unidirectional and chiral light propagation in integrated optical systems.