Institute of Photonic Sciences

Plasmon‐Enhanced Second‐Harmonic Generation in Atomically Thin Crystalline Silver Nanostructures

ABSTRACT The intrinsically weak nonlinear optical response of existing materials, further constrained by symmetry‐forbidden second‐order processes in centrosymmetric media, severely limits efficient frequency conversion in deeply subwavelength, ultrathin volumes. Addressing this...

Spinor Bose-Einstein condensate as an analog simulator of molecular bending vibrations

We demonstrate that spinor Bose-Einstein condensates (BECs) can be operated as an analog simulator of the two-dimensional vibron model. This algebraic model describes bending vibrations of molecules and, in the case of triatomic molecules, exhibits two phases where linear and ben...

Scalable ground-state certification of quantum spin systems via structured noncommutative polynomial optimization

A fundamental challenge in quantum physics is determining the ground-state properties of many-body systems. Whereas standard variational approaches posit a wave-function ansatz and minimize over the possible states expressible by that ansatz, the problem can alternatively be form...

Concurrent Third-Order Replicas in an Electro-Optical SOA1_SOA-MZI_SOA4 Cascade via Four-Wave Mixing and Cross-Phase and Cross-Gain Modulation

Concurrent up- and down-frequency conversion is central to radio-over-fiber (RoF) and millimeter-wave (MMW) system design. However, existing all-optical mixers based on semiconductor optical amplifiers (SOAs) typically exploit a single nonlinear mechanism, such as four-wave mixin...

Sonification of entanglement dynamics in many-qubit systems

Abstract Quantum mechanics poses significant challenges for audio-visual representation, particularly in the context of quantum entanglement. Sonification—the auditory representation of data—offers a promising complementary approach to conventional visualization techniques. This...

Emergent Bell phase in an electro-nanomechanical quantum simulator

Suspended carbon nanotubes hosting electrostatically defined quantum dots allow for exceptionally strong and tunable electromechanical coupling as well as mechanical modes that can reach the quantum ground state of motion simply by cryogenic cooling. This makes them a unique plat...