Photonic Newton’s Cradle for Remote Energy Transport

Abstract

Energy transport is of central importance in understanding a wide variety of transitions of physical states in nature. Recently, the coherence and noise have been identified for their existence and key roles in energy transport processes, for instance, in a photosynthesis complex [1, 2], DNA [3], and odor sensing [4] etc, of which one may have to reveal the inner mechanics in the quantum regime. Here we present an analog of Newton's cradle by manipulating a boundarycontrolled chain on a photonic chip. Long-range interactions can be mediated by a long chain composed of 21 strongly coupled sites, where singlephoton excitations are transferred between two remote sites via simultaneous control of inter-site weak and strong couplings. We observe a high retrieval efficiency in both uniform and defectdoped chain structures. Our results may offer a flexible approach to Hamiltonian engineering beyond geometric limitation, enabling the design and construction of quantum simulators on demand.

Universal bound on sampling bosons in linear optics and its computational implications

“…In particular, a reprogrammable linear optical circuit has been integrated into a photonic chip [ 20 ], which can perform universal operations on six photonic modes with up to six photons. In addition, photonic chips can also be applied for demonstrating different physics [ 21 , 22 ].…”

Experimental Quantum Simulation of Dynamic Localization on Curved Photonic Lattices

“…From this work, we also see that the effective coupling coefficients caused by dynamic localization can be very flexibly manipulated by experimentally tuning different parameters, namely, the curvature amplitude A, longitudinal period L, waveguide spacing d, refractive index n, and wavelength λ. In recent years, there's a growing number of promising studies on quantum information sciences using integrated photonics [40][41][42][43] . We have demonstrated a nearly complete dynamic localization to create a memory function in integrated photonics, and it can be widely used to experimentally manipulate coupling coefficients for more Hamiltonian engineering tasks.…”

Controllable Multiregister Transport on a Photonic Chip

“…40 However, the interaction of the registers is mainly restricted by the spatial arrangement of photonic integrated circuits, 41,42 which essentially limits the ability of free control between remote registers. 43,44 registers that are inaccessible, it is of fundamental interest to develop a way that is capable of directional and highly controllable multiregister transport with low crosstalk.…”

“…Particularly, integrated photonics, − managing the propagation of light, provides a natural and versatile platform to investigate various quantum transport models due to the highly integrated fashion and scalable manner, including both passive and active optical components . However, the interaction of the registers is mainly restricted by the spatial arrangement of photonic integrated circuits, , which essentially limits the ability of free control between remote registers. , Due to such a feasible and scalable transport network with multiregisters that are inaccessible, it is of fundamental interest to develop a way that is capable of directional and highly controllable multiregister transport with low crosstalk.…”