Robust, efficient, micrometre-scale phase modulators at visible wavelengths

Liang, Guozhen; Huang, Heqing; Mohanty, Aseema; Shin, Min Chul; Ji, Xingchen; Carter, Michael Joseph; Shrestha, Sajan; Lipson, Michal; Yu, Nanfang

doi:10.1038/s41566-021-00891-y

Cited by 79 publications

(45 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since the integrated photonic chip promises the high performances thermal-optics [47] or electro-optics modulators [24], thus it is possible to take the advantage to transport the atoms in the dipole traps. As the interference of two diffraction beams is related to the incident phase, the intensity distribution of the optical field can be manipulated by precisely controlling the laser phases.…”

Section: B Single-atom Transportingmentioning

confidence: 99%

“…However, it is still challenging to integrate cold atom devices and photonic devices on a single chip. For trapping an ensemble of atoms, various methods that are compatible with the photonic chip have been proposed, such as microwire atomic potential trap [23], grating magneto-optical trap [24] and static-magnetic trap [25]. In these platforms, the state manipulation and readout of the cold atom ensemble are still resorted to the free-space laser beam excitation and fluorescence collection.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Multi-grating design for integrated single-atom trapping, manipulation, and readout

Liu,

Peng

et al. 2022

Preprint

View full text Add to dashboard Cite

An on-chip multi-grating device is proposed to interface single-atoms and integrated photonic circuits, by guiding and focusing lasers to the area with ∼10 µm above the chip for trapping, state manipulation and readout of single Rubidium atoms. For the optical dipole trap, two 850 nm laser beams are diffracted and overlapped to form a lattice of single-atom dipole trap, with the diameter of optical dipole trap around 2.7 µm. Similar gratings are designed for guiding 780 nm probe laser to excite and also collect the fluorescence of 87 Rb atoms. Such a device provides a compact solution for future applications of single atoms, including the single photon source, single-atom quantum register, and sensor. FIG. 1. (a) Schematic diagram of the multi-focusing-grating structure for hybrid photonic-atom chip. (b) Detailed illustration of the grating from the side view (upper panel) and the top view (bottom pannel).

show abstract

Section: B Single-atom Transportingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multi-grating design for integrated single-atom trapping, manipulation, and readout

Liu,

Peng

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Studies have shown that at the microscopic level, the angular momentum of electromagnetic waves also has a certain mechanical effect, which will cause the particles on the propagation path to rotate. In addition, the angular momentum of electromagnetic waves can be divided into two parts, one part is called SAM and the other part is called OAM, and in order to facilitate the derivation and analysis, they are represented by S and L , respectively [ 26 , 27 ]. For a complete torus, the isophase surfaces are two helical surfaces with an angle of 180 between them, the interferogram of plane wave and spherical wave varies greatly, but the mode orbital angular momentum can still be judged from the spherical wave interferogram.…”

Section: Mechanically Reconfigurable Arrays and Neural Network Data Setsmentioning

confidence: 99%

“…Static int interspacef � brick_width; For the robot designer a 2 + b 2 Node_pos � [(1, 0), (0, 1), (…”

Section: Algorithm Step Number Multimodal Orbital Angular Content In ...mentioning

confidence: 99%

“…With the continuous development of industrial productivity, people's lives have begun to become intelligent, robots have entered the social industry and people's lives, and recongurable robots have also attracted people's attention. e recon gurable robot has the double repeatability of the mechanical system and the control system, and the completed tasks are no longer single and unchanged, which reduces the use cost of the robot and greatly improves the e ciency [1][2][3]. e research content of this paper mainly includes kinematics analysis and dynamics research of recon gurable robots, as well as neural network PID motion control and simulation research of recon gurable robots.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Multimodal Orbital Angular Momentum Data Model Based on Mechanically Reconfigurable Arrays and Neural Networks

Zhang

Wang

Zhu

et al. 2022

Computational Intelligence and Neuroscience

View full text Add to dashboard Cite

Multimodal orbital angular momentum is a research hotspot in the field of electromagnetic wave communication. How to accurately detect and identify multimodal orbital angular momentum data is a current academic problem. Based on the theory of mechanically reconfigurable arrays and neural networks, the purity, detection method, and transmission and reception of orbital angular momentum vortex waves are modeled in this paper. Through the network identification of the dynamic model of the three-degree-of-freedom reconfigurable manipulator, the paper takes the identification result and the control input of the single neuron PID as the input of the system control torque of the manipulator and realizes the reconfigurable manipulator. In the simulation process, the local approximation effect of the nonlinear control system used is very ideal. The single neuron PID controller overcomes the shortcomings of time-consuming and unsatisfactory control accuracy caused by the constant parameter of the traditional PID controller and realizes the circular loop. On the other hand, at the point of interest of the human eye, its resolution value is the largest, and its value gradually decreases as the distance from the pit increases. The experimental results show that the three-transmitting and three-receiving orbital angular momentum vortex wave transceiver system based on the mechanically reconfigurable array and neural network theory is relatively complete, and the transmission coefficient between the same modes reaches 0.827, which is much higher than that between different modes. On this basis, the modal purity, detection method, and reception of orbital angular momentum are studied accordingly. At the same time, the damage to the microscopic particles can be greatly reduced. At the same time, the information delay is reduced to 8.25%, which effectively improves the isolation characteristics of different modal orbital angular momentum channels and promotes the communication transmission of multimodal signals.

show abstract

On‐Chip Direction‐Multiplexed Meta‐Optics for High‐Capacity 3D Holography

Li,

Liu,

Zhang

et al. 2023

Adv Funct Materials

View full text Add to dashboard Cite

Metasurfaces are recently incorporated with waveguides for in‐plane wave manipulation and extraction, enhancing the capability and design flexibility of integrated photonic devices. However, the unique guided‐wave‐driven scheme poses challenges in achieving multiplexed functionality for on‐chip integrated metasurfaces. Here, an on‐chip direction‐multiplexing strategy is proposed and demonstrated for high‐capacity 3D multiplane projection in free space. By exploring and utilizing the direction‐dependence of the guided‐wave‐driven detour phase manipulation, a 16‐channel on‐chip holography is realized with different images independently encoded at distinct z planes for all four illumination directions. Moreover, the on‐chip full‐space 3D holography is demonstrated by exploiting the conjugated relation of the optical responses driven by the opposite on‐chip illuminations, enabling observation of a total of 16 holographic images in full‐space. The demonstrated on‐chip direction‐multiplexed holography exhibits low background noise or crosstalk and offers high information density and quality, which shows promise for practical applications in data storage, 3D display, and virtual/augmented reality.

show abstract

Robust, efficient, micrometre-scale phase modulators at visible wavelengths

Cited by 79 publications

References 50 publications

Multi-grating design for integrated single-atom trapping, manipulation, and readout

Multi-grating design for integrated single-atom trapping, manipulation, and readout

Multimodal Orbital Angular Momentum Data Model Based on Mechanically Reconfigurable Arrays and Neural Networks

On‐Chip Direction‐Multiplexed Meta‐Optics for High‐Capacity 3D Holography

Contact Info

Product

Resources

About