Towards higher-dimensional structured light

He, Chao; Shen, Yijie; Forbes, Andrew

doi:10.1038/s41377-022-00897-3

Cited by 291 publications

(128 citation statements)

References 233 publications

Supporting

Mentioning

128

Contrasting

Order By: Relevance

“…The key motivation is that the OAM has potentially an unlimited number of states [17,18]. In the classical domain, the OAM can increase the capacity of optical communication links ranging from implementation in fibre [19,20], over-city links [21] and free-space [22], and can also operate in mm-wave [23]. Actually, each OAM mode can be considered as an individual quantum degree of freedom [24,25].…”

Section: Introductionmentioning

confidence: 99%

High-dimensional orbital angular momentum entanglement from an ultrathin nonlinear film

et al. 2022

View full text Add to dashboard Cite

Entanglement, as a crucial feature of quantum systems, is essential for various applications of quantum technologies. High-dimensional entanglement has the potential to encode arbitrary large amount of information and enhance robustness against eavesdropping and quantum cloning. The orbital angular momentum (OAM) entanglement can achieve the high-dimensional entanglement nearly for free stems due to its discrete and theoretically infinite-dimensional Hilbert space. A stringent limitation, however, is that the phase-matching condition limits the entanglement dimension because the coincidence rate decreases significantly for high-order modes. Here we demonstrate relatively flat high-dimensional OAM entanglement based on a spontaneous parametric down conversion (SPDC) from an ultrathin nonlinear lithium niobite crystal. The difference of coincidences between the different-order OAM modes significantly decreases. To further enhance the nonlinear process, this microscale SPDC source will provide a promising and integrated method to generate optimal high-dimensional OAM entanglement.

show abstract

Section: Introductionmentioning

confidence: 99%

High-dimensional orbital angular momentum entanglement from an ultrathin nonlinear film

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The manipulation of structured light with more extended degrees of freedom (DoFs) and in higher dimensions has recently attracted increasing attention owing to its advanced applications [1,2], which are significant among optical trapping or tweezer technologies with functional structures and increased precision [3,4]. The original optical tweezers can only trap particles at the intersection of six laser beams; the particles are held in a magnetic field by extrusion produced by the opposite beams [5].…”

Section: Introductionmentioning

confidence: 99%

“…Owing to the recent emergence of digitally controlled structured light, especially vortex beams carrying orbital angular momentum (OAM) [1][2][3][4], optical tweezers based on structured light have been endowed with novel capabilities of an optical wrench involving a gradient force, which facilitates novel manipulation modes [21]. Hence, advanced structured optical tweezers have become a hot topic in optics and photonics [3,4,22].…”

Section: Introductionmentioning

confidence: 99%

Six-dimensional structured optical tweezers synthetized by rigid-body emulation

Shen

Zhu

Tai

et al. 2022

Preprint

Self Cite

View full text Add to dashboard Cite

Structuring light with more extended degrees of freedom (DoFs) and in higher dimensions is increasingly gaining traction and leading to breakthroughs such as super-resolution imaging, larger-capacity communication, especially ultraprecise optical trapping or tweezers. More DoFs when manipulating an object can access more maneuvers and radically increase maneuvering precision, which is of significance in biology and related microscopic detection. However, manipulating particles beyond the three-dimensional (3D) spatial manipulation by using current all-optical tweezers technology remains difficult. To overcome this limitation, we theoretically and experimentally present six-dimensional (6D) structured optical tweezers based on tailoring structured light emulating rigid-body mechanics. Our method facilitates the evaluation of the methodology of rigid-body mechanics to synthesize six independent DoFs in a structured optical trapping system, akin to six-axis rigid-body manipulation, including surge, sway, heave, roll, pitch, and yaw. In contrast to previous 3D optical tweezers, our 6D structured optical tweezers significantly improved the flexibility of the path design of complex trajectories, thereby laying the foundation for next-generation functional optical manipulation, assembly, and micromechanics.

show abstract

“…Although it seems counterintuitive, such an effect has been experimentally verified close to 30 years ago [1,2]. With the recent development of structured light [9,10], more and more complex forms of optical self-healing effects have emerged. Whereas, the theoretical explanations to the self-healing effect airs diverse views and to date, is still in heavy debate, without a systematic summary yet.…”

mentioning

confidence: 99%

Self-healing of structured light: a review

Shen

Pidishety

Nape

et al. 2022

J. Opt.

Self Cite

View full text Add to dashboard Cite

Self-healing, a counterintuitive but significant effect in structured light, that granting a light field the ability to reconstruct itself after a partial obstruction placed in its propagation path. Here, we will give a comprehensive review of the history and development of self-healing effects, especially highlighting its importance in vector vortex beams carrying spin and orbital angular momenta. Moreover, an unified zoology of self-healing, structured light is proposed to unveil a deeper understanding of its physical mechanism and provide a bird's eye view on diverse forms of self-healing effects of different kinds of complex structured light. Finally, we outline the open challenges we are facing, potential opportunities and future trends for both fundamental physics and applications.

show abstract

Towards higher-dimensional structured light

Cited by 291 publications

References 233 publications

High-dimensional orbital angular momentum entanglement from an ultrathin nonlinear film

High-dimensional orbital angular momentum entanglement from an ultrathin nonlinear film

Six-dimensional structured optical tweezers synthetized by rigid-body emulation

Self-healing of structured light: a review

Contact Info

Product

Resources

About