On-demand assembly of optically-levitated nanoparticle arrays in vacuum

Yan, Jun; Yu, Xudong; Han, Zheng; Li, Tongcang; Zhang, Jing

doi:10.48550/arxiv.2207.03641

Cited by 4 publications

(6 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, to scale up by another order of magnitude or have particles with identical trap frequencies, both the tweezer array generation and de- tection schemes would have to be modified. Generating large particle arrays with separation greater than 1 µm would require either an AOD with a larger bandwidth or two AODs to generate 2D tweezer arrays [27,53]. The detection and individual feedback cooling of large particle arrays can be achieved by spatially distributing the forward scattered light or using a heterodyne detection scheme.…”

Section: Simultaneous Two-particle Coolingmentioning

confidence: 99%

Scalable all-optical cold damping of levitated nanoparticles

et al. 2022

View full text Add to dashboard Cite

The field of levitodynamics has made significant progress towards controlling and studying the motion of a levitated nanoparticle. Motional control relies on either autonomous feedback via a cavity or measurement-based feedback via external forces. Recent demonstrations of measurementbased ground-state cooling of a single nanoparticle employ linear velocity feedback, also called cold damping, and require the use of electrostatic forces on charged particles via external electrodes.Here we introduce a novel all-optical cold damping scheme based on spatial modulation of the trap position that is scalable to multiple particles. The scheme relies on using programmable optical tweezers to provide full independent control over trap frequency and position of each tweezer. We show that the technique cools the center-of-mass motion of particles along one axis down to 17 mK at a pressure of 2 × 10 −6 mbar and demonstrate its scalability by simultaneously cooling the motion of two particles. Our work paves the way towards studying quantum interactions between particles, achieving 3D quantum control of particle motion without cavity-based cooling, electrodes or charged particles, and probing multipartite entanglement in levitated optomechanical systems.

show abstract

Section: Simultaneous Two-particle Coolingmentioning

confidence: 99%

Scalable all-optical cold damping of levitated nanoparticles

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Finally, we exploit this time dependent coupling to engineer a phonon laser pulse train. The generation of pulsed phonon lasing in the levitated nanoparticle system extends the fundamental analogies between optical and mechanical lasers [12,35] and is relevant to levitated phonon transport, sensing and information processing technologies [25,45] The manuscript is arranged as follows. In section 2, we discuss the experimental configuration and detailed theoretical framework.…”

Section: Introductionmentioning

confidence: 99%

Q-switching of an optical tweezer phonon laser

Xiao¹,

Pal²,

Sharma³

et al. 2022

J. Phys. B: At. Mol. Opt. Phys.

View full text Add to dashboard Cite

We theoretically investigate the active Q-switching of an optical tweezer phonon laser [R. M. Pettit et al., Nature Photonics 13, 402 (2019)] operating in a coupled-mode configuration. One of the modes is lasing and outcouples to the second mode. The coupling is induced via asymmetric modulation of the trap potential in the transverse plane of the trapped nanoparticle. We show that a time-modulated coherent coupling between two transverse modes of oscillation of an optically levitated nanoparticle holds the key to coherent pulsed phonon transfer between them. Our analytical and numerical results on the position dynamics, phonon dynamics as well as second order coherence confirms pulsed phonon lasing transfer between the transverse modes. Our work on Q-switched operation of the optical tweezer phonon laser enhances understanding of the analogies between optical and mechanical lasers, and is relevant to levitated phonon transport, acoustic imaging, sensing and information processing technologies.

show abstract

“…Additionally, previous studies demonstrated the potential of a levitated nanoparticle to explore various fields of physics, such as nonequilibrium physics [21][22][23][24][25][26][27] and quantum sensing [28][29][30][31][32][33][34][35][36][37]. Remarkably, recent experimental studies have shown the possibility of extending these systems to multi-nanoparticle setups [38][39][40][41][42][43]. In particular, Ref.…”

mentioning

confidence: 99%

“…In particular, Ref. [43] has reported a realization of an on-demand assembly of levitated nanoparticles, in which optical tweezers are used to trap and arrange the nanoparticles one by one.…”

mentioning

confidence: 99%