Three-dimensional optical manipulation of a single electron spin

Geiselmann, Michael; Juan, Mathieu L.; Renger, Jan; Say, Jana M.; Brown, Louise J.; Abajo, F. Javier García de; Koppens, Frank H. L.; Quidant, Romain

doi:10.1038/nnano.2012.259

Cited by 147 publications

(109 citation statements)

References 38 publications

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“…Using parametric coupling, the particle can be synchronized to an external source. A synchronized nanoparticle can act as a coherent nanoscale source of electric, magnetic [25,26] or gravitational forces [27]. The present work adds to our understanding of the dynamics of levitated nanoparticles in high vacuum and paves the way for applications in sensing [24,28] and macroscopic quantum mechanics [29,30].…”

Section: Pacs Numbersmentioning

confidence: 78%

Nonlinear Mode Coupling and Synchronization of a Vacuum-Trapped Nanoparticle

et al. 2014

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We study the dynamics of a laser-trapped nanoparticle in high vacuum. Using parametric coupling to an external excitation source, the linewidth of the nanoparticle's oscillation can be reduced by three orders of magnitude. We show that the oscillation of the nanoparticle and the excitation source are synchronized, exhibiting a well-defined phase relationship. Furthermore, the external source can be used to controllably drive the nanoparticle into the nonlinear regime, thereby generating strong coupling between the different translational modes of the nanoparticle. Our work contributes to the understanding of the nonlinear dynamics of levitated nanoparticles in high vacuum and paves the way for studies of pattern formation, chaos, and stochastic resonance. PACS numbers:Synchronization of spatially separate processes occur in biological, chemical, physical, and social systems, and have attracted the interest of scientists for centuries. Nanomechanical oscillators naturally lend themselves to the experimental [1-5] and theoretical [6] study of nonlinear behavior and synchronization. The nonlinear regime can be exploited for applications including phonon-cavity cooling [7,8], precision frequency measurements [9], signal amplification via stochastic resonance [10,11], mass sensing [12] and quantum non-demolition measurements [13][14][15]. In addition, nonlinear mechanical oscillators have been proposed as memory elements [16,17] and to hallmark classical to quantum transitions [18].

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Section: Pacs Numbersmentioning

confidence: 78%

Nonlinear Mode Coupling and Synchronization of a Vacuum-Trapped Nanoparticle

et al. 2014

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“…Due to their strong and stable fluorescence, NV − centres hosted in nanodiamonds have been used as bio-labels for high-resolution, real-time and low-disruption imaging of living cells 15 . Previous investigations on liquid trapping 16,17 and levitating nanodiamonds 18 used laser light at 1,064 nm, which is far away from the ZPL. None of these experiments reported any effects due to the presence of the NV − centres on the external degrees of freedom of the nanodiamond in the optical trap.…”

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confidence: 99%

Cooperatively enhanced dipole forces from artificial atoms in trapped nanodiamonds

et al. 2016

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Optical trapping is a powerful tool to manipulate small particles, from micrometre-size beads in liquid environments 1 to single atoms in vacuum 2 . The trapping mechanism relies on the interaction between a dipole and the electric field of laser light. In atom trapping, the dominant contribution to the associated force typically comes from the allowed optical transition closest to the laser wavelength, whereas for mesoscopic particles it is given by the polarizability of the bulk material. Here, we show that for nanoscale diamond crystals containing a large number of artificial atoms, nitrogen-vacancy colour centres, the contributions from both the nanodiamond and the colour centres to the optical trapping strength can be simultaneously observed in a noisy liquid environment. For wavelengths around the zero-phonon line transition of the colour centres, we observe a 10% increase of overall trapping strength. The magnitude of this e ect suggests that due to the large density of centres, cooperative e ects between the artificial atoms contribute to the observed modification of the trapping strength. Our approach may enable the study of cooperativity in nanoscale solid-state systems and the use of atomic physics techniques in the field of nano-manipulation.Light forces are key to many cold-atom experiments. Atoms exhibit sharp electronic transitions; these are associated with a pole in the complex atomic polarizability that ultimately enables detuning-and state-dependent optical manipulation. The strength of the optical forces, both reactive and dissipative, can be controlled via detuning of the laser from the atomic resonance. In the case of the reactive dipole force, which is at the centre of this work, the sign of the detuning even determines whether the optical potential associated with the force is repulsive (photon energy larger than the transition energy) or attractive (photon energy smaller than the transition energy). Complex optical near-field traps for cold atoms have been demonstrated 3 as a result of this extra degree of freedom.

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“…z of the NV center is not a problem as the possibility to align the z axis of the defect in the nano-diamond to any desired direction has been recently demonstrated [27,28]. We consider the Zeeman splitting of |+1 and |−1 due to the zeroth order expansion of B z to be cancelled by addition of a uniform magnetic field along z.…”

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Matter-Wave Interferometry of a Levitated Thermal Nano-Oscillator Induced and Probed by a Spin

et al. 2013

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We show how the interference between spatially separated states of the center of mass (COM) of a mesoscopic harmonic oscillator can be evidenced by coupling it to a spin and performing solely spin manipulations and measurements (Ramsey Interferometry). We propose to use an optically levitated diamond bead containing an NV center spin. The nano-scale size of the bead makes the motional decoherence due to levitation negligible. The form of the spin-motion coupling ensures that the scheme works for thermal states so that moderate feedback cooling suffices. No separate control or observation of the COM state is required and thereby one dispenses with cavities, spatially resolved detection and low mass-dispersion ensembles. The controllable relative phase in the Ramsey interferometry stems from a gravitational potential difference so that it uniquely evidences coherence between states which involve the whole nano-crystal being in spatially distinct locations.

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Three-dimensional optical manipulation of a single electron spin

Cited by 147 publications

References 38 publications

Nonlinear Mode Coupling and Synchronization of a Vacuum-Trapped Nanoparticle

Nonlinear Mode Coupling and Synchronization of a Vacuum-Trapped Nanoparticle

Cooperatively enhanced dipole forces from artificial atoms in trapped nanodiamonds

Matter-Wave Interferometry of a Levitated Thermal Nano-Oscillator Induced and Probed by a Spin

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