Hybrid Quantum System with Nitrogen-Vacancy Centers in Diamond Coupled to Surface-Phonon Polaritons in Piezomagnetic Superlattices

Li, Pengbo; Nori, Franco

doi:10.1103/physrevapplied.10.024011

Cited by 45 publications

(28 citation statements)

References 80 publications

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“…Color centers in diamond, such as germanium-vacancy (GeV) [37], nitrogen-vacancy (NV) center [38][39][40][41][42] and silicon-vacancy (SiV) center [43][44][45][46], play an important role in quantum science and technology [47][48][49][50][51]. Due to the high controllability and long coherence time [52][53][54][55][56][57][58][59][60], NV centers stand out among all kinds of solid-state systems.…”

Section: Introductionmentioning

confidence: 99%

Phononic-waveguide-assisted steady-state entanglement of silicon-vacancy centers

Qiao

Dong

et al. 2020

Phys. Rev. A

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Multiparticle entanglement is of great significance for quantum metrology and quantum information processing. We here present an efficient scheme to generate stable multiparticle entanglement in a solid state setup, where an array of silicon-vacancy centers are embedded in a quasi-onedimensional acoustic diamond waveguide. In this scheme, the continuum of phonon modes induces a controllable dissipative coupling among the SiV centers. We show that, by an appropriate choice of the distance between the SiV centers, the dipole-dipole interactions can be switched off due to destructive interferences, thus realizing a Dicke superradiance model. This gives rise to an entangled steady state of SiV centers with high fidelities. The protocol provides a feasible setup for the generation of multiparticle entanglement in a solid state system.

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Section: Introductionmentioning

confidence: 99%

Phononic-waveguide-assisted steady-state entanglement of silicon-vacancy centers

Qiao

Dong

et al. 2020

Phys. Rev. A

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“…We now take into consideration the couplings between the mechanical torsional mode and the single NV center. Before proceeding, we note that coherent interactions between NV centers and several types of mechanical resonators have been studied [68,69]. These mechanical resonators include clamped cantilevers [70], optically trapped nano-diamond crystals [71][72][73], suspended carbon nanotubes [74], etc.…”

Section: Spin-torsion Couplingsmentioning

confidence: 99%

Interfacing a Topological Qubit with a Spin Qubit in a Hybrid Quantum System

Zhou

et al. 2019

Phys. Rev. Applied

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We present and analyze a hybrid quantum system that interfaces a Majorana-hosted semiconductor nanowire with a single nitrogen-vacancy (NV) center via a magnetized torsional cantilever. We show that, the torsional mode of the mechanical resonator can strongly couple to the Majorana qubit and the spin qubit simultaneously, which allows to interface them for quantum state conversion through a dark state protocol. This work provides a promising interface between the topological qubit and the conventional spin qubit, and can find interesting applications in quantum information and computation.

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“…Solid defects in diamond including nitrogen-vacancy (NV) [31][32][33][34][35][36][37][38][39][40][41][42], silicon-vacancy (SiV) [43][44][45][46][47][48][49][50][51][52][53], and germanium-vacancy (GeV) [54] color centers have been extensively studied in recent years. They consist of a substitutional impurity atom replacing the carbon atom and adjacent to vacancies.…”

Section: Introductionmentioning

confidence: 99%

Dissipation-assisted preparation of steady spin-squeezed states of SiV centers

et al. 2021

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We propose an efficient scheme for generating spin-squeezed states at steady state in a spinmechanical hybrid system, where an ensemble of SiV centers are coupled to a strongly damped nanomechanical resonator. We show that, there exists a collective steady state in the system, which is exactly formed by the collective spin states plus the zero excitation state of the mechanical mode. The generation of the steady spin-squeezed state is based on a dissipative quantum dynamical process in which the mechanical dissipation plays a positive role but without destroying the target state. We demonstrate that the spin-squeezed steady state can be deterministically prepared via dissipative means, with the optimal spin squeezing up to 4/N in the ideal case, where N is the number of spins. This work provides a promising platform for quantum information processing and quantum metrology.

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Hybrid Quantum System with Nitrogen-Vacancy Centers in Diamond Coupled to Surface-Phonon Polaritons in Piezomagnetic Superlattices

Cited by 45 publications

References 80 publications

Phononic-waveguide-assisted steady-state entanglement of silicon-vacancy centers

Phononic-waveguide-assisted steady-state entanglement of silicon-vacancy centers

Interfacing a Topological Qubit with a Spin Qubit in a Hybrid Quantum System

Dissipation-assisted preparation of steady spin-squeezed states of SiV centers

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