Spin-Mechanical Scheme with Color Centers in Hexagonal Boron Nitride Membranes

Physical Review Letters
M AbdiMartin B Plenio

Abstract

Recently observed quantum emitters in hexagonal boron nitride (hBN) membranes have a potential for achieving high accessibility and controllability thanks to the lower spatial dimension. Moreover, these objects naturally have a high sensitivity to vibrations of the hosting membrane due to its low mass density and high elasticity modulus. Here, we propose and analyze a spin-mechanical system based on color centers in a suspended hBN mechanical resonator. Through group theoretical analyses and ab initio calculation of the electronic and spin properties of such a system, we identify a spin doublet ground state and demonstrate that a spin-motion interaction can be engineered, which enables ground-state cooling of the mechanical resonator. We also present a toolbox for initialization, rotation, and readout of the defect spin qubit. As a result, the proposed setup presents the possibility for studying a wide range of physics. To illustrate its assets, we show that a fast and noise-resilient preparation of a multicomponent cat state and a squeezed state of the mechanical resonator is possible; the latter is achieved by realizing the extremely detuned, ultrastrong coupling regime of the Rabi model, where a phonon superradiant phase tra...Continue Reading

References

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Nov 14, 2015·Physical Review Letters·Myung-Joong HwangMartin B Plenio
Jun 25, 2016·Physical Review Letters·M AbdiM J Hartmann
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Mar 4, 2017·Physical Review Letters·Ricardo PueblaMartin B Plenio

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Citations

Jan 16, 2019·Nature Communications·Annemarie L ExarhosLee C Bassett
Feb 6, 2019·Physical Review Letters·Mehdi Abdi, Martin B Plenio
May 23, 2020·Physical Review Letters·Obinna AbahMauro Paternostro
Feb 9, 2019·Annual Review of Physical Chemistry·Milos Toth, Igor Aharonovich
Feb 26, 2020·Nature Materials·Andreas GottschollVladimir Dyakonov
Jun 23, 2018·Nano Letters·Gichang NohJieun Lee
Jan 25, 2019·Nano Letters·Prasoon K ShandilyaPaul E Barclay

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