Enhancing spin-phonon and spin-spin interactions using linear resources in a hybrid quantum system

Hybrid spin-mechanical setups offer a versatile platform for quantum science and technology, but improving the spin-phonon as well as the spin-spin couplings of such systems remains a crucial challenge. Here, we propose and analyze an experimentally feasible and simple method for exponentially enhan...

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Main Authors: Li, Peng-Bo, Zhou, Yuan, Gao, Wei-Bo, Nori, Franco
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/145073
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1450732023-02-28T19:29:35Z Enhancing spin-phonon and spin-spin interactions using linear resources in a hybrid quantum system Li, Peng-Bo Zhou, Yuan Gao, Wei-Bo Nori, Franco School of Physical and Mathematical Sciences Science::Physics Spin-phonon Quantum System Hybrid spin-mechanical setups offer a versatile platform for quantum science and technology, but improving the spin-phonon as well as the spin-spin couplings of such systems remains a crucial challenge. Here, we propose and analyze an experimentally feasible and simple method for exponentially enhancing the spin-phonon and the phonon-mediated spin-spin interactions in a hybrid spin-mechanical setup, using only linear resources. Through modulating the spring constant of the mechanical cantilever with a time-dependent pump, we can acquire a tunable and nonlinear (two-phonon) drive to the mechanical mode, thus amplifying the mechanical zero-point fluctuations and directly enhancing the spin-phonon coupling. This method allows the spin-mechanical system to be driven from the weak-coupling regime to the strong-coupling regime, and even the ultrastrong coupling regime. In the dispersive regime, this method gives rise to a large enhancement of the phonon-mediated spin-spin interactions between distant solid-state spins, typically two orders of magnitude larger than that without modulation. As an example, we show that the proposed scheme can apply to generating entangled states of multiple spins with high fidelities even in the presence of large dissipations. Published version 2020-12-10T04:03:55Z 2020-12-10T04:03:55Z 2020 Journal Article Li, P.-B., Zhou, Y., Gao, W.-B., & Nori, F. (2020). Enhancing spin-phonon and spin-spin interactions using linear resources in a hybrid quantum system. Physical Review Letters, 125(15), 153602-. doi:10.1103/PhysRevLett.125.153602 0031-9007 https://hdl.handle.net/10356/145073 10.1103/PhysRevLett.125.153602 33095609 15 125 en Physical Review Letters © 2020 American Physical Society. All rights reserved. This paper was published in Physical Review Letters and is made available with permission of American Physical Society. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Science::Physics
Spin-phonon
Quantum System
spellingShingle Science::Physics
Spin-phonon
Quantum System
Li, Peng-Bo
Zhou, Yuan
Gao, Wei-Bo
Nori, Franco
Enhancing spin-phonon and spin-spin interactions using linear resources in a hybrid quantum system
description Hybrid spin-mechanical setups offer a versatile platform for quantum science and technology, but improving the spin-phonon as well as the spin-spin couplings of such systems remains a crucial challenge. Here, we propose and analyze an experimentally feasible and simple method for exponentially enhancing the spin-phonon and the phonon-mediated spin-spin interactions in a hybrid spin-mechanical setup, using only linear resources. Through modulating the spring constant of the mechanical cantilever with a time-dependent pump, we can acquire a tunable and nonlinear (two-phonon) drive to the mechanical mode, thus amplifying the mechanical zero-point fluctuations and directly enhancing the spin-phonon coupling. This method allows the spin-mechanical system to be driven from the weak-coupling regime to the strong-coupling regime, and even the ultrastrong coupling regime. In the dispersive regime, this method gives rise to a large enhancement of the phonon-mediated spin-spin interactions between distant solid-state spins, typically two orders of magnitude larger than that without modulation. As an example, we show that the proposed scheme can apply to generating entangled states of multiple spins with high fidelities even in the presence of large dissipations.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Li, Peng-Bo
Zhou, Yuan
Gao, Wei-Bo
Nori, Franco
format Article
author Li, Peng-Bo
Zhou, Yuan
Gao, Wei-Bo
Nori, Franco
author_sort Li, Peng-Bo
title Enhancing spin-phonon and spin-spin interactions using linear resources in a hybrid quantum system
title_short Enhancing spin-phonon and spin-spin interactions using linear resources in a hybrid quantum system
title_full Enhancing spin-phonon and spin-spin interactions using linear resources in a hybrid quantum system
title_fullStr Enhancing spin-phonon and spin-spin interactions using linear resources in a hybrid quantum system
title_full_unstemmed Enhancing spin-phonon and spin-spin interactions using linear resources in a hybrid quantum system
title_sort enhancing spin-phonon and spin-spin interactions using linear resources in a hybrid quantum system
publishDate 2020
url https://hdl.handle.net/10356/145073
_version_ 1759857536122486784