Spin-orbit-induced strong coupling of a single spin to a nanomechanical resonator

András Pályi; P R Struck; Mark Rudner; Karsten Flensberg; Guido Burkard

doi:10.1103/PhysRevLett.108.206811

Spin-orbit-induced strong coupling of a single spin to a nanomechanical resonator

András Pályi, P R Struck, Mark Rudner, Karsten Flensberg, Guido Burkard

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73 Citationer (Scopus)

Abstract

We theoretically investigate the deflection-induced coupling of an electron spin to vibrational motion due to spin-orbit coupling in suspended carbon nanotube quantum dots. Our estimates indicate that, with current capabilities, a quantum dot with an odd number of electrons can serve as a realization of the Jaynes-Cummings model of quantum electrodynamics in the strong-coupling regime. A quantized flexural mode of the suspended tube plays the role of the optical mode and we identify two distinct two-level subspaces, at small and large magnetic field, which can be used as qubits in this setup. The strong intrinsic spin-mechanical coupling allows for detection, as well as manipulation of the spin qubit, and may yield enhanced performance of nanotubes in sensing applications.

Originalsprog	Engelsk
Tidsskrift	Physical Review Letters
Vol/bind	108
Udgave nummer	20
Sider (fra-til)	206811
ISSN	0031-9007
DOI	https://doi.org/10.1103/PhysRevLett.108.206811
Status	Udgivet - 18 maj 2012

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10.1103/PhysRevLett.108.206811

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title = "Spin-orbit-induced strong coupling of a single spin to a nanomechanical resonator",

abstract = "We theoretically investigate the deflection-induced coupling of an electron spin to vibrational motion due to spin-orbit coupling in suspended carbon nanotube quantum dots. Our estimates indicate that, with current capabilities, a quantum dot with an odd number of electrons can serve as a realization of the Jaynes-Cummings model of quantum electrodynamics in the strong-coupling regime. A quantized flexural mode of the suspended tube plays the role of the optical mode and we identify two distinct two-level subspaces, at small and large magnetic field, which can be used as qubits in this setup. The strong intrinsic spin-mechanical coupling allows for detection, as well as manipulation of the spin qubit, and may yield enhanced performance of nanotubes in sensing applications.",

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T1 - Spin-orbit-induced strong coupling of a single spin to a nanomechanical resonator

AU - Pályi, András

AU - Struck, P R

AU - Rudner, Mark

AU - Flensberg, Karsten

AU - Burkard, Guido

PY - 2012/5/18

Y1 - 2012/5/18

N2 - We theoretically investigate the deflection-induced coupling of an electron spin to vibrational motion due to spin-orbit coupling in suspended carbon nanotube quantum dots. Our estimates indicate that, with current capabilities, a quantum dot with an odd number of electrons can serve as a realization of the Jaynes-Cummings model of quantum electrodynamics in the strong-coupling regime. A quantized flexural mode of the suspended tube plays the role of the optical mode and we identify two distinct two-level subspaces, at small and large magnetic field, which can be used as qubits in this setup. The strong intrinsic spin-mechanical coupling allows for detection, as well as manipulation of the spin qubit, and may yield enhanced performance of nanotubes in sensing applications.

AB - We theoretically investigate the deflection-induced coupling of an electron spin to vibrational motion due to spin-orbit coupling in suspended carbon nanotube quantum dots. Our estimates indicate that, with current capabilities, a quantum dot with an odd number of electrons can serve as a realization of the Jaynes-Cummings model of quantum electrodynamics in the strong-coupling regime. A quantized flexural mode of the suspended tube plays the role of the optical mode and we identify two distinct two-level subspaces, at small and large magnetic field, which can be used as qubits in this setup. The strong intrinsic spin-mechanical coupling allows for detection, as well as manipulation of the spin qubit, and may yield enhanced performance of nanotubes in sensing applications.

U2 - 10.1103/PhysRevLett.108.206811

DO - 10.1103/PhysRevLett.108.206811

M3 - Journal article

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VL - 108

SP - 206811

JO - Physical Review Letters

JF - Physical Review Letters

IS - 20

ER -

Spin-orbit-induced strong coupling of a single spin to a nanomechanical resonator

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