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

Condensed Matter Physics

73 Citations (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.

Original language	English
Journal	Physical Review Letters
Volume	108
Issue number	20
Pages (from-to)	206811
ISSN	0031-9007
DOIs	https://doi.org/10.1103/PhysRevLett.108.206811
Publication status	Published - 18 May 2012

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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

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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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