Quantum nondemolition measurement of mechanical motion quanta

Luca Dellantonio; Oleksandr Kyriienko; Florian Marquardt; Anders Søndberg Sørensen

doi:10.1038/s41467-018-06070-y

Quantum nondemolition measurement of mechanical motion quanta

Luca Dellantonio, Oleksandr Kyriienko, Florian Marquardt, Anders Søndberg Sørensen

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9 Citationer (Scopus)

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Abstract

The fields of optomechanics and electromechanics have facilitated numerous advances in the areas of precision measurement and sensing, ultimately driving the studies of mechanical systems into the quantum regime. To date, however, the quantization of the mechanical motion and the associated quantum jumps between phonon states remains elusive. For optomechanical systems, the coupling to the environment was shown to make the detection of the mechanical mode occupation difficult, typically requiring the single-photon strong-coupling regime. Here, we propose and analyse an electromechanical setup, which allows us to overcome this limitation and resolve the energy levels of a mechanical oscillator. We found that the heating of the membrane, caused by the interaction with the environment and unwanted couplings, can be suppressed for carefully designed electromechanical systems. The results suggest that phonon number measurement is within reach for modern electromechanical setups.

Originalsprog	Engelsk
Artikelnummer	3621
Tidsskrift	Nature Communications
Vol/bind	9
Antal sider	8
ISSN	2041-1723
DOI	https://doi.org/10.1038/s41467-018-06070-y
Status	Udgivet - 1 dec. 2018

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10.1038/s41467-018-06070-yLicens: CC BY

s41467-018-06070-yForlagets udgivne version, 1,52 MBLicens: CC BY

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T1 - Quantum nondemolition measurement of mechanical motion quanta

AU - Dellantonio, Luca

AU - Kyriienko, Oleksandr

AU - Marquardt, Florian

AU - Sørensen, Anders Søndberg

PY - 2018/12/1

Y1 - 2018/12/1

N2 - The fields of optomechanics and electromechanics have facilitated numerous advances in the areas of precision measurement and sensing, ultimately driving the studies of mechanical systems into the quantum regime. To date, however, the quantization of the mechanical motion and the associated quantum jumps between phonon states remains elusive. For optomechanical systems, the coupling to the environment was shown to make the detection of the mechanical mode occupation difficult, typically requiring the single-photon strong-coupling regime. Here, we propose and analyse an electromechanical setup, which allows us to overcome this limitation and resolve the energy levels of a mechanical oscillator. We found that the heating of the membrane, caused by the interaction with the environment and unwanted couplings, can be suppressed for carefully designed electromechanical systems. The results suggest that phonon number measurement is within reach for modern electromechanical setups.

AB - The fields of optomechanics and electromechanics have facilitated numerous advances in the areas of precision measurement and sensing, ultimately driving the studies of mechanical systems into the quantum regime. To date, however, the quantization of the mechanical motion and the associated quantum jumps between phonon states remains elusive. For optomechanical systems, the coupling to the environment was shown to make the detection of the mechanical mode occupation difficult, typically requiring the single-photon strong-coupling regime. Here, we propose and analyse an electromechanical setup, which allows us to overcome this limitation and resolve the energy levels of a mechanical oscillator. We found that the heating of the membrane, caused by the interaction with the environment and unwanted couplings, can be suppressed for carefully designed electromechanical systems. The results suggest that phonon number measurement is within reach for modern electromechanical setups.

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DO - 10.1038/s41467-018-06070-y

M3 - Journal article

C2 - 30190532

SN - 2041-1723

VL - 9

JO - Nature Communications

JF - Nature Communications

M1 - 3621

ER -

Quantum nondemolition measurement of mechanical motion quanta

Abstract

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