Parametric amplification and back-action noise squeezing by a qubit-coupled nanoresonator

Junho Suh; Matthew D. Lahaye; Pierre M. Echternach; Keith C. Schwab; Michael L. Roukes

doi:10.1021/nl101844r

Parametric amplification and back-action noise squeezing by a qubit-coupled nanoresonator

Junho Suh, Matthew D. Lahaye, Pierre M. Echternach, Keith C. Schwab, Michael L. Roukes

Department of Physics

Research output: Contribution to journal › Article › peer-review

70 Scopus citations

Abstract

We demonstrate the parametric amplification and noise squeezing of nanomechanical motion utilizing dispersive coupling to a Cooper-pair box qubit. By modulating the qubit bias and resulting mechanical resonance shift, we achieve gain of 30 dB and noise squeezing of 4 dB. This qubit-mediated effect is 3000 times more effective than that resulting from the weak nonlinearity of capacitance to a nearby electrode. This technique may be used to prepare nanomechanical squeezed states.

Original language	English (US)
Pages (from-to)	3990-3994
Number of pages	5
Journal	Nano Letters
Volume	10
Issue number	10
DOIs	https://doi.org/10.1021/nl101844r
State	Published - Oct 13 2010

Keywords

Cooper-pair-box qubit
NEMS
dispersive coupling
noise squeezing
parametric amplification
squeezed state

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

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10.1021/nl101844r

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abstract = "We demonstrate the parametric amplification and noise squeezing of nanomechanical motion utilizing dispersive coupling to a Cooper-pair box qubit. By modulating the qubit bias and resulting mechanical resonance shift, we achieve gain of 30 dB and noise squeezing of 4 dB. This qubit-mediated effect is 3000 times more effective than that resulting from the weak nonlinearity of capacitance to a nearby electrode. This technique may be used to prepare nanomechanical squeezed states.",

keywords = "Cooper-pair-box qubit, NEMS, dispersive coupling, noise squeezing, parametric amplification, squeezed state",

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AU - Lahaye, Matthew D.

AU - Echternach, Pierre M.

AU - Schwab, Keith C.

AU - Roukes, Michael L.

PY - 2010/10/13

Y1 - 2010/10/13

N2 - We demonstrate the parametric amplification and noise squeezing of nanomechanical motion utilizing dispersive coupling to a Cooper-pair box qubit. By modulating the qubit bias and resulting mechanical resonance shift, we achieve gain of 30 dB and noise squeezing of 4 dB. This qubit-mediated effect is 3000 times more effective than that resulting from the weak nonlinearity of capacitance to a nearby electrode. This technique may be used to prepare nanomechanical squeezed states.

AB - We demonstrate the parametric amplification and noise squeezing of nanomechanical motion utilizing dispersive coupling to a Cooper-pair box qubit. By modulating the qubit bias and resulting mechanical resonance shift, we achieve gain of 30 dB and noise squeezing of 4 dB. This qubit-mediated effect is 3000 times more effective than that resulting from the weak nonlinearity of capacitance to a nearby electrode. This technique may be used to prepare nanomechanical squeezed states.

KW - Cooper-pair-box qubit

KW - NEMS

KW - dispersive coupling

KW - noise squeezing

KW - parametric amplification

KW - squeezed state

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Parametric amplification and back-action noise squeezing by a qubit-coupled nanoresonator

Abstract

Keywords

ASJC Scopus subject areas

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