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- W3029920415 abstract "The generation of non-Gaussian quantum states of macroscopic mechanical objects is key to a number of challenges in quantum information science, ranging from fundamental tests of decoherence to quantum communication and sensing. Heralded generation of single-phonon states of mechanical motion is an attractive way toward this goal, as it is, in principle, not limited by the object size. Here we demonstrate a technique that allows for generation and detection of a quantum state of motion by phonon counting measurements near the ground state of a 1.5 MHz micromechanical oscillator. We detect scattered photons from a membrane-in-the-middle optomechanical system using an ultra-narrowband optical filter, and perform Raman-ratio thermometry and second-order intensity interferometry near the motional ground state ( <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mover> <mml:mi>n</mml:mi> <mml:mo stretchy=false>¯<!-- ¯ --></mml:mo> </mml:mover> </mml:mrow> <mml:mo>=</mml:mo> <mml:mn>0.23</mml:mn> <mml:mo>±<!-- ± --></mml:mo> <mml:mn>0.02</mml:mn> <mml:mspace width=thickmathspace /> <mml:mrow class=MJX-TeXAtom-ORD> <mml:mi mathvariant=normal>p</mml:mi> <mml:mi mathvariant=normal>h</mml:mi> <mml:mi mathvariant=normal>o</mml:mi> <mml:mi mathvariant=normal>n</mml:mi> <mml:mi mathvariant=normal>o</mml:mi> <mml:mi mathvariant=normal>n</mml:mi> <mml:mi mathvariant=normal>s</mml:mi> </mml:mrow> </mml:math> ). With an effective mass in the nanogram range, our system lends itself for studies of long-lived non-Gaussian motional states with some of the heaviest objects to date." @default.
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- W3029920415 date "2020-06-17" @default.
- W3029920415 modified "2023-09-23" @default.
- W3029920415 title "Phonon counting thermometry of an ultracoherent membrane resonator near its motional ground state" @default.
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- W3029920415 doi "https://doi.org/10.1364/optica.390939" @default.
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