Backaction-evading measurement of entanglement in optomechanics
Massel, F. (2019). Backaction-evading measurement of entanglement in optomechanics. Physical Review A, 100(2), Article 023824. https://doi.org/10.1103/PhysRevA.100.023824
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Physical Review AAuthors
Date
2019Copyright
© 2019 American Physical Society
We propose here a fully backaction-evading scheme for the measurement of the entanglement between two nanomechanical resonators. The system, which consists of two mechanical oscillators, coupled to a single mode of an electromagnetic resonant cavity through a radiation-pressure interaction term, is driven by two pump tones and four detection tones. As previously discussed in the literature, the former induce entanglement between the two mechanical oscillators, while we show here that a specific choice of phase and amplitude of the detection tones allows for direct pairwise reconstruction of the collective quadrature fluctuations of the mechanical oscillators belonging to quantum-mechanics-free subspaces, thereby providing direct evidence of the entanglement properties of the two mechanical resonators.
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American Physical SocietyISSN Search the Publication Forum
2469-9926Publication in research information system
https://converis.jyu.fi/converis/portal/detail/Publication/32303736
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Academy of FinlandFunding program(s)
Research post as Academy Research Fellow, AoF
Additional information about funding
This work was supported by the Academy of Finland (Contract No. 275245).License
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