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Two-mode Schrodinge...
Two-mode Schrodinger-cat states with nonlinear optomechanics : generation and verification of non-Gaussian mechanical entanglement
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- Kanari-Naish, Lydia A. (författare)
- Imperial Coll London, Blacken Lab, QOLS, London SW7 2BW, England.
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- Clarke, Jack (författare)
- Imperial Coll London, Blacken Lab, QOLS, London SW7 2BW, England.
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- Qvarfort, Sofia (författare)
- Stockholms universitet,Fysikum,Nordiska institutet för teoretisk fysik (Nordita),Imperial College London, United Kingdom,Nordita SU, Imperial Coll London, Blacken Lab, QOLS, London SW7 2BW, England.;UCL, Dept Phys & Astron, London W E 6BT, England.;Stockholm Univ, Hannes Alfvens Vag 12, SE-10691 Stockholm, Sweden.;Stockholm Univ, AlbaNova Univ Ctr, Dept Phys, SE-10691 Stockholm, Sweden.
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- Vanner, Michael R. (författare)
- Imperial Coll London, Blacken Lab, QOLS, London SW7 2BW, England.
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Imperial Coll London, Blacken Lab, QOLS, London SW7 2BW, England Fysikum (creator_code:org_t)
- 2022-05-26
- 2022
- Engelska.
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Ingår i: Quantum Science and Technology. - : IOP Publishing. - 2058-9565. ; 7:3
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Cavity quantum optomechanics has emerged as a new platform for quantum science and technology with applications ranging from quantum-information processing to tests of the foundations of physics. Of crucial importance for optomechanics is the generation and verification of non-Gaussian states of motion and a key outstanding challenge is the observation of a canonical two-mode Schrodinger-cat state in the displacement of two mechanical oscillators. In this work, we introduce a pulsed approach that utilizes the nonlinearity of the radiation-pressure interaction combined with photon-counting measurements to generate this entangled non-Gaussian mechanical state, and, importantly, describe a protocol using subsequent pulsed interactions to verify the non-Gaussian entanglement generated. Our pulsed verification protocol allows quadrature moments of the two mechanical oscillators to be measured up to any finite order providing a toolset for experimental characterisation of bipartite mechanical quantum states and allowing a broad range of inseparability criteria to be evaluated. Key experimental factors, such as optical loss and open-system dynamics, are carefully analyzed and we show that the scheme is feasible with only minor improvements to current experiments that operate outside the resolved-sideband regime. Our scheme provides a new avenue for quantum experiments with entangled mechanical oscillators and offers significant potential for further research and development that utilizes such non-Gaussian states for quantum-information and sensing applications, and for studying the quantum-to-classical transition.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Nyckelord
- quantum optics
- quantum optomechanics
- non-Gaussianity
- quantum measurement
- entanglement
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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