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Constructing Nano-Object Quantum Superpositions with a Stern-Gerlach Interferometer

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arxiv 2105.01094 v3 pith:6VIRSKB3 submitted 2021-05-03 quant-ph gr-qc

Constructing Nano-Object Quantum Superpositions with a Stern-Gerlach Interferometer

classification quant-ph gr-qc
keywords quantumspatialsuperpositionsalongaspectsclassicalconstrainingconstruct
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Probing quantum mechanics, quantum aspects of general relativity along with the sensing and the constraining of classical gravity can all be enabled by unprecedented spatial sizes of superpositions of massive objects. In this paper, we show that there is a feasible setup sourced by realizable magnetic field gradients ${\cal O}(10-100)$ Tm$^{-1}$ to construct a large spatial superposition of ${\cal O}(10^{-4}-10^{-8})$ m for masses ${\cal O}(10^{-16}-10^{-14})$ kg over a time period of up to $0.1-10$ seconds.

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