Pino_2018_Quantum_Sci._Technol._3_025001.pdf (1.36 MB)
On-chip quantum interference of a superconducting microsphere
journal contribution
posted on 2023-06-09, 13:01 authored by H Pino, J Prat-Camps, K Sinha, B Prasanna Venkatesh, O Romero-IsartWe propose and analyze an all-magnetic scheme to perform a Young's double slit experiment with a micron-sized superconducting sphere of mass $\gtrsim {10}^{13}$ amu. We show that its center of mass could be prepared in a spatial quantum superposition state with an extent of the order of half a micrometer. The scheme is based on magnetically levitating the sphere above a superconducting chip and letting it skate through a static magnetic potential landscape where it interacts for short intervals with quantum circuits. In this way, a protocol for fast quantum interferometry using quantum magnetomechanics is passively implemented. Such a table-top earth-based quantum experiment would operate in a parameter regime where gravitational energy scales become relevant. In particular, we show that the faint parameter-free gravitationally-induced decoherence collapse model, proposed by Diósi and Penrose, could be unambiguously falsified.
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- Published
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- Published version
Journal
Quantum Science and TechnologyISSN
2058-9565Publisher
IOP PublishingExternal DOI
Issue
025001Volume
3Department affiliated with
- Informatics Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2018-04-24First Open Access (FOA) Date
2018-04-24First Compliant Deposit (FCD) Date
2018-04-24Usage metrics
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