Creation of macroscopic quantum superposition states by a measurement
I.E. Mazets, G. Kurizki, M.K. Oberthaler, J. Schmiedmayer
TL;DR
This paper introduces a measurement-based protocol for creating macroscopic quantum superposition states in Bose-Einstein condensates without needing to switch nonlinear interactions on and off.
Contribution
A novel measurement protocol enabling the generation of macroscopic quantum superpositions without dynamic control of nonlinear interactions.
Findings
Protocol predicts creation of multiatom MQS states.
Does not require switching nonlinear interactions.
Applicable to spinor Bose-Einstein condensates.
Abstract
We propose a novel protocol for the creation of macroscopic quantum superposition (MQS) states based on a measurement of a non-monotonous function of a quantum collective variable. The main advantage of this protocol is that it does not require switching on and off nonlinear interactions in the system. We predict this protocol to allow the creation of multiatom MQS by measuring the number of atoms coherently outcoupled from a two-component (spinor) Bose-Einstein condensate.
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