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Updated: Jul 9, 2026

Gradient Echo Quantum Memory in Warm Atomic Vapor
Published on: November 12, 2013
Controlled optimization of mode conversion from electron Bernstein waves to extraordinary mode in magnetized plasma
B Jones1, P C Efthimion, G Taylor
1Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543, USA.
Abstract:
In the CDX-U spherical torus, agreement between radiation temperature and Thomson scattering electron temperature profiles indicates approximately 100% conversion of thermally emitted electron Bernstein waves to the X mode. This has been achieved by controlling the electron density scale length (L(n)) in the conversion region with a local limiter outside the last closed flux surface, shortening L(n) to the theoretically required value for optimal conversion. From symmetry of the conversion process, prospects for efficient coupling in heating and current drive scenarios are strongly supported.
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