Four-wave mixing from Fe3+ spins in sapphire.
نویسندگان
چکیده
Fe(3+) ions in sapphire exhibit an electron spin resonance which interacts strongly with high-Q whispering gallery modes at microwave frequencies. We report the first observation of a third-order paramagnetic nonlinear susceptibility in such a resonator at cryogenic temperatures and the first demonstration of four-wave mixing using this parametric nonlinearity. This observation of an all-microwave nonlinearity is an enabling step towards a host of quantum measurement and control applications which utilize spins in solids.
منابع مشابه
Frequency conversion in a high Q-factor sapphire whispering gallery mode resonator due to paramagnetic nonlinearity.
Nonlinear frequency conversion is a well known and widely exploited family of effects in optics, often arising from a Kerr nonlinearity in a crystal medium. Here, we report high stability frequency conversion in the microwave regime due to a χ(3) nonlinearity in sapphire introduced by a dilute concentration of paramagnetic spins. First, we produce a high stability comb from two microwave fields...
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عنوان ژورنال:
- Physical review letters
دوره 108 9 شماره
صفحات -
تاریخ انتشار 2012