Gigahertz-bandwidth optical memory in Pr<sup>3+</sup>:Y<sub>2</sub>SiO<sub>5</sub>
نویسندگان
چکیده
We experimentally study a broadband implementation of the atomic frequency comb (AFC) rephasing protocol with cryogenically cooled Pr$^{3+}$:Y$_2$SiO$_5$ crystal. To allow for storage pulses, we explore novel regime where input photonic bandwidth closely matches inhomogeneous broadening material $(\sim5\,\textrm{GHz})$, thereby significantly exceeding hyperfine ground and excited state splitting $(\sim10\,\textrm{MHz})$. Through an investigation different AFC preparation parameters, measure maximum efficiency $10\%$ after time $12.5\,$ns. With suboptimal AFC, witness up to 12 rephased temporal modes.
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1Consorzio Nazionale per le Telecomunicazioni (CNIT), Photonic Networks and Technologies National Laboratory, Pisa, Italy. 2Consorzio Nazionale per le Telecomunicazioni (CNIT), University of Udine, Udine, Italy. 3Consorzio Nazionale per le Telecomunicazioni (CNIT), Scuola Superiore Sant’Anna, Pisa, Italy. 4IMEC, Leuven, Belgium. 5Cambridge Graphene Centre, Cambridge University, Cambridge, UK. *...
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ژورنال
عنوان ژورنال: Optics Letters
سال: 2021
ISSN: ['1539-4794', '1071-2763', '0146-9592', '1071-8842']
DOI: https://doi.org/10.1364/ol.423642