Bipolar na-agbanwe agbanwemodulator nke usoro
N'ọgbọ egwuregwu nke nkwukọrịta ngwa ngwa na teknụzụ quantum, ndị na-eme mgbanwe ọdịnala na-eche nnukwu nsogbu arụmọrụ ihu! Enweghị ike ịdị ọcha nke mgbaàmà zuru oke, njikwa usoro na-agbanwe agbanwe, na oke oke oriri ike sistemụ - ihe ịma aka ndị a na-egbochi mmepe teknụzụ.
Bipolarmodulator nke usoro elektrọniknwere ike ime mgbanwe n'usoro nke akara ngosi anya nke ọkwa abụọ na-aga n'ihu. Ha nwere njikọta dị elu, obere mfu ntinye, nnukwu bandwit modulation, obere voltaji ọkara-ebili, na ike optical mebiri emebi. A na-ejikarị ha eme ihe maka njikwa chirp optical na sistemụ nkwukọrịta optical dị elu na mmepụta steeti jikọtara ọnụ na sistemụ nkesa isi quantum. Mmepụta nke sidebands na sistemụ ROF na mbelata nke Brillouin scattering (SBS) na-akpali akpali na sistemụ nkwukọrịta eriri optical analog, n'etiti ubi ndị ọzọ.
Iheihe na-eme ka usoro bipolar dịkwuo mmana-enweta njikwa ziri ezi nke usoro nke akara anya site na mgbanwe usoro nke ọkwa abụọ na-aga n'ihu, ma na-egosipụtakwa uru pụrụ iche na nkwukọrịta optical ọsọ dị elu na nkesa igodo quantum.
1. Njikọta dị elu na oke mmebi dị elu: Ọ na-anabata imewe ejikọtara ọnụ nke monolithic, ọ dị obere nha, ma na-akwado ike anya mmebi dị elu. Ọ nwere ike dakọtara ozugbo na isi mmalite laser ike dị elu ma dabara maka mmepụta nke eriri akụkụ millimeter-ebili na sistemụ ROF (Optical Wireless).
2. Mbelata Chirp na njikwa SBS: Na nnyefe coherent dị elu, usoro nkenhazi usoro nkebinwere ike igbochi mkpọtụ nke akara ngosi anya nke ọma. Na nkwukọrịta eriri optical analog, site na ime ka omimi nke nhazi usoro dị mma, enwere ike ibelata mmetụta Brillouin scattering (SBS) nke a na-akpali akpali nke ukwuu, si otú a na-agbatị anya nnyefe.
Na nkesa igodo quantum (QKD), ọnọdụ nke njikọ photon na-arụ ọrụ dị ka "igodo quantum" maka nkwukọrịta nchekwa - izi ezi nke nkwadebe ya na-ekpebi kpọmkwem ihe onwunwe na-anaghị ege ntị nke igodo ahụ. "Mgbanwe" nke modulator nke usoro bipolar na-egosipụta n'ike ya ịgbanwe paramita usoro iji gbanwee nsogbu gburugburu ebe obibi nke njikọ eriri anya dị iche iche (dịka mgbanwe okpomọkụ na ntụgharị usoro nke nrụgide igwe kpatara), na-ahụ na arụmọrụ mmepụta dị elu nke ụzọ photon a na-ejikọta ọnụ. A na-enweta "nkwụsi ike" site na njikwa okpomọkụ ziri ezi na teknụzụ ugboro ugboro mkpọchi usoro, nke na-egbochi mkpọtụ usoro n'okpuru oke mkpọtụ quantum ma gbochie decoherence nke ọnọdụ quantum n'oge nnyefe. Njirimara abụọ a nke "mgbanwe + nkwụsi ike" abụghị naanị na-eme ka ọnụego nkesa njikọ dị mkpirikpi na netwọk mpaghara obodo ukwu dịkwuo elu (dị ka obere njehie nke na-erughị 1% n'ime kilomita 50), kamakwa ọ na-akwado iguzosi ike n'ezi ihe nke igodo na nnyefe dị anya na netwọk obodo (dị ka ihe karịrị otu narị kilomita n'ofe obodo), na-aghọ ihe dị mkpa maka iwulite netwọk nkwukọrịta quantum "nchekwa zuru oke".
Oge ozi: Julaị-22-2025