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An Atomic Magnetometer with Spin-Projection Noise Proportional to (T2)1/2
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An Atomic Magnetometer with Spin-Projection Noise Proportional to (T2)1/2

关键词: AN  Atomic  MAGNETOMETER  with  Spin-Projection  Noise  Proportional  to  T2 
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摘要:Thereisacommonsenseviewforatomicmagnetometersthattheirspin-projection-noises(SPNs)areinverselyproportionalto(T2)1/2;where(T2)1/2isthetransverserelaxationtime.Weanalyzethecurrentatomicmagnetometertypesandgiveacounter-exampleofthiscommonsense;whichistheall-opticalspinprecessionmodulatedthreeaxisatomicmagnetometerproposedbyourgroupin2015.Unliketheotheratomicmagnetometers;theSPNofthiskindofatomicmagnetometersisproportionalto(T2)1/2duetothefactthatthescalefactorbetweenPxandBcanbeunrelatedtothetransverserelaxationtimeT2.WedemonstratethisirrelevanceexperimentallyandanalyzetheSPNtheoretically.Usingshort-pulseultra-highpowerlasertofullypolarizetheatoms;thephenomenonthatSPNdecreaseswithT2mayalsobedemonstratedexperimentallyandanewtoolforresearchingSPNinatomicmagnetometersmayberealized.
刊名:中国物理快报:英文版
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