Three-component variometer based on a scalar potassium sensor

Alexandrov, E. B.; Balabas, M. V.; Kulyasov, V. N.; Иванов, А. Е.; Pazgalev, A. S.; Rasson, Jean L.; Vershovski, Anton K.; Yakobson, N. N.

doi:10.1088/0957-0233/15/5/020

Cited by 46 publications

(29 citation statements)

References 6 publications

(8 reference statements)

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“…Narrow linewidths potentially increase the magnetometric sensitivity and suppress systematic errors in optical magnetometers due to long term baseline drifts [24].…”

Section: Discussionmentioning

confidence: 99%

Theory of double resonance magnetometers based on atomic alignment

2006

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We present a theoretical study of the spectra produced by optical/radio-frequency double resonance devices, in which resonant linearly polarized light is used in the optical pumping and detection processes. We extend previous work by presenting algebraic results which are valid for atomic states with arbitrary angular momenta, arbitrary rf intensities, and arbitrary geometries. The only restriction made is the assumption of low light intensity. The results are discussed in view of their use in optical magnetometers.

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“…Narrow linewidths potentially increase the magnetometric sensitivity and suppress systematic errors in optical magnetometers due to long term baseline drifts [24].…”

Section: Discussionmentioning

confidence: 99%

Theory of double resonance magnetometers based on atomic alignment

2006

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“…Several approaches have been proposed to alleviate the adverse effects of the nonlinear Zeeman effect in all-optical magnetometers, including synchronous optical pumping at the quantum revival frequency given by the quadratic correction to the Zeeman energies (Ref. [42] and references therein), and selective excitation and detection of coherences (that correspond to high-order polarization multipoles) between "stretched" Zeeman sublevels unaffected by nonlinear Zeeman effect [43,44,45].…”

Section: Additional Characteristics Of a Magnetometermentioning

confidence: 99%

“…However, there is a standard technique (see, for example, Refs. [33,48,49]) for converting a scalar sensor into a vector one that relies on the fact that if a small bias field is applied to the sensor in a certain direction in addition to the field to be measured, then the change in the overall field magnitude is linear in the projection of the bias field on the main field, and is only quadratic (and generally negligible) in the projection on the orthogonal plane. Thus, applying three orthogonal bias fields consecutively, and performing three measurements of the overall magneticfield magnitude, one reconstructs the overall field vector.…”

Section: Additional Characteristics Of a Magnetometermentioning

confidence: 99%

Optical magnetometry

2007

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Some of the most sensitive methods of measuring magnetic fields utilize interactions of resonant light with atomic vapor. Recent developments in this vibrant field are improving magnetometers in many traditional areas such as measurement of geomagnetic anomalies and magnetic fields in space, and are opening the door to new ones, including, dynamical measurements of bio-magnetic fields, detection of nuclear magnetic resonance (NMR), magnetic-resonance imaging (MRI), inertialrotation sensing, magnetic microscopy with cold atoms, and tests of fundamental symmetries of Nature.

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“…High-rank polarization moments (PM) and associated high-order coherences have recently drawn attention (see [1,2,3,4,5,6,7,8] and references therein) because they may enhance nonlinear optical effects important in applications such as electromagnetically induced transparency [9], creation of nonclassical atomic and photonic states [10], realization of photon blockades [11], quantum gates [12], photonic switches [13], and atomic magnetometry [14,15].…”

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confidence: 99%

Selective Addressing of High-Rank Atomic Polarization Moments

et al. 2003

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We describe a method of selective generation and study of polarization moments of up to the highest rank κ = 2F possible for a quantum state with total angular momentum F . The technique is based on nonlinear magneto-optical rotation with frequency-modulated light. Various polarization moments are distinguished by the periodicity of light-polarization rotation induced by the atoms during Larmor precession and exhibit distinct light-intensity and frequency dependences. We apply the method to study polarization moments of 87 Rb atoms contained in a vapor cell with antirelaxation coating. Distinct ultra-narrow (1-Hz wide) resonances, corresponding to different multipoles, appear in the magnetic-field dependence of the optical rotation. The use of the highest-multipole resonances has important applications in quantum and nonlinear optics and in magnetometry.PACS numbers: PACS 32.80. Bx,95.75.Hi High-rank polarization moments (PM) and associated high-order coherences have recently drawn attention (see [1,2,3,4,5,6,7,8] While signatures of high-order PM were detected in several experiments [3,4,5,6,8], the methods used in these investigations are not sufficiently selective and/or do not allow real-time manipulation of particular multipoles. Here we describe a method, based on nonlinear optical rotation with frequency-modulated light (FM NMOR) [16], by which one can selectively induce, control, and study any possible multipole moment. Applying the method to 87 Rb atoms in a paraffin-coated cell [17,18], we have verified the expected power and spectral dependences of the resonant signals and obtained a quantitative comparison of relaxation rates for the even-rank moments.The density matrix in the M, M ′ representation for a state with total angular momentum F can be decomposed into PM of rank κ = 0 . . . 2F , uncoupled under rotations, with components q = −κ . . . κ: with surfaces for which the distance to the origin in a given direction is proportional to the probability of finding the projection M = F along this direction. (a): "pure" quadrupole κ = 2, q = 0; (b): κ = 4, q = 0 hexadecapole; (c): same as in (b), but rotated by π/2 around the x-axis; (d): the average of (b) and (c), which has a 4-fold symmetry with respect to rotations aroundx. In all cases, the minimum necessary amount of ρ (0) 0 was added to ensure that all sublevel populations are non-negative [20]. Probability surfaces (a) and (d) rotating aroundx-directed magnetic field with the Larmor frequency correspond to the polarization states produced in this experiment.is uniquely associated with the highest PM for a given state, e.g., the quadrupole moment (κ = 2) for F = 1, or the hexadecapole (κ = 4) for F = 2. The method introduced here exploits the different axial symmetries of the PM (2-fold and 4-fold for the quadrupole and hexadecapole, respectively; Fig. 1) to selectively create and detect them (see also [3,4,5,6]).While multipole moments of rank κ ≤ 2 can be easily generated and detected with weak light (since a photon has spin one), higher-ra...

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Three-component variometer based on a scalar potassium sensor

Cited by 46 publications

References 6 publications

Theory of double resonance magnetometers based on atomic alignment

Theory of double resonance magnetometers based on atomic alignment

Optical magnetometry

Selective Addressing of High-Rank Atomic Polarization Moments

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