PROBLEM TO BE SOLVED: To provide a magnetic field measurement device for measuring the magnetic field of a plurality of arranged cells, wherein the variation in the sensitivity of the magnetic field of cells is reduced by reducing the number of light sources of pump light.SOLUTION: The magnetic field measurement device includes: a pump light irradiation section for irradiating a cell on one end with pump light so that the pump light can pass through the plurality of the cells arranged in one direction in a cell array in which the cells containing a plurality of atoms excited by the pump light are arranged a probe light irradiation unit for irradiating each cell with probe light a detection unit for detecting the probe light emitted to each cell and a temperature control unit for controlling the temperature of each cell in accordance with a control value. The device performs: first processing in which the temperature of each cell is adjusted so that a result of detection of each cell detected in the detection unit when a predetermined magnetic field is applied to the cell array may become a reference value, and the control value, as the reference value, indicating the temperature of each cell is stored per cell in a storage unit and second processing, instead of the first processing, in which a control value in the storage unit is inputted in the temperature control unit and a result of detection of the detection unit is outputted.COPYRIGHT: (C)2013,JPO&INPIT【課題】複数のセルを並べて磁場を計測する磁場計測装置において、ポンプ光の光源の数を低減してセルの磁場感度のばらつきを低減する。【解決手段】磁場計測装置は、ポンプ光により励起される複数の原子を含むセルが配列されたセルアレイに対し、一方向に配列された複数のセルをポンプ光が透過するように一端部のセルにポンプ光を照射するポンプ光照射部、セル毎にプローブ光を照射するプローブ光照射ユニット、各セルに照射したプローブ光を検出する検出ユニット、制御値に従って各セルの温度を制御する温度制御ユニットを有し、セルアレイに一定の磁場を印加したときの検出ユニットで検出される各セルの検出結果が基準値となるように各セルの温度を調整し、基準値となる各セルの温度を示す制御値をセル毎に記憶部に記憶する第1の処理と、第1の処理に代えて記憶部内の制御値を温度制御部に入力して検出部の検出結果を出力する第2の処理とを行う。【選択図】図1
