PROBLEM TO BE SOLVED: To provide technology which improves measurement accuracy of a magnetic field by controlling temperature of each cell in a magnetic field measurement device for measuring the magnetic field by lining up a plurality of cells.SOLUTION: The magnetic field measurement device includes: a cell array having the plurality of cells containing a plurality of atoms to be excited by pump light magnetic field detection sections for exciting the atoms in the cells by irradiating each cell with the pump light, and detecting the magnetic fields in each cell by detecting probe light which is penetrated through each cell temperature control sections for controlling the temperature of each cell in accordance with input control values and a controller for carrying out a first process in which the temperature of each cell is adjusted so that detection results of the magnetic field of each cell to be detected in the magnetic field detection sections at the time when a prescribed magnetic field is impressed to the cell array become a reference value, and control values showing the temperature of each cell when becoming the reference value are stored in a storage section for every cell as temperature information, and for carrying out a second process in place of the first process, in which the control value based on the temperature information in the storage section is inputted to the temperature control section and the result detected by the magnetic field detection section is outputted.COPYRIGHT: (C)2012,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、各セルの温度を制御して磁場の測定精度を向上させる技術を提供する。【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を複数有するセルアレイと、各セルに対しポンプ光を照射してセル内の原子を励起させ、各セルを透過したプローブ光を検出して各セルにおける磁場を検出する磁場検出部と、入力された制御値に従って各セルの温度を制御する温度制御部と、セルアレイに対して一定の磁場を印加したときの磁場検出部で検出される各セルの磁場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、基準値となるときの各セルの温度を示す制御値を温度情報として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、記憶部内の温度情報に基づく制御値を温度制御部に入力し、磁場検出部による検出結果を出力する第2の処理とを行う制御部とを備える。【選択図】図1
