Quantum interference device, an atomic oscillator, an electronic apparatus, and a vehicle
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United States of America Patent
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Jul 2, 2019
Grant Date -
Jan 11, 2018
app pub date -
Jul 6, 2017
filing date -
Jul 8, 2016
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Abstract
A quantum interference device includes an atom cell module including an atom cell in which alkali metal is encapsulated, a light source that emits light adapted to excite the alkali metal, and a heater that heats the atom cell and the light source, a package that houses the atom cell module, and a controller adapted to control drive of the heater so that the light source becomes at a set temperature, R≤(Tv−Tout)/Qv is satisfied, where R [° C./W] is a thermal resistance between the atom cell module and the package, Tv [° C.] is the set temperature, Tout [° C.] is an upper limit value of a usage environmental temperature set to a value lower than the set temperature, Qv [W] is an amount of heat generation of the light source.
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