Quantum interference device, atomic oscillator, electronic device, and moving object

摘要

A quantum interference device includes: a gas cell housing metal atoms; a light emitting unit emitting light to the gas cell; a light receiving unit receiving light penetrating the gas cell; a cell temperature control unit controlling the gas cell temperature; a light emitting unit temperature control unit controlling the light emitting unit temperature; an analog circuit including a light receiving circuit which processes a light receiving signal output from the light receiving unit, and controls an atomic resonance signal; a digital circuit controlling the analog circuit; a first substrate; and a second substrate. The light receiving circuit is provided on the first substrate. At least one of the cell temperature control unit, the light emitting unit temperature control unit, and the digital circuit is provided on the second substrate. The first and second substrates at least partially overlap with each other in a plan view.

主权项

1. A quantum interference device comprising:
a gas cell in which metal atoms are sealed; a light emitting unit which emits light to the gas cell; a light receiving unit which receives light penetrating the gas cell; a cell temperature control unit which controls a temperature of the gas cell; a light emitting unit temperature control unit which controls a temperature of the light emitting unit; an analog circuit which includes a light receiving circuit which processes a light receiving signal output from the light receiving unit, and controls an atomic resonance signal; a digital circuit which controls the analog circuit; a first substrate; a second substrate; a housing which contains the gas cell; a housing temperature control unit which controls a temperature in the housing; a heating unit which is driven by a power supply, is controlled by the cell temperature control unit, and heats the gas cell; a boosting circuit which increases a voltage applied to the heating unit; and a third substrate on which at least one of the boosting circuit and the housing temperature control unit is provided, wherein the light receiving circuit is provided on the first substrate, at least one of the cell temperature control unit, the light emitting unit temperature control unit, and the digital circuit is provided on the second substrate, the first substrate and the second substrate at least partially overlap each other in a plan view, and the first substrate and the third substrate at least partially overlap with each other in the plan view.