Quantum interference device, atomic oscillator, electronic apparatus, and vehicle
View Patent ↗A quantum interference device includes an atom cell, a light source emits light to the alkali metal atoms, a photodetector that detects the light transmitted through the atom cell, a thermal conductor, which is disposed so as to straddle the light source side and the photodetector side of the atom cell, and the thermal conductor having higher thermal conductively than the atom cell, and a support, which is disposed so as to be separated from the thermal conductor, and supports the atom cell, the light source, the photodetector, and the thermal conductor in a lump, the support having lower thermal conductivity than the thermal conductor.
1. A quantum interference device comprising:
an atom cell in which alkali metal atoms are encapsulated;
a light source emits light adapted to excite the alkali metal atoms;
a photodetector that detects the light transmitted through the atom cell;
a thermal conductor, which is disposed so as to straddle the light source side and the photodetector side of the atom cell, the thermal conductor having higher thermal conductivity than the atom cell; and
a support, which is disposed so as to be separated from the thermal conductor, and supports the atom cell, the light source, the photodetector, and the thermal conductor in a lump, the support having lower thermal conductivity than the thermal conductor, wherein
the support includes
a frame that extends between the light source side and the photodetector side of the atom cell,
a first support part that is disposed on the light source side with respect to the atom cell, that extends from the frame toward the atom cell, and that supports one of the atom cell and the light source, and
a second support part that is disposed on the photodetector side with respect to the atom cell, that extends from the frame toward the atom cell, and that supports one of the atom cell and the photodetector.
2. The quantum interference device according to claim 1 , further comprising:
a heater supported by the support together with the atom cell, the light source, the photodetector, and the thermal conductor in a lump, and heats the light source and the atom cell via the thermal conductor.
3. The quantum interference device according to claim 2 , wherein
the heater is disposed on the photodetector side with respect to the atom cell.
4. The quantum interference device according to claim 2 , wherein
the heater is disposed on the light source side with respect to the atom cell.
5. The quantum interference device according to claim 4 , wherein
a distance between the heater and the light source is shorter than a distance between the heater and the atom cell.
6. The quantum interference device according to claim 4 , wherein
a distance between the heater and the light source is longer than a distance between the heater and the atom cell.
7. The quantum interference device according to claim 2 , wherein
the thermal conductor is disposed outside a space housing one of the heater and the light source, and
the quantum interference device further comprising a wiring that has a part extending from the first support part to an inside of the space so as to be separated from the thermal conductor, and connected to one of the heater and the light source.
8. The quantum interference device according to claim 2 , further comprising:
a container that houses the atom cell, the light source, the photodetector, the heater, the thermal conductor, and the support,
wherein the thermal conductor is separated from the container.
9. An atomic oscillator comprising:
the quantum interference device according to claim 1 .
10. An electronic apparatus comprising:
the quantum interference device according to claim 1 .