| 摘要 |
<p>Apparatus comprises at least two single-photon sources (3) supported on a common substrate (4), each photon source comprising a pillar (5) upstanding from the substrate in a first direction and in which a quantum dot (6) is disposed within a cavity (7) formed between two mirrors (8, 9), the pillar having a light-emitting surface (10). The apparatus also comprises an optical fibre bundle (11) comprising at least two optical fibres (12) having light-receiving ends (15) and a jig (17) for removably coupling the light receiving ends to the light emitting surfaces. The cavities each have a quality factor of at least 10 5 and the pillars have a diameter in a second, transverse direction such that the cavities exhibit the same optical mode. Controlling the optical modes of the cavities in the first and second directions helps to limit the characteristics of photons emitted by the photon sources so that the photons are indistinguishable.</p> |
