Lee, J.P., Wells, L.M., Villa, B., Kalliakos, S., Stevenson, R.M., Ellis, D.J.P., Farrer, I., Ritchie, D.A., Bennett, A.J.  ORCID: https://orcid.org/0000-0002-5386-3710 and Shields, A.J.
2018.
Controllable photonic time-bin qubits from a quantum dot.
Physical Review X
8
(2)
, 021078.
10.1103/PhysRevX.8.021078
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Abstract
Photonic time-bin qubits are well suited to transmission via optical fibers and waveguide circuits. The states take the form 1 √(2) (α|0⟩+eiϕβ|1⟩), with |0⟩ and |1⟩ referring to the early and late time bin, respectively. By controlling the phase of a laser driving a spin-flip Raman transition in a single-hole-charged InAs quantum dot, we demonstrate complete control over the phase, ϕ. We show that this photon generation process can be performed deterministically, with only a moderate loss in coherence. Finally, we encode different qubits in different energies of the Raman scattered light, paving the way for wavelength-division multiplexing at the single-photon level.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Engineering |
| Publisher: | American Physical Society |
| ISSN: | 2160-3308 |
| Date of First Compliant Deposit: | 17 July 2018 |
| Date of Acceptance: | 27 June 2018 |
| Last Modified: | 08 May 2023 02:17 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/113232 |
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