| Full text | |
| Author(s): |
Tiedau, J.
[1]
;
Shchesnovich, V. S.
[2]
;
Mogilevtsev, D.
[2, 3]
;
Ansari, V.
[1]
;
Harder, G.
[1]
;
Bartley, T. J.
[1]
;
Korolkova, N.
[4]
;
Silberhorn, Ch
[1]
Total Authors: 8
|
| Affiliation: | [1] Univ Paderborn, Appl Phys, Warburgerstr 100, D-33098 Paderborn - Germany
[2] Univ Fed ABC, Ctr Ciencias Nat & Humanas, BR-09210170 Santo Andre, SP - Brazil
[3] Belarus Natl Acad Sci, Inst Phys, F Skarina Ave 68, Minsk 220072 - Byelarus
[4] Univ St Andrews, Sch Phys & Astron, St Andrews KY16 9SS, Fife - Scotland
Total Affiliations: 4
|
| Document type: | Journal article |
| Source: | NEW JOURNAL OF PHYSICS; v. 20, MAR 2018. |
| Web of Science Citations: | 4 |
| Abstract | |
Any measurement scheme involving interference of quantum states of the electromagnetic field necessarily mixes information about the spatiotemporal structure of these fields and quantum states in the recorded data. Weshow that in this case, a trade-off is possible between extracting information about the quantum states and the structure of the underlying fields, with the modal overlap being either a goal or a convenient tool of the reconstruction. Weshow that varying quantum states in a controlled way allows one to infer temporal profiles of modes. Vice versa, for the known quantum state of the probe and controlled variable overlap, one can infer the quantum state of the signal. We demonstrate this trade-off. by performing an experiment using the simplest on-off detection in an unbalanced weak homodyning scheme. For the single-mode case, we demonstrate experimentally inference of the overlap and a few-photon signal state. Moreover, we show theoretically that the same single-detector scheme is sufficient even for arbitrary multi-mode fields. (AU) | |
| FAPESP's process: | 14/21188-0 - Quantum dynamics of systems with dissipative coupling |
| Grantee: | Valery Shchesnovich |
| Support Opportunities: | Research Grants - Visiting Researcher Grant - International |
| FAPESP's process: | 15/23296-8 - Behavior of identical particles in quantum networks and the Boson Sampling |
| Grantee: | Valery Shchesnovich |
| Support Opportunities: | Regular Research Grants |