Distributed quantum metrology with a single squeezed-vacuum source
Research output: Contribution to journal › Article
We propose an interferometric scheme for the estimation of a linear combination with non-negative weights of an arbitrary number M > 1 of unknown phase delays, distributed across an M-channel linear optical network, with Heisenberg-limited sensitivity. This is achieved without the need of any sources of photon-number or entangled states, photon-number resolving detectors or auxiliary interferometric channels. Indeed, the proposed protocol remarkably relys upon a single squeezed-state source, an antisqueezing operation at the interferometer output, and on-off photodetectors.
| Original language | English |
|---|---|
| Article number | 032024(R) |
| Journal | Physical Review Research |
| Volume | 1 |
| DOIs | |
| Publication status | Published - 25 Nov 2019 |
Documents
- Distributed quantum metrology with a single squeezed-vacuum source
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Licence: CC BY
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