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  Achieving the ultimate quantum timing resolution

Ansari, V., Brecht, B., Gil-López, J., Donohue, J. M., Řeháček, J., Hradil, Z., et al. (2021). Achieving the ultimate quantum timing resolution. PRX Quantum 2, 010301 (2021), 2(1): 010301. doi:10.1103/PRXQuantum.2.010301.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0008-1298-8 Version Permalink: https://hdl.handle.net/21.11116/0000-0008-1299-7
Genre: Journal Article

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 Creators:
Ansari, Vahid1, Author
Brecht, Benjamin1, Author
Gil-López, Jano1, Author
Donohue, John M.1, Author
Řeháček, Jaroslav1, Author
Hradil, Zdeněk1, Author
Sánchez-Soto, Luis L.2, Author
Silberhorn, Christine1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Quantumness, Tomography, Entanglement, and Codes, Emeritus Group Leuchs, Emeritus Groups, Max Planck Institute for the Science of Light, Max Planck Society, Staudtstraße 2, 91058 Erlangen, DE, ou_2364709              

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Free keywords: Quantum Physics, quant-ph
 Abstract: Accurate time-delay measurement is at the core of many modern technologies.
Here, we present a temporal-mode demultiplexing scheme that achieves the
ultimate quantum precision for the simultaneous estimation of the temporal
centroid, the time offset, and the relative intensities of an incoherent
mixture of ultrashort pulses at the single-photon level. We experimentally
resolve temporal separations ten times smaller than the pulse duration, as well
as imbalanced intensities differing by a factor of 10^2. This represents an
improvement of more than an order of magnitude over the best standard methods
based on intensity detection.

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 Dates: 2020-09-022020-09-032020-11-122021-01-04
 Publication Status: Issued
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: arXiv: 2009.01069
DOI: 10.1103/PRXQuantum.2.010301
 Degree: -

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Title: PRX Quantum 2, 010301 (2021)
Source Genre: Journal
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Pages: 8 Volume / Issue: 2 (1) Sequence Number: 010301 Start / End Page: - Identifier: -