RT Journal Article
T1 Achieving the ultimate quantum timing resolution
A1 Ansari, Vahid
A1 Brecht, Benjamin
A1 Gil López, Jano
A1 Donohue, John M.
A1 Řeháček, Jaroslav
A1 Zdeněk, Hradil
A1 Sánchez Soto, Luis Lorenzo
A1 Silberhorn, Christine
AB Accurate time-delay measurement is at the core of many modern technologies. 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 10 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.
PB American Physical Society
SN 2691-3399
YR 2021
FD 2021-01-04
LK https://hdl.handle.net/20.500.14352/8422
UL https://hdl.handle.net/20.500.14352/8422
LA eng
NO © Published by the American Physical Society.We acknowledge financial support from the European Union’s Horizon 2020 research and innovation program (Project ApresSF), the Deutsche Forschungsgemeinschaft (Grant No. 231447078–TRR 142), the Grant Agency ofthe Czech Republic (Grant No. 18-04291S), the Spanish Ministerio de Ciencia e Innovación (Grant No. PGC2018-099183-B-I00), and the Q-FARM Bloch Fellowship.
NO Unión Europea. H2020
NO Ministerio de Ciencia e Innovación (MICINN)
NO Deutsche Forschungsgemeinschaf
NO Grant Agency of the Czech Republic
DS Docta Complutense
RD 31 dic 2025