RT Journal Article
T1 On the Prospects of Multiport Devices for Photon-Number-Resolving Detection
A1 Teo, Yong Siah
A1 Jeong, Hyunseok
A1 Řeháček, Jaroslav
A1 Hradil, Zdeněk
A1 Sánchez Soto, Luis Lorenzo
A1 Silberhorn, Christine
AB Ideal photon-number-resolving detectors form a class of important optical components in quantum optics and quantum information theory. In this article, we theoretically investigate the potential of multiport devices having reconstruction performances approaching that of the Fock-state measurement. By recognizing that all multiport devices are minimally complete, we first provide a general analytical framework to describe the tomographic accuracy (or quality) of these devices. Next, we show that a perfect multiport device with an infinite number of output ports functions as either the Fock-state measurement when photon losses are absent or binomial mixtures of Fock-state measurements when photon losses are present and derive their respective expressions for the tomographic transfer function. This function is the scaled asymptotic mean squared error of the reconstructed photon-number distributions uniformly averaged over all distributions in the probability simplex. We then supply more general analytical formulas for the transfer function for finite numbers of output ports in both the absence and presence of photon losses. The effects of photon losses on the photon-number resolving power of both infinite- and finite-size multiport devices are also investigated.
PB MDPI
SN 2624-960X
YR 2019
FD 2019-09-25
LK https://hdl.handle.net/20.500.14352/12542
UL https://hdl.handle.net/20.500.14352/12542
LA eng
NO Ministerio de Economía y Competitividad (MINECO)
NO Ministerio de Educación de Corea del Sur/BK21 Plus Program
NO National Research Foundation of Korea (NRF)
NO Grant Agency of the Czech Republic
NO Palacký University/IGA Project
DS Docta Complutense
RD 1 ene 2026