Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Journal of Modern Optics

Plate beam splitters and symmetric multiports

Päivi Törmä, Igor Jex

Published Nov 1, 1996• 11 citations
Publisher

Abstract

We show that for experimental arrangements with few nonvacuum inputs the fully symmetric multiport can be replaced by a simpler partially symmetric multiport. This device is equivalent to a beam splitter arrangement where the number of necessary beam splitters increases linearly with increasing number of inputs, that is it is considerably simpler to realize owning to the smaller number of components needed.

DOI
10.1080/09500349608232894

Related papers

Quantum state transformations by multiport array beam splitters

Perez-Leija, Moya-Cessa, Szameit +1 more

Conference on Lasers and Electro-Optics•Jan 1, 2012•0 citations

Interferometry and higher-dimensional phase measurements using directionally unbiased linear optics

David S. Simon, Christopher R. Schwarze, Alexander V. Sergienko

Grover multiports are higher-dimensional generalizations of beam splitters, in which input to any one of the four ports has equal probability of exiting at any of the same four ports, including the input port. In this paper, we demonstrate that interferometers built from such multiports have novel features. For example, when combined with two-photon input and coincidence measurements, it is shown that such interferometers have capabilities beyond those of standard beam-splitter-based interferometers, such as easily controlled interpolation between Hong-Ou-Mandel (HOM) and anti-HOM behavior. Further, it is shown that the Grover-based analog of the Mach-Zehnder interferometer can make three separate phase measurements simultaneously. By arranging the transmission lines between the two multiports to lie in different planes, the same interferometer acts as a higher-dimensional Sagnac interferometer, allowing rotation rates about three different axes to be measured with a single device.

arXiv:2209.09414•Physical Review A•Sep 15, 2022•11 citations

Non-classical statistics at multiport beam splitters.

Klaus Mattle, Markus Michler, Harald Weinfurter +2 more

Applied Physics B•Jan 1, 1995•36 citations

Creation of maximally entangled photon-number states using optical fiber multiports

Geoff J. Pryde, Andrew G. White

We theoretically demonstrate a method for producing the maximally path-entangled state $(1/\sqrt{2})(|N,0〉+\mathrm{exp}[\mathrm{iN}\ensuremath{\varphi}]|0,N〉)$ using intensity-symmetric multiport beam splitters, single photon inputs, and either photon-counting postselection or conditional measurement. The use of postselection enables successful implementation with non-unit efficiency detectors. We also demonstrate how to make the same state more conveniently by replacing one of the single photon inputs by a coherent state.

arXiv:quant-ph/0304135•Physical Review A•Nov 21, 2003•91 citations

Multiport beam-splitter controlled transformations with postselection of superposition single-photon states

Y. Ben-Aryeh

Optics Communications•Mar 27, 2010•3 citations

Generating Greenberger-Horne-Zeilinger states using multiport splitters

Daniel Bhatti, Stefanie Barz

Symmetric multiport splitters are versatile tools in optical quantum information processing. They can be used for studying multiparticle scattering, for studying distinguishability and mixedness, and also for the generation of multipartite entangled quantum states. Here, we show that $N$-photon $N$-mode Greenberger-Horne-Zeilinger (GHZ) states can be generated using symmetric multiport beam splitters. Varying the input states' internal degrees of freedom and postselecting onto certain photon-number distributions allows the probabilistic generation of GHZ states with arbitrary photon numbers. We present two schemes, one for odd and one for even numbers of photons, to generate GHZ states using symmetric multiport splitters and compare them to a strategy utilizing a $2N$-port network as well as the standard postselection method.

arXiv:2302.00697•Physical Review A•Mar 30, 2023•10 citations
We show that for experimental arrangements with few nonvacuum inputs the fully symmetric multiport can be replaced by a simpler partially symmetric multiport. This device is equivalent to a beam splitter arrangement where the number of necessary beam splitters increases linearly with increasing number of inputs, that is it is considerably simpler to realize owning to the smaller number of components needed.
Grover multiports are higher-dimensional generalizations of beam splitters, in which input to any one of the four ports has equal probability of exiting at any of the same four ports, including the input port. In this paper, we demonstrate that interferometers built from such multiports have novel features. For example, when combined with two-photon input and coincidence measurements, it is shown that such interferometers have capabilities beyond those of standard beam-splitter-based interferometers, such as easily controlled interpolation between Hong-Ou-Mandel (HOM) and anti-HOM behavior. Further, it is shown that the Grover-based analog of the Mach-Zehnder interferometer can make three separate phase measurements simultaneously. By arranging the transmission lines between the two multiports to lie in different planes, the same interferometer acts as a higher-dimensional Sagnac interferometer, allowing rotation rates about three different axes to be measured with a single device.
We theoretically demonstrate a method for producing the maximally path-entangled state $(1/\sqrt{2})(|N,0〉+\mathrm{exp}[\mathrm{iN}\ensuremath{\varphi}]|0,N〉)$ using intensity-symmetric multiport beam splitters, single photon inputs, and either photon-counting postselection or conditional measurement. The use of postselection enables successful implementation with non-unit efficiency detectors. We also demonstrate how to make the same state more conveniently by replacing one of the single photon inputs by a coherent state.
Symmetric multiport splitters are versatile tools in optical quantum information processing. They can be used for studying multiparticle scattering, for studying distinguishability and mixedness, and also for the generation of multipartite entangled quantum states. Here, we show that NNN-photon NNN-mode Greenberger-Horne-Zeilinger (GHZ) states can be generated using symmetric multiport beam splitters. Varying the input states' internal degrees of freedom and postselecting onto certain photon-number distributions allows the probabilistic generation of GHZ states with arbitrary photon numbers. We present two schemes, one for odd and one for even numbers of photons, to generate GHZ states using symmetric multiport splitters and compare them to a strategy utilizing a 2N2N2N-port network as well as the standard postselection method.