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

Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)

A Controllable Source of High-dimensional Entagled Photon Pairs

Jano Gil-López, Vahid Ansari, Christine Silberhorn, Benjamin Brecht

Published Jun 21, 2021• 0 citations
Publisher

Abstract

In quantum communications applications, information can, in principle, be encoded with an alphabet that goes beyond 0 and 1. It can be shown that a higher dimensional alphabet provides greater information capacity and improved security [1] . Temporal modes (TMs) provide such a high-dimensional alphabet and form an appealing framework for quantum information science [2] . Additionally, as opposed to transverse spatial or orbital angular momentum modes, TMs are compatible with spatially single-mode systems.

DOI
10.1109/cleo/europe-eqec52157.2021.9542187

Related papers

Single-Photon and Quantum Entangled Photon-Pair Sources for Quantum Information Communications

Ikuo Suemune, H. Kumano, Hirotaka Sasakura

Kogaku/Kōgaku•Sep 10, 2011•0 citations

High-dimensional quantum cryptography with twisted light

Mohammad Mirhosseini, Omar S Magaña-Loaiza, Malcolm N O’Sullivan +6 more

Quantum key distribution (QKD) systems often rely on polarization of light for encoding, thus limiting the amount of information that can be sent per photon and placing tight bounds on the error rates that such a system can tolerate. Here we describe a proof-of-principle experiment that indicates the feasibility of high-dimensional QKD based on the transverse structure of the light field allowing for the transfer of more than 1 bit per photon. Our implementation uses the orbital angular momentum (OAM) of photons and the corresponding mutually unbiased basis of angular position (ANG). Our experiment uses a digital micro-mirror device for the rapid generation of OAM and ANG modes at 4 kHz, and a mode sorter capable of sorting single photons based on their OAM and ANG content with a separation efficiency of 93%. Through the use of a seven-dimensional alphabet encoded in the OAM and ANG bases, we achieve a channel capacity of 2.05 bits per sifted photon. Our experiment demonstrates that, in addition to having an increased information capacity, multilevel QKD systems based on spatial-mode encoding can be more resilient against intercept-resend eavesdropping attacks.

arXiv:1402.7113•New Journal of Physics•Mar 20, 2015•657 citations

High-Capacity Quantum Secure Direct Communication with Single Photons in Both Polarization and Spatial-Mode Degrees of Freedom

Dan Liu, Jialiang Chen, Wei Jiang

International Journal of Theoretical Physics•May 2, 2012•101 citations

High-dimensional quantum cryptography with twisted light

Mohammad Mirhosseini, Omar S. Magaña‐Loaiza, Malcolm N. O’Sullivan +6 more

Quantum key distribution (QKD) systems often rely on polarization of light for encoding, thus limiting the amount of information that can be sent per photon and placing tight bounds on the error rates that such a system can tolerate. Here we describe a proof-of-principle experiment that indicates the feasibility of high-dimensional QKD based on the transverse structure of the light field allowing for the transfer of more than 1 bit per photon. Our implementation uses the orbital angular momentum (OAM) of photons and the corresponding mutually unbiased basis of angular position (ANG). Our experiment uses a digital micro-mirror device for the rapid generation of OAM and ANG modes at 4 kHz, and a mode sorter capable of sorting single photons based on their OAM and ANG content with a separation efficiency of 93%. Through the use of a seven-dimensional alphabet encoded in the OAM and ANG bases, we achieve a channel capacity of 2.05 bits per sifted photon. Our experiment demonstrates that, in addition to having an increased information capacity, multilevel QKD systems based on spatial-mode encoding can be more resilient against intercept-resend eavesdropping attacks.

Civil War Book Review•Mar 20, 2015•314 citations

Tailored generation, manipulation, and application of photonic temporal modes

Benjamin Brecht, Jano Gil-López, Markus Allgaier +3 more

Pulsed temporal modes form a high-dimensional basis for quantum information applications. By controlling these modes, we can tailor quantum states and measurements for applications such as quantum state tomography or quantum metrology.

Conference on Lasers and Electro-Optics•Jan 1, 2019•0 citations

Quantum information science with temporal modes

Benjamin Brecht, Dileep V. Reddy, Christine Silberhorn +1 more

Quantum information science (QIS) offers ways to process information that are not realizable with classical information technology. Today, many QIS applications are based on photons, which can carry information in different degrees of freedom: polarization, transverse spatial mode and frequency. Although polarization is the most widely used basis, it is intrinsically restricted to two dimensions which ultimately limits its potential for QIS. Transverse spatial modes on the other hand have received a lot of attention when the orbital angular momentum (OAM) states of photons have been recognized as suitable basis states for high-dimensional QIS. However, since information is encoded into spatial field modes, OAM states are inherently incompatible with integrated network architectures based on single-mode fibers and thus of limited use for practical applications.

European Quantum Electronics Conference (EQEC)•Jun 21, 2015•0 citations
In quantum communications applications, information can, in principle, be encoded with an alphabet that goes beyond 0 and 1. It can be shown that a higher dimensional alphabet provides greater information capacity and improved security [1] . Temporal modes (TMs) provide such a high-dimensional alphabet and form an appealing framework for quantum information science [2] . Additionally, as opposed to transverse spatial or orbital angular momentum modes, TMs are compatible with spatially single-mode systems.
Quantum key distribution (QKD) systems often rely on polarization of light for encoding, thus limiting the amount of information that can be sent per photon and placing tight bounds on the error rates that such a system can tolerate. Here we describe a proof-of-principle experiment that indicates the feasibility of high-dimensional QKD based on the transverse structure of the light field allowing for the transfer of more than 1 bit per photon. Our implementation uses the orbital angular momentum (OAM) of photons and the corresponding mutually unbiased basis of angular position (ANG). Our experiment uses a digital micro-mirror device for the rapid generation of OAM and ANG modes at 4 kHz, and a mode sorter capable of sorting single photons based on their OAM and ANG content with a separation efficiency of 93%. Through the use of a seven-dimensional alphabet encoded in the OAM and ANG bases, we achieve a channel capacity of 2.05 bits per sifted photon. Our experiment demonstrates that, in addition to having an increased information capacity, multilevel QKD systems based on spatial-mode encoding can be more resilient against intercept-resend eavesdropping attacks.
Quantum key distribution (QKD) systems often rely on polarization of light for encoding, thus limiting the amount of information that can be sent per photon and placing tight bounds on the error rates that such a system can tolerate. Here we describe a proof-of-principle experiment that indicates the feasibility of high-dimensional QKD based on the transverse structure of the light field allowing for the transfer of more than 1 bit per photon. Our implementation uses the orbital angular momentum (OAM) of photons and the corresponding mutually unbiased basis of angular position (ANG). Our experiment uses a digital micro-mirror device for the rapid generation of OAM and ANG modes at 4 kHz, and a mode sorter capable of sorting single photons based on their OAM and ANG content with a separation efficiency of 93%. Through the use of a seven-dimensional alphabet encoded in the OAM and ANG bases, we achieve a channel capacity of 2.05 bits per sifted photon. Our experiment demonstrates that, in addition to having an increased information capacity, multilevel QKD systems based on spatial-mode encoding can be more resilient against intercept-resend eavesdropping attacks.
Quantum information science (QIS) offers ways to process information that are not realizable with classical information technology. Today, many QIS applications are based on photons, which can carry information in different degrees of freedom: polarization, transverse spatial mode and frequency. Although polarization is the most widely used basis, it is intrinsically restricted to two dimensions which ultimately limits its potential for QIS. Transverse spatial modes on the other hand have received a lot of attention when the orbital angular momentum (OAM) states of photons have been recognized as suitable basis states for high-dimensional QIS. However, since information is encoded into spatial field modes, OAM states are inherently incompatible with integrated network architectures based on single-mode fibers and thus of limited use for practical applications.