High-dimensional quantum cryptography with twisted light
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 th...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2015-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/17/3/033033 |
| _version_ | 1827873866364485632 |
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| author | Mohammad Mirhosseini Omar S Magaña-Loaiza Malcolm N O’Sullivan Brandon Rodenburg Mehul Malik Martin P J Lavery Miles J Padgett Daniel J Gauthier Robert W Boyd |
| author_facet | Mohammad Mirhosseini Omar S Magaña-Loaiza Malcolm N O’Sullivan Brandon Rodenburg Mehul Malik Martin P J Lavery Miles J Padgett Daniel J Gauthier Robert W Boyd |
| author_sort | Mohammad Mirhosseini |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-12T16:43:12Z |
| format | Article |
| id | doaj.art-1e76eb2158fd443a9de82f8caa74b771 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:43:12Z |
| publishDate | 2015-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-1e76eb2158fd443a9de82f8caa74b7712023-08-08T14:19:39ZengIOP PublishingNew Journal of Physics1367-26302015-01-0117303303310.1088/1367-2630/17/3/033033High-dimensional quantum cryptography with twisted lightMohammad Mirhosseini0Omar S Magaña-Loaiza1Malcolm N O’Sullivan2Brandon Rodenburg3Mehul Malik4Martin P J Lavery5Miles J Padgett6Daniel J Gauthier7Robert W Boyd8The Institute of Optics, University of Rochester , Rochester, New York 14627, USAThe Institute of Optics, University of Rochester , Rochester, New York 14627, USAThe Institute of Optics, University of Rochester , Rochester, New York 14627, USAThe Institute of Optics, University of Rochester , Rochester, New York 14627, USAThe Institute of Optics, University of Rochester , Rochester, New York 14627, USA; Institute for Quantum Optics and Quantum Information (IQOQI), Austrian Academy of Sciences , Boltzmanngasse 3, A-1090 Vienna, AustriaSchool of Physics and Astronomy, University of Glasgow , Glasgow, G12 8QQ, UKSchool of Physics and Astronomy, University of Glasgow , Glasgow, G12 8QQ, UKDepartment of Physics, Duke University , Durham, NC 27708 USAThe Institute of Optics, University of Rochester , Rochester, New York 14627, USA; Department of Physics, University of Ottawa , Ottawa ON K1N 6N5, CanadaQuantum 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.https://doi.org/10.1088/1367-2630/17/3/033033quantum key distributionorbital angular momentumsingular optics03.67.Dd03.67.-a42.50.Ex |
| spellingShingle | Mohammad Mirhosseini Omar S Magaña-Loaiza Malcolm N O’Sullivan Brandon Rodenburg Mehul Malik Martin P J Lavery Miles J Padgett Daniel J Gauthier Robert W Boyd High-dimensional quantum cryptography with twisted light New Journal of Physics quantum key distribution orbital angular momentum singular optics 03.67.Dd 03.67.-a 42.50.Ex |
| title | High-dimensional quantum cryptography with twisted light |
| title_full | High-dimensional quantum cryptography with twisted light |
| title_fullStr | High-dimensional quantum cryptography with twisted light |
| title_full_unstemmed | High-dimensional quantum cryptography with twisted light |
| title_short | High-dimensional quantum cryptography with twisted light |
| title_sort | high dimensional quantum cryptography with twisted light |
| topic | quantum key distribution orbital angular momentum singular optics 03.67.Dd 03.67.-a 42.50.Ex |
| url | https://doi.org/10.1088/1367-2630/17/3/033033 |
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