DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: High-dimensional quantum key distribution using orbital angular momentum of single photons from a colloidal quantum dot at room temperature

Journal Article · · Optica Quantum

High-dimensional quantum key distribution (HDQKD) is a promising avenue to address the inherent limitations of basic quantum key distribution (QKD) protocols. However, experimental realizations of HDQKD to date have relied on indeterministic photon sources that limit the achievable key rate. In this paper, we demonstrate a full emulation of a HDQKD system using a single colloidal giant quantum dot (gQD) as a deterministic, compact, and room-temperature single-photon source (SPS). We demonstrate a practical protocol by encoding information in a high-dimensional space (d = 3) of the orbital angular momentum of the photons. Our experimental configuration incorporates two spatial light modulators for encoding and decoding the spatial information carried by individual photons. Our experimental demonstration establishes the feasibility of utilizing high radiative quantum yield gQDs as practical SPSs for HDQKD. We also experimentally demonstrate surpassing the traditional d = 2 QKD capacity with comparable error rates, indicating a significant improvement in performance while maintaining reliability.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
89233218CNA000001
OSTI ID:
2481563
Report Number(s):
LA-UR--24-30557
Journal Information:
Optica Quantum, Journal Name: Optica Quantum Journal Issue: 5 Vol. 2; ISSN 2837-6714
Publisher:
Optica Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

References (68)

Role of Interface Chemistry in Opening New Radiative Pathways in InP/CdSe Giant Quantum Dots with Blinking‐Suppressed Two‐Color Emission journal June 2019
The Role of Liquid Ink Transport in the Direct Placement of Quantum Dot Emitters onto Sub-Micrometer Antennas by Dip-Pen Nanolithography journal June 2018
Room-Temperature Fiber-Coupled Single-Photon Sources based on Colloidal Quantum Dots and SiV Centers in Back-Excited Nanoantennas journal January 2024
PbS/CdS Quantum Dot Room-Temperature Single-Emitter Spectroscopy Reaches the Telecom O and S Bands via an Engineered Stability journal December 2020
Overcoming the Rate-Directionality Trade-off: A Room-Temperature Ultrabright Quantum Light Source journal October 2021
Photophysics of Thermally-Assisted Photobleaching in “Giant” Quantum Dots Revealed in Single Nanocrystals journal April 2018
Purification of Single Photons by Temporal Heralding of Quantum Dot Sources journal January 2019
New Insights into the Complexities of Shell Growth and the Strong Influence of Particle Volume in Nonblinking “Giant” Core/Shell Nanocrystal Quantum Dots journal May 2012
“Giant” Multishell CdSe Nanocrystal Quantum Dots with Suppressed Blinking journal April 2008
Twisted photons: new quantum perspectives in high dimensions journal October 2017
Satellite-to-ground quantum key distribution journal August 2017
Efficient separation of the orbital angular momentum eigenstates of light journal November 2013
High-dimensional quantum key distribution based on multicore fiber using silicon photonic integrated circuits journal June 2017
Path-encoded high-dimensional quantum communication over a 2-km multicore fiber journal April 2021
Quantum key distribution session with 16-dimensional photonic states journal July 2013
Fast and simple one-way quantum key distribution journal November 2005
Energy-time entanglement-based dispersive optics quantum key distribution over optical fibers of 20 km journal April 2019
Single photon sources with near unity collection efficiencies by deterministic placement of quantum dots in nanoantennas journal March 2021
Quantum structured light in high dimensions journal May 2023
Quantum cryptography with structured photons journal March 2024
Photon-efficient quantum key distribution using time–energy entanglement with high-dimensional encoding journal February 2015
High-dimensional quantum cryptography with twisted light journal March 2015
Quantum key distribution with realistic states: photon-number statistics in the photon-number splitting attack journal July 2002
Large-alphabet quantum key distribution using spatially encoded light journal December 2019
Full-field mode sorter using two optimized phase transformations for high-dimensional quantum cryptography journal January 2020
High-dimensional quantum key distribution using energy-time entanglement over 242 km partially deployed fiber journal October 2023
Large-alphabet time-bin quantum key distribution and Einstein–Podolsky–Rosen steering via dispersive optics journal December 2023
Experimental Space-Division Multiplexed Polarization-Entanglement Distribution through 12 Paths of a Multicore Fiber journal December 2021
Coherent-pulse implementations of quantum cryptography protocols resistant to photon-number-splitting attacks journal January 2004
Security proof for quantum key distribution using qudit systems journal September 2010
High-dimensional quantum key distribution using dispersive optics journal June 2013
Higher-dimensional orbital-angular-momentum-based quantum key distribution with mutually unbiased bases journal September 2013
Entanglement-based quantum communication secured by nonlocal dispersion cancellation journal December 2014
Orbital Angular Momentum States Enabling Fiber-based High-dimensional Quantum Communication journal June 2019
Efficient Time-Bin Encoding for Practical High-Dimensional Quantum Key Distribution journal July 2020
Achieving Ultimate Noise Tolerance in Quantum Communication journal February 2021
Processing Entangled Photons in High Dimensions with a Programmable Light Converter journal July 2022
Hyperentangled Time-Bin and Polarization Quantum Key Distribution journal October 2022
Free-Space Quantum Key Distribution by Rotation-Invariant Twisted Photons journal August 2014
High-Dimensional Two-Photon Interference Effects in Spatial Modes journal March 2021
Pathways for Entanglement-Based Quantum Communication in the Face of High Noise journal September 2021
Optimal Eavesdropping in Quantum Cryptography with Six States journal October 1998
Quantum Cryptography with 3-State Systems journal October 2000
Security of Quantum Key Distribution Using d -Level Systems journal March 2002
Quantum Cryptography Protocols Robust against Photon Number Splitting Attacks for Weak Laser Pulse Implementations journal February 2004
Beating the Photon-Number-Splitting Attack in Practical Quantum Cryptography journal June 2005
Decoy State Quantum Key Distribution journal June 2005
Quantum Key Distribution with Higher-Order Alphabets Using Spatially Encoded Qudits journal March 2006
Large-Alphabet Quantum Key Distribution Using Energy-Time Entangled Bipartite States journal February 2007
Scalable implementation of (d+1) mutually unbiased bases for d -dimensional quantum key distribution journal October 2022
Nonlocal Temporal Interferometry for Highly Resilient Free-Space Quantum Communication journal April 2023
High-dimensional quantum cloning and applications to quantum hacking journal February 2017
Provably secure and high-rate quantum key distribution with time-bin qudits journal November 2017
Direct generation of spatially entangled qudits using quantum nonlinear optical holography journal February 2023
Multiscale architecture for fast optical addressing and control of large-scale qubit arrays journal April 2023
Orbital angular momentum: origins, behavior and applications journal January 2011
Limitations to the determination of a Laguerre–Gauss spectrum via projective, phase-flattening measurement journal April 2014
High-dimensional cryptography with spatial modes of light: tutorial journal September 2020
Refractive elements for the measurement of the orbital angular momentum of a single photon journal January 2012
Using all transverse degrees of freedom in quantum communications based on a generic mode sorter journal March 2019
Large-alphabet encoding for higher-rate quantum key distribution journal January 2019
Miniature wide-spectrum mode sorter for vortex beams produced by 3D laser printing journal June 2017
High-dimensional intracity quantum cryptography with structured photons journal January 2017
Experimental investigation of high-dimensional quantum key distribution protocols with twisted photons journal December 2018
High-dimensional Encoding in the Round-Robin Differential-Phase-Shift Protocol journal December 2023
High-dimensional coherent one-way quantum key distribution preprint January 2021
High-dimensional quantum key distribution using a multi-plane light converter preprint January 2024
Ultrafast and highly collimated radially polarized photons from a colloidal quantum dot in a hybrid nanoantenna at room-temperature preprint January 2024

Similar Records

Scalable high-rate, high-dimensional time-bin encoding quantum key distribution
Journal Article · 2019 · Quantum Science and Technology · OSTI ID:1526373

Quantum key distribution with dual detectors
Journal Article · 2007 · Physical Review. A · OSTI ID:20982473

Trustworthiness of detectors in quantum key distribution with untrusted detectors
Journal Article · 2015 · Physical Review A - Atomic, Molecular, and Optical Physics · OSTI ID:1185855