High-dimensional quantum key distribution using orbital angular momentum of single photons from a colloidal quantum dot at room temperature
- URL: http://arxiv.org/abs/2405.03377v1
- Date: Mon, 6 May 2024 11:31:26 GMT
- Title: High-dimensional quantum key distribution using orbital angular momentum of single photons from a colloidal quantum dot at room temperature
- Authors: Dotan Halevi, Boaz Lubotzky, Kfir Sulimany, Eric G. Bowes, Jennifer A. Hollingsworth, Yaron Bromberg, Ronen Rapaport,
- Abstract summary: High-dimensional quantum key distribution (HDQKD) is a promising avenue to address the inherent limitations of basic QKD protocols.
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.
We also demonstrate experimentally secure qudit transmission exceeding one secure bit per photon, thus already beating the traditional d=2 QKD capacity.
- Score: 0.6730898405113309
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: High-dimensional quantum key distribution (HDQKD) is a promising avenue to address the inherent limitations of basic 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 demonstrate experimentally secure qudit transmission exceeding one secure bit per photon, thus already beating the traditional d=2 QKD capacity.
Related papers
- Superior decoy state and purification quantum key distribution protocols for realistic quantum-dot based single photon sources [0.35342120781147623]
We experimentally emulate two simple-to-implement protocols that allow practical, far from ideal sub-Poissonian photon sources to outperform state-of-the-art WCS.
By engineering the photon statistics of a quantum dot's biexciton-exciton cascade, we show that either a truncated decoy state protocol or a heralded purification protocol can be employed.
arXiv Detail & Related papers (2024-09-12T11:07:50Z) - Experimental single-photon quantum key distribution surpassing the fundamental coherent-state rate limit [11.795169912821704]
Single-photon sources are essential for quantum networks, enabling applications ranging from quantum key distribution (QKD) to the burgeoning quantum internet.
Here, we report high-rate QKD using a high-efficiency single-photon source, enabling an SKR transcending the fundamental rate limit of coherent light.
Our findings conclusively demonstrate the superior performance of nanotechnology-based single-photon sources over coherent light for QKD applications, marking a pivotal stride towards the realization of a global quantum internet.
arXiv Detail & Related papers (2024-06-04T07:28:15Z) - Secure quantum imaging with decoy state heralded single photons [0.0]
We study quantum secured imaging with the decoy state heralded single photon source (HSPS)
The HSPSs superior performance in low photon number regimes makes it an ideal candidate for integrating quantum key distribution protocols.
arXiv Detail & Related papers (2024-02-18T18:43:05Z) - Design and simulation of a transmon qubit chip for Axion detection [103.69390312201169]
Device based on superconducting qubits has been successfully applied in detecting few-GHz single photons via Quantum Non-Demolition measurement (QND)
In this study, we present Qub-IT's status towards the realization of its first superconducting qubit device.
arXiv Detail & Related papers (2023-10-08T17:11:42Z) - High-dimensional quantum correlation measurements with an adaptively
gated hybrid single-photon camera [58.720142291102135]
We propose an adaptively-gated hybrid intensified camera (HIC) that combines a high spatial resolution sensor and a high temporal resolution detector.
With a spatial resolution of nearly 9 megapixels and nanosecond temporal resolution, this system allows for the realization of previously infeasible quantum optics experiments.
arXiv Detail & Related papers (2023-05-25T16:59:27Z) - Quantum Key Distribution Using a Quantum Emitter in Hexagonal Boron
Nitride [48.97025221755422]
We demonstrate a room temperature, discrete-variable quantum key distribution system using a bright single photon source in hexagonal-boron nitride.
We have generated keys with one million bits length, and demonstrated a secret key of approximately 70,000 bits, at a quantum bit error rate of 6%.
Our work demonstrates the first proof of concept finite-key BB84 QKD system realised with hBN defects.
arXiv Detail & Related papers (2023-02-13T09:38:51Z) - QUICK$^3$ -- Design of a satellite-based quantum light source for
quantum communication and extended physical theory tests in space [73.86330563258117]
Single photon source can enhance secure data rates in satellite-based quantum key distribution scenarios.
payload is being integrated into a 3U CubeSat and scheduled for launch in 2024 into low Earth orbit.
arXiv Detail & Related papers (2023-01-26T15:34:11Z) - Efficient room-temperature molecular single-photon sources for quantum
key distribution [51.56795970800138]
Quantum Key Distribution (QKD) allows the distribution of cryptographic keys between multiple users in an information-theoretic secure way.
We introduce and demonstrate a proof-of-concept QKD system exploiting a molecule-based single-photon source operating at room temperature and emitting at 785nm.
arXiv Detail & Related papers (2022-02-25T11:52:10Z) - Entanglement transfer, accumulation and retrieval via quantum-walk-based
qubit-qudit dynamics [50.591267188664666]
Generation and control of quantum correlations in high-dimensional systems is a major challenge in the present landscape of quantum technologies.
We propose a protocol that is able to attain entangled states of $d$-dimensional systems through a quantum-walk-based it transfer & accumulate mechanism.
In particular, we illustrate a possible photonic implementation where the information is encoded in the orbital angular momentum and polarization degrees of freedom of single photons.
arXiv Detail & Related papers (2020-10-14T14:33:34Z) - Quantum key distribution with any two independent and identically
distributed states [0.0]
We provide a security proof of a QKD protocol where the usage of any light source is allowed as long as it emits two independent and identically distributed (i.i.d.) states.
It is remarkable that as long as the light source emits two i.i.d. states, even if we have no prior knowledge of the light source, we can securely employ it in the QKD protocol.
arXiv Detail & Related papers (2020-05-14T11:43:29Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.