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Amplified Entanglement Assisted Communication Outperforming Classical Laser Communication in Strong Atmospheric Turbulence Regime
Contrary to the common belief that quantum entanglement is destroyed by amplification, in entanglement-assisted communication systems dominated by attenuation effects rather than noise, the signal photons can be amplified by the erbium-doped fiber amplifier (EDFA) without destroying the entanglement. The inventors developed a terrestrial free-space...
Published: 8/1/2024
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Inventor(s): Ivan Djordjevic, Vijay Nafria
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Quantum, Technology Classifications > Engineering & Physical Sciences > Communications & Networking
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Entanglement Based CV-QKD with Information Reconciliation over Entanglement Assisted Link
This invention is an entanglement-based continuous variable-quantum key distribution (CV-QKD) scheme that performs information reconciliation over the entanglement assisted communication link. The same entanglement generation source is used in both raw key transmission and information reconciliation. Experimental demonstrations over the free‐space optical...
Published: 8/1/2024
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Inventor(s): Ivan Djordjevic, Vijay Nafria
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Quantum, Technology Classifications > Engineering & Physical Sciences > Communications & Networking
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Optimized Receiver Design for Entanglement-Assisted Communication using BPSK
This technology proposes a new receiver design employing 2x2 optical hybrid receiver to optimize entanglement-assisted communication specifically using Binary Phase-Shift Keying (BPSK). This new method leverages prior work that discovered that pre-shared entanglement allowed for higher communications rates and optimizing the receiver now allows for...
Published: 8/1/2024
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Inventor(s): Rahul Bhadani, Ivan Djordjevic
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Communications & Networking, Technology Classifications > Engineering & Physical Sciences > Photonics, Technology Classifications > Engineering & Physical Sciences > Quantum
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Optimized Regular and Irregular SD-LDPC Codes for 50G-PON and Beyond
This technology is a low-density parity-check (LDPC) code optimization for optical transmission (fiber) taking into consideration known burst mode errors. By using parity-check matrix rearrangement and different intra-codeword interleaving, the inventors demonstrated that both regular and irregular LDPC codes' performance can be improved under burst...
Published: 8/1/2024
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Inventor(s): Ivan Djordjevic, Mingwei Yang, Ziwen Pan
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Communications & Networking, Technology Classifications > Engineering & Physical Sciences > Photonics, Technology Classifications > Engineering & Physical Sciences > Communications & Networking > Optical
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Two-Pumps-Based Entanglement Generation Source Enabling Entanglement-Assisted Communication over Turbulent Free-Space Optical (FSO) Channels
This technology improves Quantum Entangled Free Space Optical Communication by employing two laser pumps and modulating on the signal photons, while employing the idler photons as the reference signal. The use of two pumps gives the flexibility of generating the signal photons at arbitrary wavelength in C- and L-bands, which is not possible with the...
Published: 9/30/2024
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Inventor(s): Ivan Djordjevic, Vijay Nafria
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Photonics, Technology Classifications > Engineering & Physical Sciences > Communications & Networking, Technology Classifications > Imaging & Optics > Telecommunications, Technology Classifications > Engineering & Physical Sciences > Quantum
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Hybrid CV-DV Quantum Communications and Quantum Networks
This technology is a robust and efficient quantum network that allows for a large number of entangled states to be delivered over the nodes in the network. The network makes use of simultaneous discrete variable (DV) and continuous variable (CV) entanglement unlike existing state of the art quantum networks, making it ideal for serving as the backbone...
Published: 8/1/2024
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Inventor(s): Ivan Djordjevic
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Quantum, Technology Classifications > Engineering & Physical Sciences > Communications & Networking
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Coherent States Based Quantum Information Processing and Quantum Computing Analogs
This technology represents a step forward creating a decoherence-free optical quantum information processing and computing analog, which does not rely on the fragile quantum states but rather robust classical states. The inventors propose how to implement the universal set of quantum gates classical analogs in integrated optics by employing classical...
Published: 8/1/2024
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Inventor(s): Ivan Djordjevic, Vijay Nafria
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Photonics, Technology Classifications > Engineering & Physical Sciences > Quantum
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Wavelength Diversity based Low Probability to Intercept (LPI) Free-Space Optical Communications in Strong Turbulence Regime
This technology uses an encoded broadband source on two different center wavelengths on different balanced detectors simultaneously to provide low probability for intercept communications for Free Space Optical communications and defense applications. Experimental results demonstrated success using wavelength diversity together with LDPC coded modulation...
Published: 8/13/2024
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Inventor(s): Ivan Djordjevic, Vijay Nafria
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Communications & Networking > Optical, Technology Classifications > Engineering & Physical Sciences > Communications & Networking, Technology Classifications > Engineering & Physical Sciences > Photonics
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Entanglement Assisted Sensing and Radars with the Phase-Conjugation on Idler Photons
This innovation is a concept suitable for various quantum sensing and radar applications. The proposed entanglement generation source and optical-phase conjugation modules are of low-cost and easy to integrate in photonic integrated circuit (PIC) technology. These quantum sensing modules and architectures are suitable for use in entanglement assisted...
Published: 8/1/2024
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Inventor(s): Ivan Djordjevic, Vijay Nafria
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Communications & Networking, Technology Classifications > Engineering & Physical Sciences > Photonics, Technology Classifications > Engineering & Physical Sciences > Quantum
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Incoherent Light Sources-Based Low Probability of Detection and Covert Radars over Atmospheric Turbulence Channels
This technology is a low probability of detection (LPD) /covert radar concept that employs incoherent, broadband light sources. The main idea is to hide the radar signal in solar radiation while employing constant amplitude modulation schemes at high-speed to detect the presence of the target via cross-correlation method.
The technology has been tested...
Published: 8/1/2024
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Inventor(s): Ivan Djordjevic, Vijay Nafria
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Communications & Networking, Technology Classifications > Engineering & Physical Sciences > Photonics
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