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Entanglement Assisted Radars with Transmitter Side Optical Phase Conjugation and Classical Coherent Detection
This invention involves entanglement-assisted (EA) bistatic quantum radar applications. Employing optical phase conjugation (OPC) on the transmitter side and classical coherent detection on the receiver side shows that the detection probability of the proposed EA target detection scheme significantly outperforms both classical and coherent states-based...
Published: 6/28/2023
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Inventor(s): Ivan Djordjevic
Keywords(s):
Category(s): Technology Classifications > Sensors & Controls > Particle & Radiation, Technology Classifications > Engineering & Physical Sciences > Communications & Networking, Technology Classifications > Engineering & Physical Sciences > Communications & Networking > Antenna
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Entanglement Assisted Multistatic Radars
An entanglement-assisted (EA) multistatic radar that significantly outperforms corresponding EA bistatic, coherent state-based quantum, and classical radars. The proposed radar employs multiple entangled transmitters performing transmit-side optical phase conjugation, multiple coherent detection-based receivers serving as EA detectors, and a joint detector....
Published: 6/28/2023
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Inventor(s): Ivan Djordjevic
Keywords(s):
Category(s): Technology Classifications > Sensors & Controls > Particle & Radiation, Technology Classifications > Engineering & Physical Sciences > Communications & Networking
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Entanglement Assisted Joint Monostatic-Bistatic Radars
This technology is an entanglement-assisted (EA) joint monostatic-bistatic quantum radar scheme that significantly outperforms similar conventional radars. The system has two radars: one with both a wideband entangled source and an EA detector and another with only an EA detector. An optical phase conjugation (OPC) is applied on the transmitter side,...
Published: 6/23/2023
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Inventor(s): Ivan Djordjevic
Keywords(s):
Category(s): Technology Classifications > Sensors & Controls > Particle & Radiation, Technology Classifications > Engineering & Physical Sciences > Communications & Networking
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Quantum Receivers for Entanglement Assisted Communications and Sensing
Entanglement Assisted Communication (EACOMM) and quantum computing is the future for many different industries. The unique capabilities of being able to calculate some superposition of atoms between 0 and 1 is a huge asset for complex computing. While the channel capacity for EACOMM has been theoretically demonstrated, optimal quantum receivers have...
Published: 4/3/2023
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Inventor(s): Ivan Djordjevic
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Communications & Networking > Wireless, Technology Classifications > Engineering & Physical Sciences > Communications & Networking > Optical, Technology Classifications > Engineering & Physical Sciences > Photonics
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Entanglement Assisted Communication with Optical Phase Conjugation on Transmitter Side
Entanglement -Assisted (EA) Communication and Sensing has been advocated by numerous authors as a potential alternative to classical communications, in particular in noisy and low-brightness regime. This technology proposes an EA scheme employing the optical phase-conjugation (OPC) on transmitter side. It shows that the proposed EA communication system,...
Published: 8/9/2023
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Inventor(s): Ivan Djordjevic
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Quantum
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Circularly-Symmetric Companding Quantization-Inspired Hybrid Constellation Shaping for APSK Modulation to Improve Power Efficiency
This technology is an improved amplitude phase shift keying (APSK) with better constellation power efficiency in Gaussian-noise-limited channel. The improved power efficiency makes it suitable for applications in power-limited communications such as fiber-optic communications, satellite communications, power-line communications, and MIMO communications.
Background:
One...
Published: 4/3/2023
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Inventor(s): Ivan Djordjevic, Aleksandra Jovanovic, Zoran Peric, Slobodan Vlajkov
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Communications & Networking > Networking, Technology Classifications > Engineering & Physical Sciences > Communications & Networking > Wireless
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Atmospheric Turbulence-Controlled Cryptosystems
This technology is a new type of cryptosystem that leverages atmospheric turbulence to protect free-space optical communication from eavesdropping.
Background:
Free-space optical (FSO) communication, the use of light as a communication method through the air, space, or water without the use of cables, is a promising communication method, particularly...
Published: 4/3/2023
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Inventor(s): Ivan Djordjevic
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Communications & Networking > Networking, Technology Classifications > Engineering & Physical Sciences > Communications & Networking > Wireless
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Surface Codes Based Quantum Networking
This invention uses surface codes to implement an extendable quantum communication network.
Background:
Quantum communication makes use of quantum physics to create highly secure networks that are immune to many techniques used to intercept the communication while in transit. But because quantum information degrades quickly, there are limitations on...
Published: 4/3/2023
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Inventor(s): Ivan Djordjevic
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Communications & Networking
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FPGA-Based Rate-Adaptive Spatially-Coupled LDPC Codes for Optical Communications
This invention discloses a rate-adaptive forward error correction (FEC) scheme based on spatially-coupled (SC) LDPC codes derived from quasi-cyclic (QC) LDPC codes with its field programmable gate array (FPGA) architecture. FPGA emulation demonstrates that the proposed LDPC codes provide larger coding gain and smaller error floor compared to the QC-LDPC...
Published: 11/20/2023
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Inventor(s): Ivan Djordjevic, Xiaole Sun
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Communications & Networking
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Secure, Global Quantum Communications Networks
This invention proposes a quantum network of satellites in order to provide global coverage. The idea is to have terrestrial quantum networks be connected with low earth orbit satellites and have a subnetwork of medium and greater earth orbit satellites. This invention capitalizes on the security and speed of quantum networks and common satellite communications....
Published: 4/3/2023
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Inventor(s): Ivan Djordjevic
Keywords(s):
Category(s): Technology Classifications > Engineering & Physical Sciences > Communications & Networking, Technology Classifications > Engineering & Physical Sciences > Communications & Networking > Wireless
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