Patents by Inventor Dmitry Kronberg
Dmitry Kronberg has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 12149615Abstract: A system and method for determining a secret cryptographic key shared between a sending unit and a receiving unit by using a communication channel comprising spatially separated amplifiers for secure long-distance communication includes transmitting a sequence of electromagnetic pulses via the communication channel through the amplifiers for establishing a shared secret cryptographic key, wherein each electromagnetic pulse corresponds to a bit of a random bit sequence according to a ciphering protocol, and at least one ciphering parameter is determined by maximizing the expected key generation rate using an information theory model, wherein a measured signal loss and at least one amplification parameter are taken into account as input parameters to the information theory model.Type: GrantFiled: February 18, 2022Date of Patent: November 19, 2024Assignee: Terra Quantum AGInventors: Nikita Kirsanov, Nurbolat Kenbayev, Dmitry Kronberg, Valerii Vinokour, Gordey Lesovik, Pavel Sekatski, Asel Sagingalieva
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Patent number: 11882212Abstract: A system method for quantum key includes providing an initial key in a first data processing device and a second data processing device; providing, in the second data processing device, a quantum signal comprising a plurality of quantum states; determining, in the second data processing device, a plurality of quantum measurement parameters, a raw signal by quantum measuring the plurality of quantum states employing the plurality of quantum measurement parameters; generating with the initial key, in the second data processing device, an encrypted signal; determining, in at least one of the first data processing device and the second data processing device, a reconciled signal from the encrypted signal; determining, in at least one of the first data processing device and the second data processing device, a shared key from the reconciled signal by correcting the first reconciled signal.Type: GrantFiled: January 27, 2022Date of Patent: January 23, 2024Assignee: Terra Quantum AGInventor: Dmitry Kronberg
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Patent number: 11818258Abstract: A system and method for quantum key distribution includes determining an intrinsic loss along a quantum channel; generating a pulse sequence; transmitting the pulse sequence via the quantum channel; receiving the pulse sequence; determining invalid signal positions and providing the invalid signal positions; determining a first reconciled signal from the first signal and the invalid signal positions, and determining a second reconciled signal from the second signal and the invalid signal positions; determining a total loss along the quantum channel from the at least one test pulse received, determining a signal loss from the total loss and the intrinsic loss, and providing the signal loss; determining a shared by error correcting the first reconciled signal and the second reconciled signal; and determining an amplified key from the shared key by shortening the shared key by a shortening amount that is determined from the signal loss.Type: GrantFiled: February 18, 2022Date of Patent: November 14, 2023Assignee: Terra Quantum AGInventors: Gordey Lesovik, Dmitry Kronberg, Alexey Kodukhov, Valeria Pastushenko, Nurbolat Kenbayev, Nikita Kirsanov, Pavel Sekatski, Valerii Vinokour, Asel Sagingalieva
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Publication number: 20220278834Abstract: A system and method for determining a secret cryptographic key shared between a sending unit and a receiving unit by using a communication channel comprising spatially separated amplifiers for secure long-distance communication includes transmitting a sequence of electromagnetic pulses via the communication channel through the amplifiers for establishing a shared secret cryptographic key, wherein each electromagnetic pulse corresponds to a bit of a random bit sequence according to a ciphering protocol, and at least one ciphering parameter is determined by maximizing the expected key generation rate using an information theory model, wherein a measured signal loss and at least one amplification parameter are taken into account as input parameters to the information theory model.Type: ApplicationFiled: February 18, 2022Publication date: September 1, 2022Applicant: Terra Quantum AGInventors: Nikita KIRSANOV, Nurbolat KENBAEV, Dmitry KRONBERG, Valerii VINOKUR, Gordey LESOVIK, Pavel SEKATSKI, Asel SAGINGALIEVA
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Publication number: 20220271928Abstract: A system and method for quantum key distribution includes determining an intrinsic loss along a quantum channel; generating a pulse sequence; transmitting the pulse sequence via the quantum channel; receiving the pulse sequence; determining invalid signal positions and providing the invalid signal positions; determining a first reconciled signal from the first signal and the invalid signal positions, and determining a second reconciled signal from the second signal and the invalid signal positions; determining a total loss along the quantum channel from the at least one test pulse received, determining a signal loss from the total loss and the intrinsic loss, and providing the signal loss; determining a shared by error correcting the first reconciled signal and the second reconciled signal; and determining an amplified key from the shared key by shortening the shared key by a shortening amount that is determined from the signal loss.Type: ApplicationFiled: February 18, 2022Publication date: August 25, 2022Applicant: Terra Quantum AGInventors: Gordey LESOVIK, Dmitry KRONBERG, Alexey KODUKHOV, Valeria PASTUSHENKO, Nurbolat KENBAEV, Nikita KIRSANOV, Pavel SEKATSKI, Valerii VINOKUR, Asel SAGINGALIEVA
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Publication number: 20220247558Abstract: A system method for quantum key includes providing an initial key in a first data processing device and a second data processing device; providing, in the second data processing device, a quantum signal comprising a plurality of quantum states; determining, in the second data processing device, a plurality of quantum measurement parameters, a raw signal by quantum measuring the plurality of quantum states employing the plurality of quantum measurement parameters; generating with the initial key, in the second data processing device, an encrypted signal; determining, in at least one of the first data processing device and the second data processing device, a reconciled signal from the encrypted signal; determining, in at least one of the first data processing device and the second data processing device, a shared key from the reconciled signal by correcting the first reconciled signal.Type: ApplicationFiled: January 27, 2022Publication date: August 4, 2022Applicant: Terra Quantum AGInventor: Dmitry Kronberg