Remote quantum state transfer for qubits with different frequencies
| DWPI Title: Quantum communication system, has quantum communication mediator system for receiving first quantum signal that includes first frequency from first quantum transceiver and outputting second quantum signal to second transceiver |
| Abstract: A quantum communication system includes a first quantum transceiver, a second quantum transceiver, and a quantum communication mediator (QCM) system. The transceivers have different resonant frequencies or physical systems. The QCM system receives an initial quantum signal from the first quantum transceiver. The QCM system transfers a quantum state of the initial quantum signal to a first mechanical signal and then from the first mechanical signal to a first pair of optical signals by way of a first three-wave mixing process. The QCM transfers the quantum state to a second pair of optical signals from the first pair by way of a four-wave mixing process. The QCM transfers the quantum state from the second pair of optical signals to a second mechanical signal by way of a second three-wave mixing process. The QCM transfers the quantum state from the second mechanical signal to a final quantum signal by mechanical transduction. |
| Use: System for mediating quantum communications, such as a quantum computing, remote quantum communication, a quantum measurement, a hybrid quantum-memory, quantum-processor networking system, distributed quantum information processing system. |
| Advantage: The loss of quantum information can be mitigated by the use of error correction, any loss of the quantum information degrades the performance of the system, for instance by reducing the data rate of quantum transfer. The quantum states can be transferred between the quantum transceivers with different resonant frequencies without losing quantum information. The QCM system can be configured to generate and read quantum states in a quantum system having a quantum particle frequency that is different from that of the first quantum transceiver, so that the quantum state transfer system can transfer quantum states between systems that have different quantum particle frequencies in a reliable manner. |
| Novelty: The quantum communications system (200) has a first quantum transceiver (201) and a second quantum transceiver (203) that is resonant at respective frequencies. A quantum communication mediator (QCM) system receives a quantum signal that has one frequency from one of the transceiver. The signal has a qubit encoded on the signal. The QCM system outputs an an another quantum signal having another frequency to the other transceiver. A mechanical transducer (214) receives the former quantum signal that exhibits a stimulated mechanical vibration having the former frequency. A four-wave-mixing resonator receives a stimulated optical signal and two pumping signals from a pumping laser (216). |
| Filed: 12/3/2020 |
| Application Number: US17110477A |
| Tech ID: SD 15256.0 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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