Quantum communication link robust against photon loss
AssigneeInternational Business Machines Corporation
InventorsLev S. Bishop, Jay M. Gambetta, Hanhee Paik
Life of this patent
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Abstract
A technique relates to communication of a quantum state. Polarization hardware is configured to receive a polarization encoded qubit and split the polarization encoded qubit into two qubits. A converter is coupled to the polarization hardware, and the converter is configured to convert the two qubits into a form suitable for a CNOT gate. The CNOT gate is configured to receive the two qubits such that a measurement result of a CNOT operation of the CNOT gate determines success of the communication of the quantum state.
Claims20
A system for communication, the system comprising:
- a CNOT gate configured to receive two qubits, the CNOT gate being configured to entangle the two qubits;
- a converter coupled to the CNOT gate, the converter being configured to convert the two qubits into a form suitable for a polarization hardware;
- and
- the polarization hardware configured to receive the two qubits and combine the two qubits into a polarization encoded qubit for a communication.
A system for communication, the system comprising:
- a CNOT gate configured to receive two qubits, the CNOT gate bring configured to entangle the two qubits;
- a converter coupled to be CNOT gate, the converter being configured to convert the two qubits into a form suitable for a polarization hardware;
- and
- the polarization hardware configured to receive the two qubits and combine the two qubits into a polarization encoded qubit for a communication;
- wherein the polarization hardware includes a polarization shifter.
A communication method comprising:
- receiving two qubits;
- entangling, using a CNOT gate, the two qubits;
- converting, using a converter coupled to the CNOT gate, the two qubits into a form suitable for a polarization hardware;
- and
- combining, using the polarization hardware, the two qubits into a polarization encoded qubit for a communication;
- wherein the polarization hardware includes a polarization shifter.
Dependencies are inferred from the claim text.