Systems and methods for quantum coherence preservation of qubits
AssigneeAnametric, Inc.
InventorsWilliam V. Oxford, Mitchell A. Thornton, Duncan L. MacFarlane, Timothy P. LaFave, Jr.
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Abstract
Embodiments of feedback-based quantum circuits are described. Embodiments of such quantum circuits may be externally controlled using only basis or eigenstate (classically-observable) signals without triggering de-coherence. Additionally, embodiments of such quantum circuits allow the internal (superpositioned) quantum state information to be preserved over long periods of time and present options for quantum error-correction due to the basis-state controls. Moreover, a coupling of two such feedback-based quantum circuits allows for quantum-channel-based information exchange to a variety of ends.
Claims15
A quantum circuit, comprising:
- a first Bell state oscillator (BSO), including:
- a first Bell state generator, comprising a first Hadamard gate and a first CNOT gate, the first Hadamard gate having an input and an output and the first CNOT gate having an input and an output;
- a second Bell state generator, comprising a second Hadamard gate and a second CNOT gate, the second Hadamard gate having an input and an output and the second CNOT gate having an input and an output, wherein the input of the second Hadamard gate is coupled to the output of the first Hadamard gate of the first Bell state generator and the input of the second CNOT gate is coupled to the output of the first CNOT gate of the first Bell state generator;
- a third Bell state generator, comprising a third Hadamard gate and a third CNOT gate, the third Hadamard gate having an input and an output and the third CNOT gate having an input and an output, wherein the input of the third Hadamard gate is coupled to the output of the second Hadamard gate of the second Bell state generator and the input of the third CNOT gate is coupled to the output of the second CNOT gate of the second Bell state generator;
- and
- a fourth Bell state generator, comprising a fourth Hadamard gate and a fourth CNOT gate, the fourth Hadamard gate having an input and an output and the fourth CNOT gate having an input and an output, wherein the input of the fourth Hadamard gate is coupled to the output of the third Hadamard gate of the third Bell state generator and the input of the fourth CNOT gate is coupled to the output of the third CNOT gate of the third Bell state generator, and wherein the input of the first Hadamard gate of the first Bell state generator is coupled to the output of the fourth Hadamard gate of the fourth Bell state generator and the input of the first CNOT gate of the first Bell state generator is coupled to the output of the fourth CNOT gate of the fourth Bell state generator.
Dependencies are inferred from the claim text.