Quantum Devices with Left-Handed Ring Resonators

Simple SummaryContent extracted from patent full text and abstract with AI.

This patent describes a quantum device that uses a left-handed metamaterial ring resonator to connect multiple qubits (quantum bits). The novel feature is the use of the left-handed ring resonator to mediate interactions between pairs of qubits, allowing fast and tunable entanglement (a key requirement for quantum computing). The dense multimode spectrum of the resonator enables large variations in the coupling (interaction) strength between qubits with only small adjustments, thus supporting high-speed, high-fidelity quantum gates.

Use CasesContent extracted from patent full text and abstract with AI.

• Quantum computing chips where fast, tunable two-qubit entangling gates are needed.
• Quantum simulation platforms to model complex systems using controlled qubit interactions.
• Quantum metrology applications requiring rapid and precise generation of qubit entanglement.
• Quantum sensing devices that benefit from fast, controllable qubit entanglement for sensitivity enhancement.
• Quantum acoustic devices for information processing or sensing at the quantum level.

BenefitsContent extracted from patent full text and abstract with AI.

• Enables fast, high-fidelity two-qubit entangling gates, improving quantum computation speed and reliability.
• Offers highly tunable interaction strengths between qubits by exploiting the dense, multimode spectrum of the ring resonator.
• Reduces the footprint compared to traditional large transmission line resonators, supporting more compact quantum chips.
• Allows selective entanglement of different pairs of qubits without affecting others, supporting scalable architectures.
• Supports operation with various types of superconducting qubits, increasing the versatility of the design.
• Requires only small changes in qubit frequency to dramatically alter interaction strength, increasing operational agility.

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Patent Abstract

A quantum device, i.e., a two-qubit entangling gate, and a related method, are presented. The quantum device includes a first qubit, a second qubit, and a ring resonator with left-handed wave dispersion. The ring resonator is coupled to the first and second qubits. In one embodiment, a quantum device includes a plurality of qubits and a ring resonator with left-handed wave dispersion. The plurality of qubits may include 2, 3, 4, 5 or more qubits positioned around the ring resonator. The ring resonator is coupled to a first pair of the qubits, e.g., a first and second qubit. In such a case, the ring resonator has a dense multi-mode spectrum near the qubit frequencies, allowing for large variations in the interaction strength between the qubits. Such a configuration enables a two-qubit entangling gate that entangles the coupled pair of qubits.