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US 11,113,622 B2Granted
Phononic quantum networks of solid-state spins with alternating and frequency-selective waveguides
AssigneeUniversity of Oregon
InventorsHailin Wang, Mark C. Kuzyk
Life of this patent
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Abstract
Spin qubits are situated in mechanical resonators that are acoustically coupled with acoustic waveguides. The acoustic waveguides provide frequency dependent phonon propagation selected so that mechanical resonators adjacent to a selected mechanical resonator are acoustically coupled to the selected mechanical resonator in different acoustic frequency ranges. This configure permits directional transfer of quantum states between spins in spin-mechanical resonator and provides a scalable platform for spin-based quantum computing.
Claims27
A quantum circuit, comprising:
- at least a first spin qubit situated on a first mechanical resonator;
- and
- a first acoustic waveguide coupled to the first mechanical resonator in a first acoustic frequency range.
A quantum circuit, comprising:
- a plurality of spin-mechanical resonators (SMRs);
- a plurality of acoustic waveguides coupled to the SMRs so that each SMR is coupled to a first other SMR in a first frequency band and a second other SMR in a second frequency band that is different than the first frequency band;
- and
- a phononic crystal situated about the SMRs, wherein a bandgap of the phononic crystal includes frequencies of the first frequency band and the second frequency band.
1 more element
A method, comprising:
- selecting a first spin qubit situated on first spin-mechanical resonator (SMR) and a second spin qubit situated on a second SMR;
- providing acoustic coupling between the first SMR and the second SMR in a first acoustic frequency range;
- producing a phonon at a resonance frequency of the mechanical resonator of the second SMR, wherein the phonon frequency is in the first acoustic frequency range;
- and
- coupling the phonon to the second SMR so that a quantum state of the second spin qubit of the second SMR changes based on a quantum state of the first spin qubit of the first SMR.
2 more elements
Dependencies are inferred from the claim text.