Quantum device, quantum computing device, and quantum computing method
AssigneeFujitsu Limited
InventorsToshiki Iwai, Yoshiyasu Doi, Kenichi Kawaguchi, Tetsuya Miyatake, Tetsuro Ishiguro, Shintaro Sato
Life of this patent
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Abstract
A quantum device includes: three first optical waveguides to which a quantum bit is coupled; a second optical waveguide; a beam splitter; a first optical switch that is provided to each of the three first optical waveguides and conducts switching between optical connection and disconnection between the first optical waveguide and the second optical waveguide; and a second optical switch that conducts switching between optical connection and disconnection between the second optical waveguide and the beam splitter.
Claims12
A quantum device comprising:
- three first optical waveguides to which a quantum bit is coupled;
- a second optical waveguide;
- a beam splitter;
- a first optical switch that is provided to each of the three first optical waveguides and conducts switching between optical connection and disconnection between the first optical waveguide and the second optical waveguide;
- and
- a second optical switch that conducts switching between optical connection and disconnection between the second optical waveguide and the beam splitter.
A quantum computing method that uses a quantum device, wherein
- the quantum device includes:
- three first optical waveguides to which quantum bits that include a diamond color center are coupled;
- a second optical waveguide;
- a beam splitter;
- a first optical switch that is provided to each of the three first optical waveguides and conducts switching between optical connection and disconnection between the first optical waveguide and the second optical waveguide;
- and
- a second optical switch that conducts switching between optical connection and disconnection between the second optical waveguide and the beam splitter,
- the quantum computing method comprising:
- controlling the first optical switch to optically couple two of the first optical waveguides with the second optical waveguide;
- controlling the second optical switch to optically couple a portion of the second optical waveguide between the two of the first optical waveguides with the beam splitter;
- and
- simultaneously irradiating two of the quantum bits coupled to the two of the first optical waveguides with light.
Dependencies are inferred from the claim text.