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US 8,209,279 B2Granted
Measurement-only topological quantum computation
AssigneeMicrosoft Corporation
InventorsMichael Freedman, Chetan Nayak, Parsa Bonderson
Life of this patent
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Abstract
Measurement-only topological quantum computation using both projective and interferometrical measurement of topological charge is described. Various issues that would arise when realizing it in fractional quantum Hall systems are discussed.
Claims20
A method for performing measurement-only anyonic quantum computation, the method comprising:
- measuring a first quantum state associated with a fractional quantum Hall (FQH) fluid;
- measuring a first current associated with a first collective quantum state of a first collection of non-abelian anyons emergent in the FQH fluid, wherein a computation is defined at least in part by the first current measurement;
- measuring a second quantum state associated with the FQH fluid after the first current has been measured;
- and
- determining a result of the computation based on the second quantum state.
2 more elements
A method for performing measurement-only anyonic quantum computation, comprising:
- measuring a first quantum state associated with a fractional quantum Hall (FQH) fluid;
- performing a sequence of edge-current measurements, the sequence of edge-current measurements defining a computation, each said edge-current measurement being associated with a respective collection of non-abelian anyons emergent in the FQH fluid, wherein the non-abelian anyons emerge as least-energy excitations of a system of real particles on which the fractional quantum Hall effect fluid is formed;
- measuring a second quantum state associated with a fractional quantum Hall (FQH) fluid after the sequence of edge-current measurements have been performed;
- and
- determining a result of the computation based on the second quantum state.
2 more elements
A measurement-only anyonic quantum computer, the quantum computer comprising:
- means for measuring a first quantum state associated with a fractional quantum Hall (FQH) fluid;
- means for measuring a first current associated with a first collective quantum state of a first collection of non-abelian anyons emergent in the FQH fluid, wherein a computation is defined at least in part by the first current measurement;
- means for measuring a second quantum state associated with the FQH fluid after the first current has been measured;
- and
- means for determining a result of the computation based on the second quantum state.
2 more elements
Dependencies are inferred from the claim text.