Use of topological charge measurements to change between different qubit encodings
AssigneeMicrosoft Corporation
InventorParsa Bonderson
Life of this patent
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Abstract
A method for changing qubit encoding for implementation of a quantum computational gate is disclosed. Such a method may include providing first and second qubits encoded in a plurality of non-abelian anyons according to a first encoding scheme. The first encoding scheme may not be suitable for implementing a certain topologically protected quantum computational gate, such as an entangling gate, for example. Successive topological charge measurements may be performed on at least a subset of the anyons until the qubits are encoded according to a second encoding scheme. The second encoding scheme may be different from the first encoding scheme, and may be suitable for implementing the gate.
Claims20
A method for implementing a quantum computational gate, the method comprising:
- encoding first and second qubits in accordance with a first encoding scheme that utilizes a first cardinal number of a plurality of non-abelian quasiparticles;
- changing, via performance of at least one topological charge measurement, the encoding of the first and second qubits to a second encoding scheme that utilizes a second cardinal number of the plurality of non-abelian quasiparticles, wherein the first and the second cardinal numbers are different;
- and
- implementing a quantum computational gate with the qubits after the encoding is changed.
A method for changing qubit encoding for implementation of a quantum computational gate, the method comprising:
- providing first and second qubits, wherein the first and second qubits are encoded in a first cardinal number of non-abelian quasiparticles of a plurality of non-abelian quasiparticles according to a first encoding scheme;
- and
- performing successive topological charge measurements on at least a subset of the plurality of non-abelian quasiparticles until the first and second qubits are encoded in a second cardinal number of non-abelian quasiparticles of the plurality of non-abelian quasiparticles according to a second encoding scheme that is different from the first encoding scheme, wherein the first and second cardinal numbers are different.
A method for implementing a quantum computational gate, the method comprising:
- providing first and second qubits, wherein each of the first and second qubits is encoded in a respective set of four non-abelian quasiparticles disposed in a fractional quantum Hall fluid;
- performing successive topological charge measurements on at least a subset of the non-abelian quasiparticles until the first and second qubits are encoded in a set of six non-abelian quasiparticles;
- and
- implementing a quantum computational gate while the first and second qubits are encoded in the set of six non-abelian quasiparticles.
Dependencies are inferred from the claim text.