Electronic digital logic circuitry – Superconductor – Tunneling device
Reexamination Certificate
2007-08-07
2007-08-07
Barnie, Rexford (Department: 2819)
Electronic digital logic circuitry
Superconductor
Tunneling device
C327S186000, C327S367000, C327S528000, C365S162000
Reexamination Certificate
active
11267459
ABSTRACT:
A first qubit having a superconducting loop interrupted by a plurality of Josephson junctions is provided. Each junction interrupts a different portion of the superconducting loop and each different adjacent pair of junctions in the plurality of Josephson junctions defines a different island. An ancillary device is coupled to the first qubit. In a first example, the ancillary device is a readout mechanism respectively capacitively coupled to a first and second island in the plurality of islands of the first qubit by a first and second capacitance. Quantum nondemolition measurement of the first qubit's state may be performed. In a second example, the ancillary device is a second qubit. The second qubit's first and second islands are respectively capacitively coupled to the first and second islands of the first qubit by a capacitance. In this second example, the coupling is diagonal in the physical basis of the qubits.
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Barnie Rexford
Crawford Jason
D-Wave Systems Inc.
Seed IP Law Group PLLC
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