Patent application number | Description | Published |
20140235450 | MULTI-TUNABLE SUPERCONDUCTING CIRCUITS - A method of characterizing a tunable superconducting circuit, includes selecting an operating direct current (DC) flux for a first charge island from a plurality of coupled charge islands residing in the tunable superconducting circuit coupled to a first resonator and a second resonator, tuning operating DC flux values for at least two charge islands from the plurality of coupled charge islands, measuring coupling energies of the first resonator and the second resonator and measuring frequencies from each of the plurality of coupled charge islands. | 08-21-2014 |
20140246652 | PLANAR QUBITS HAVING INCREASED COHERENCE TIMES - An interdigitated capacitor includes a substrate and a pair of comb-like electrodes both formed on the semiconductor substrate and horizontally arranged thereon, each of the pair of comb-like electrodes including finger electrodes having a curved profile. | 09-04-2014 |
20140264284 | FREQUENCY SEPARATION BETWEEN QUBIT AND CHIP MODE TO REDUCE PURCELL LOSS - A system, method, and chip to control Purcell loss are described. The chip includes qubits formed on a first surface of a substrate. The method includes determining frequencies of the qubits, and controlling a separation between the frequencies of the qubits and chip mode frequencies of the chip. | 09-18-2014 |
20140264285 | MULTIPLE-QUBIT WAVE-ACTIVATED CONTROLLED GATE - A device includes a housing, at least two qubits disposed in the housing and a resonator disposed in the housing and coupled to the at least two qubits, wherein the at least two qubits are maintained at a fixed frequency and are statically coupled to one another via the resonator, wherein energy levels |03> and |12> are closely aligned, wherein a tuned microwave signal applied to the qubit activates a two-qubit phase interaction. | 09-18-2014 |
20140264287 | REMOVAL OF SPURIOUS MICROWAVE MODES VIA FLIP-CHIP CROSSOVER - A coplanar waveguide device includes a coplanar waveguide structure disposed on a substrate, at least one qubit coupled to the coplanar waveguide structure and an add-on chip having a metallized trench, and disposed over the substrate. | 09-18-2014 |
20140266406 | SYMMETRIC PLACEMENT OF COMPONENTS ON A CHIP TO REDUCE CROSSTALK INDUCED BY CHIP MODES - A method and system to control crosstalk among qubits on a chip are described. The method includes placing two or more components symmetrically on the chip, the chip including the qubits, and driving two or more ports symmetrically to control the crosstalk based on controlling coupling of chip mode frequencies and qubit frequencies. | 09-18-2014 |
20140368234 | MULTIPLE-QUBIT WAVE-ACTIVATED CONTROLLED GATE - A device includes a housing, at least two qubits disposed in the housing and a resonator disposed in the housing and coupled to the at least two qubits, wherein the at least two qubits are maintained at a fixed frequency and are statically coupled to one another via the resonator, wherein energy levels |03> and |12> are closely aligned, wherein a tuned microwave signal applied to the qubit activates a two-qubit phase interaction. | 12-18-2014 |
20150325774 | FREQUENCY SEPARATION BETWEEN QUBIT AND CHIP MODE TO REDUCE PURCELL LOSS - A system, method, and chip to control Purcell loss are described. The chip includes qubits formed on a first surface of a substrate. The method includes determining frequencies of the qubits, and controlling a separation between the frequencies of the qubits and chip mode frequencies of the chip. | 11-12-2015 |