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REDUCTION OF SPONTANEOUS EMISSION AND THERMAL PHOTON NOISE IN QUANTUM COMPUTING MACHINES USING A GALVANICALLY GROUNDED FILTER
REDUCTION OF SPONTANEOUS EMISSION AND THERMAL PHOTON NOISE IN QUANTUM COMPUTING MACHINES USING A GALVANICALLY GROUNDED FILTER
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机译:使用电镀接地过滤器减少量子计算机中的自发发射和热光子噪声
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摘要
Protecting qubits of a quantum processor from spontaneous emission and thermal photon noise includes connecting a first port of a filter to a signal line of a readout resonator of a qubit circuit of a quantum processor. The filter has a passband including a readout resonator frequency associated with the readout resonator and a first stopband including a qubit transition frequency associated with the qubit circuit. A second port of the filter is connected to a measurement device. a signal line of the filter is galvanically connected to a reference ground in thermal contact to a stage of a cryostat. The galvanic connection further makes a thermal connection to an input signal line of the qubit circuit.
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