Control and readout of a superconducting qubit using a photonic link

Abstract

Delivering on the revolutionary promise of a universal quantum computer will require processors with millions of quantum bits (qubits). In superconducting quantum processors, each qubit is individually addressed with microwave signal lines that connect room temperature electronics to the cryogenic environment of the quantum circuit. The complexity and heat load associated with the multiple coaxial lines per qubit limits the possible size of a processor to a few thousand qubits. Here we introduce a photonic link employing an optical fiber to guide modulated laser light from room temperature to a cryogenic photodetector, capable of delivering shot-noise limited microwave signals directly at millikelvin temperatures. By demonstrating high-fidelity control and readout of a superconducting qubit, we show that this photonic link can meet the stringent requirements of superconducting quantum information processing. Leveraging the low thermal conductivity and large intrinsic bandwidth of optical fiber enables efficient and massively multiplexed delivery of coherent microwave control pulses, providing a path towards a million-qubit universal quantum computer.

References in corpus (12)

• Supplementary information for "Quantum supremacy using a programmable superconducting processor"
• Charge insensitive qubit design derived from the Cooper pair box
• Surface codes: Towards practical large-scale quantum computation
• Controlling the spontaneous emission of a superconducting transmon qubit
• AC-Stark Shift and Dephasing of a Superconducting Qubit Strongly Coupled to a Cavity Field
• Qubit-photon interactions in a cavity: Measurement induced dephasing and number splitting
• Black-box superconducting circuit quantization
• Quantum trajectory approach to circuit QED: Quantum jumps and the Zeno effect
• Microwave Quantum Link between Superconducting Circuits Housed in Spatially Separated Cryogenic Systems
• Nonreciprocal microwave signal processing with a Field-Programmable Josephson Amplifier
• Flexible Coaxial Ribbon Cable for High-Density Superconducting Microwave Device Arrays
• Readout of Superconducting Nanowire Single Photon Detectors through Forward Biased Optical Modulators

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